convex. Lithopsis fimbriata.-A tolerably well-preserved specimen, with its reverse (Nos. 4185, 4189), together with the fragment of a wing (No. 143o,) are the basis for this species. The vertex between the eyes is more than twice the width of the eyes, and is marked by a slight, median, longitudinal carina; the front of the vertex is nearly straight, does not protrude beyond the eyes, but is retracted next them, making it very broadly The thorax is considerably broader than the head, but the condition of the specimens does not allow a more definite statement. The tegmina are the best-preserved remains of the animal, being perfect, although somewhat obscure, partly from the veins of the underlying wings; they are more than two and a half times longer than broad, the costal margin, especially its basal half, moderately curved, the commissural margin almost perfectly straight, the apex slightly and obliquely truncate, so as to throw its well-rounded apex below the middle; near its extremity the margino-costal field occupies more than a third of the breadth of the tegmina, being double its width near the base; the first branching of the inner ulnar vein is as far from the apex of the tegmina as the second branching is from the base; and the third branching, where, and where only, the longitudinal veins are united by crossnervures, is midway between the second branching and the apex; close to the apical margin there is an inconspicuous fourth series of furcations. Length of body 9mm, of tegmina 9.75mm; breadth of the same in the middle 3.65mm, next the third branching of the longitudinal veins 3.25" ORTHOPTERA. GRYLLIDES. Nemobius tertiarius.-Two specimens (Nos. 18, 20) represent the hind femora (and No. 18 also the hind tibia and a femur and tibia of the front leg) of a small cricket. The insect must have been rather smaller than our common N. vittatus (Harr.), its hind femur being 7mm long, broad and stout, especially near the base, where it measures 2.1mm; its upper half is covered with exceedingly delicate, recumbent hairs, directed backward; there are also a few hairs upon the slender hind tibia, which is broken just where it begins to enlarge, showing signs of the upper spines; this portion is about three-fourths the length of the femur. The front femur and tibia, which are each only 2.25mm long, also indicate a small species and one that is unusually free from spines, no hairs even being discernible on this front leg. LOCUSTARIÆ. The only other remains of Orthoptera noticed in the Green River shales is a tibia and fragment of the attached femur (No. 2) of what is apparently the middle leg of a Locustarian about the size of a Phyllopteru. NEUROPTERA. ODONATA. (LIBELLULINA.) Fragments of an abdomen in obverse and reverse (Nos. 4175, 4176) are probably to be referred to a species of Libellulina, but they are insufficient to give further determination. They evidently represent four or five of the terminal segments of the body, there being first three segments of equal breadth and a similar length, a little longer than broad, with a slight median carina; and then three others without a median carina and with continually decreasing length, the first of them (probably the eighth segment) half as long as the preceding, but of the same width; the next half as long as the one which precedes it, but narrower, and the last still narrower (but imperfect). Length of the fragment 20mm, of its third (seventh? abdominal) segment 4.5mm; breadth of same 3.5. (AGRIONINA.) Dysagrion Fredericii Scudd., Bull. U. S. Geol. and Geogr. Surv. Terr. 4, 534-537.-This has already been sufficiently mentioned in the paper cited. Podagrion abortivum.-A second species of Agrionina, at first sight very different from the preceding, proves to belong to the same legion (Podagrion); and, so far as its meagre representation by the specimen (No. 4169) goes, to the genus Podagrion proper, agreeing with it in the character of the pterostigma and the supplementary sectors. The specimen represents the apical part of a wing with fragments of the middle portion. The pterostigma is a little more than twice as long as broad, and although less oblique on the inner than on the outer side, yet lies at an angle of forty-five degrees with the costal edge, and is therefore more oblique than usual in Podagrion; its outer side is arcuate as well as very oblique, but in its entire extent the pterostigma scarcely surmounts two cellules; the outer side is much thicker than the inner, and thickens below as it passes gradually into the lower border, which, like the costal, is much thickened, and appears the more so from being independent of, although in conjunction with, the median nervure. Beyond the pterostigma, the ultranodal approaches the principal nervure very closely, so that they are only half as far apart at the margin as below the pterostigma; there are two supplementary sectors, one between the ultranodal and the nodal, arising below the outer half of the pterostigma, the other between the nodal and subnodal, arising slightly further back; both of these supplementary sectors are straight, but the nodal is slightly undulated after the origin of the supplementary sectors; all the other veins, excepting the extreme tip of the principal, are straight, and the reticulation tetragonal. The wing appears to be hyaline throughout, the pterostigma very slightly infumated, the nervures fusco-castaneous, those about the pterostigma deepening nearly to black. Apically the wing is well rounded, its apex falling in the middle and not at all produced. A species is indicated of about the size of P. macropus Sel. Length of pterostigma along costal edge 1.5mm, of same from inner lower angle to outer upper angle 2.1mm; breadth of pterostigma 0.65mm, of wing in middle of apical half 5.5m mm ARACHNIDA. Nos. 3, 4, 4199, 4200, represent legs of the same or allied species of spider of about the size of Epeira riparia Hentz; femora and tibiæ and the sides of the tarsi are abundantly supplied with longitudinal rows of fine, long, black spines, the claw double. No. 36 preserves the spines alone of the same sort of leg. Length of femora 7mm, of tibiæ 7.75mm, of tarsi 3.25, of claw 0.3mm, of spines 0.75m No. 63 shows the hairy, subfusiform, ovate body of a spider ap parently a little smaller than the above. Length of abdomen 4.5mm; breadth of same 1.8mm. No. 4201 is the egg-cocoon of a spider, and is of exactly the same size, shape, and general appearance as those from British Columbia, which I have described under the name of Aranea columbiæ, excepting that, from a break in the stone, there is no trace of a pedicel. Length of egg-cocoon 5mm; breadth 4mm. MYRIAPODA. Iulus telluster.—A single Myriapod (No. 154") found by Mr. Richardson in the Green River bed is so fragmentary that it can only be referred to Iulus in a broad generic sense. The piece is composed of ten or twelve segments, probably from near the middle of the body, lying in a straight line and crushed, with no trace of any appendages. The segments appear to be composed of a short anterior and a larger posterior division, each independently and very slighly arched; the posterior division is about twice as long as the anterior, and each is transversely regularly and very finely striate parallel to the anterior and posterior margins of the segments. The foramina can be detected on some of the segments, and by their aid the width of the body can be more accurately determined. As crushed, the body is 2.3mm broad, but its probable true width is 1.5mm, while the segments are each about 0.8mm long; the fragment preserved measures 8.5mm long. ART. XXXIII.-REPORT ON THE COLLECTION OF FISHES MADE BY DR. ELLIOTT COUES U. S. A. IN DAKOTA AND MONTANA DURING THE SEASONS OF 1873 AND 1874. BY DAVID S. JORDAN, M. D. [The fishes worked up by Professor Jordan in the present communication represent probably about two-thirds of the collection made during my connection with the United States Northern Boundary Commission, the remainder of the specimens having been lost or mislaid. I am informed, however, that the series submitted to Professor Jordan contains some novelties, rarities, and other specimens of sufficient interest to render publication desirable. I have incorporated a few collector's field-notes with the author's manuscript. The fishes taken in 1873 were secured in the waters of the Red and Mouse Rivers and some of their affluents; those secured in 1874 are from watersheds entirely different both from the last named and from each other, being partly taken from the Milk River and its northern tributaries, and partly from the Saint Mary's River, Chief Mountain Lake, and other headwaters of the Saskatchewan. For articles on other portions of my collections see this Bulletin, this Vol., No. 1, pp. 259–292; No. 2, pp. 481–518; No. 3, pp. 545–661; No. 4, pp. 801–830.—Ed.] By some accident, the exact record of the localities of some of the smaller fishes has been lost or confused, and some of the specimens collected by Dr. Coues have failed to reach the writer, having probably been distributed through the general collection of the National Museum. I therefore add the field record of Dr. Coues, from which the general field of collection can be ascertained. Collector's Memorandum. 1000. Catfish. Red River, near Pembina, Dakota. May 30, 1873. 1076. Pike [Esox lucius]. Near Turtle Mountain, Dakota. Aug. 10, 1873. 1084. Lot of small fish. Mouse River, Dakota. Ang. 17, 1873. 1100. Shovel-nosed Sturgeon [Scaphirhynchops platyrhynchus]. Fort Buford, Dakota. June 12, 1874. 1103-4-5. Catfish [Ichthælurus punctatus]. Big Muddy River. June 20, 1874. 1109-10. Lot of small fish [Hyodon chrysopsis]. Quaking Ash River. June 26, 1874. 1139. Sucker [Catostomus teres]. Two Forks Milk River. July 15, 1874. 1140. Cyprinoid. Two Forks Milk River. July 15, 1874. July 29, 1874. 1143. Sucker [Catostomus teres]. Two Forks Milk River. July 17, 1874. 1175. "Gristle-nosed Fish" [Polyodon folium?]. Saint Mary's River. Aug. 16, 1874. 1176. Pike [Esox lucius]. Saint Mary's River. Aug. 16, 1874. Aug. 18, 1874. 1178. Lake Trout [ Cristivomer namaycush]. Chief Mountain Lake. 1179. Whitefish [Coregonus quadrilateralis]. Chief Mountain Lake. Aug. 18, 1874. 1182. Whitefish [Coregonus couesi]. Chief Mountain Lake. Aug. 18, 1874. 1189. Head of 18-lb. Salmon [ Salmo stomias]. Chief Mountain Lake. Aug. 24, 1874. 1192. Sucker [Catostomus teres]. Chief Mountain Lake. Aug. 28, 1874. Family ACIPENSERIDÆ. Genus SCAPHIRHYNCHOPS Gill. 1.—SCAPHIRHYNCHOPS PLATYRHYNCHUS (Raf.) Gill. 1820-Acipenser platorhynchus RAF., Ich. Oh. p. 80 Acipenser platorhynchus KIRTLAND, Rept. Zool. Ohio, 1838, 196. Scaphirhynchus platyrhynchus JORDAN, Man. Vert. 1876, 312, and of American Scaphirhynchops platyrhynchus GILL, 1867? (in a catalogue of fishes of the Missouri region; the reference not at hand. (Name only.) Scaphirhynchops platyrhynchus COPE & YARROW, Zool. Lieut. Wheeler's Expl. W. Scaphirhynchops platyrhynchus JORDAN & COPELAND, Check List Fishes, 1876, 161. Scaphirhynchops platyrhynchus JORDAN, Man. Vert. ed. 2d, 346, 1878. 1834-Acipenser cataphractus GRAY, Proc. Zool. Soc. London, 122. Scaphirhynchus cataphractus GÜNTHER, Cat. Fishes Brit. Mus. viii, 345, 1870. 1835—Scaphirhynchus rafinesquii HECKEL, Ann. Wiener Mus. Naturg. i, 71. Scaphirhynchus rafinesquii HECKEL, Ann. Wien. Mus. Naturg. i, 72, pl. viii. Dr. Coues writes me that he obtained a fine specimen of this species at Fort Buford, Dakota. I have not seen it, however. This species seems to be abundant in all the large streams between the Alleghanies and the Rio Grande. West of the Rio Grande Basin, it has not yet been noted. The "Gristle-nosed Fish" from Saint Mary's River, recorded by Dr. Coues, is perhaps Polyodon folium Lac. I have not seen the specimen referred to. Family SILURIDÆ. Genus ICHTHÆLURUS Rafinesque. 2.—ICHTHÆLUrus punctatus (Raf.) Jor. Channel Cat. White Cat. Lady Cat. 1818-Silurus punctatus RAF., Amer. Monthly Mag. and Critical Review, Sept. 359. Ictalurus punctatus JORDAN (1876), Bull. Buff. Soc. Nat. Hist. 95. |