Proceedings of the United States National MuseumU.S. Government Printing Office, 1892 - 16 pages |
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Results 1-5 of 81
Page 17
... usually have a wide distribution , and , conversely , genera of wide distribution usually have many species . A comparison of Lists II , III , IV , and XVI on the one hand , with Lists VII , VIII , IX , etc. , and even VI , on the other ...
... usually have a wide distribution , and , conversely , genera of wide distribution usually have many species . A comparison of Lists II , III , IV , and XVI on the one hand , with Lists VII , VIII , IX , etc. , and even VI , on the other ...
Page 17
... usually have species of restricted distribution . The variability of species of wide distribution has already been men- tioned . We shall now take up the zoogeography more in detail . Too great stress must not be placed on our present ...
... usually have species of restricted distribution . The variability of species of wide distribution has already been men- tioned . We shall now take up the zoogeography more in detail . Too great stress must not be placed on our present ...
Page 18
... usually have a wide distribution , and , conversely , genera of wide distribution usually have many species . A comparison of Lists II , JII , IV , and XVI on the one hand , with Lists VII , VIII , IX , etc. , and even VI , on the other ...
... usually have a wide distribution , and , conversely , genera of wide distribution usually have many species . A comparison of Lists II , JII , IV , and XVI on the one hand , with Lists VII , VIII , IX , etc. , and even VI , on the other ...
Page 19
... usually have species of restricted distribution . The variability of species of wide distribution has already been men- tioned . We shall now take up the zoögeography more in detail . Too great stress must not be placed on our present ...
... usually have species of restricted distribution . The variability of species of wide distribution has already been men- tioned . We shall now take up the zoögeography more in detail . Too great stress must not be placed on our present ...
Page 102
... usually attached , and which is so abundant on the west coast in California and the other Pacific States , and which frequently attains a large size , is really a maximum aspect of Gould's lepida , and is specially noticeable for the ...
... usually attached , and which is so abundant on the west coast in California and the other Pacific States , and which frequently attains a large size , is really a maximum aspect of Gould's lepida , and is specially noticeable for the ...
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Common terms and phrases
Acad Amazon America anal Annelid antenn¿ Basal line bird blackish Bleeker brown California Cape Charles Cape San Lucas Castelnau caudal clasper Claviform coast collection Cope Costa Rica dark darker discal distinct dorsal dusky eggs Eigenm fuscous geminate genera genus Gill gray ground color Guaymas Guiana Günther harpes Heckel hind Jordan & Gilbert Kner Lacépède length lunules maculation male Mamestra Manta Marañon marked Mazatlan median lines median space millimetres nest oblique Orbicular ordinary spots outer margin pale paler Panama Panopeus Payta Phila Plata posterior powdery Proc reniform Rio Negro River s. t. line s. t. space scales shade shell snout Solimoens somites species specimens spine Steind Steindachner Surinam t. p. line thorax concolorous tooth U. S. Fish U. S. Nat U. S. National Museum ventral VERRILL vertebr¿ whitish whorls wings
Popular passages
Page 303 - List of shells collected on the west coast of South America, principally between latitudes 7° 30' S. and 8° 49
Page 594 - ... third and more largely by the fourth ; loreal, small, quadrangular, longer than high ; oculars, 1-2 anterior short, covered above by superciliary ; postoculars resting on fourth labial ; fifth and sixth labials equal, as high as long ; parietals, large, long ; frontal, longer than wide ; prefrontals, transverse. Internasals partly separated by rostral, which is not very prominent. Inferior labials six; first pair meeting; fourth largest. Postgeneials extremely short. Temporals little larger than...
Page 116 - degenerate," as shown by the reduction of their skeleton. At the same time they are also most decidedly "eel-like," and in some respects, as in coloration, dentition, muscular development, most highly specialized. It is evident that the presence of numerous vertebral joints is essential to the suppleness of body which is the eel's chief source of power. So far as known, the numbers of vertebrae in eels range from 115 to 160, some of the deep-sea eels having probably higher numbers, if we can draw...
Page 407 - During his three years' sojourn in that quarter he managed to infuse into one and all with whom he had any intercourse more or less of his own ardent, zealous, and indefatigable spirit as a collector." Reaching the Canadian border by way of Chicago and Lake Superior, Kennicott left Fort William, on the north shore of Lake Superior at the mouth of...
Page 419 - Bay, and one containing 6 eggs was situated near the beach on a sloping knoll. It was composed of a quantity of hay, down, and feathers intermixed, and this was the general mode of structure of the nests of both swans. It usually lays from 4 to 6 eggs, judging from the noted contents of a received total of 24 nests.
Page 106 - The influence of cold, darkness, monotony, and restriction is to limit the direct struggle for existence, and therefore to limit the resultant changes. In general the external conditions most favorable to fish life are to be found in the tropical seas, among rocks and along the coral reefs near the shore. Here is the center of competition. From conditions otherwise favorable to be found in arctic regions, the majority of competitors are excluded by their inability to bear the cold. In the tropics...
Page 161 - Jenkins, yellowish; five quadrate spots of darker extending from dorsal to a line drawn from middle of eye to lower base of caudal, the anterior one above tip of pectoral; median line of side with a more or less distinct series of small spots; a short dark vertical line behind the eye; a dark blotch in front of origin of dorsal fin and another on humeral region...
Page 607 - Brush Plains of Long Island" (1842, 38). Ditmars (1896, 13) says he has not heard of one being found in Long Island or the vicinity of New York in the last five years. Baird (1854, 21) says "it is quite maritime in its northern distribution, being rarely found in the northern states except near the coast.
Page 602 - Dorsal spots or saddles (red) open at the side, the borders of adjacent spots forming pairs of black rings. Interspaces between red saddles open below ; scales not black-tipped ; front more or less black ; first black ring on nape only : O. d.
Page 385 - ... little cabins, or shelters, flat-roofed, dirt-covered, and closed in on three sides by wattled flags, canes, and slender branches ; while the front was protected by a hedge like those of the fields, only taller, placed a few feet before the house, and between which and the house burned smoky little fires. The houses were always nestled down among the thick willows bordering the river, or perched on some convenient shelf, under the shadows of the western precipice. In several places, within some...