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TRIGONOTYLUS, Fieb. 20. Trigonotylus ruficornis,

Miris ruficornis, FALLEN, Hemipt. Suec. vol. i, p. 133.

Trigonotylus ruficornis, FIEBER, Europ. Hemipt. p. 243. From Pembina, June 29 and July 1.

MIRIS, Fieber. 21. Miris instabilis.

Miris instabilis, UHLER, Hayden's Survey, Bulletin, vol. ii, pt. v, p. 50. Obtained in the vicinity of Pembina, July 1.

LOPIDEA, Uhler. 22. Lopidea media.

Capsus medius, SAY, Heteropt. p. 22, No. 11. Found near Pembina in the vicinity of Mouse River, August 29, and in the Milk River region.

LYGUS, Hahn. 23. Lygus invitus.

Capsus invitus, Say, Heteropt. p. 24, No. 21. . Captured near Pembina, June 19, and near Turtle Mount, July 24.

As this species inhabits the blossoms of the wild grapes in the Atlantic region and Mississippi Valley, does it not occur on some other plant in that northern region from which it has now been brought? 24. Lygus lineolaris.

Capsus lineolaris, PALISOT-BEAUV. Ins. Afr. et Amér. p. 187, pl. xi, fig: 7. Inbabits Pembina ; Turtle Mount, July 22; Mouse River region, August 29; and Milk River region.

25. Lygus lineatus.

Lygæus lineatus, FAB. Entom. Syst. Suppl. p. 541, No. 324; Syst. Rhyng. p. 234,

No. 152. Capsus 4-vitattus, Say, Heteropt. p. 20, No. 5. Appears to be common in many parts of the Northwest, on tbe eastern side of the Rocky Mountains. The present specimens were collected near Pembina, July 1 to 15. 26. Lygus dislocatus.

Capsus dislocatus, Say, Heteropt. p. 21, No. 6. One specimen of the red variety was obtained at Pembina, June 29.

CALOCORIS, Fieb. 27. Calocaris rapidus.

Capsus rapidus, Say, Heteropt. p. 20, No. 4.
Collected in the vicinity of Turtle Mount, July 24.

RESTHENIA, Amyot & Serv.

28. Resthenia insignis.

Capsus insignis, Say, Heteropt. p. 22, No. 12. From Turtle Mount, July 24.


29. Pæciloscytus unifasciatus.

Lygæus unifasciatus, FAB. Entom. Syst. vol. iv, p. 187, No. 153.

Pæciloscytus unifasciatus, Fieb. Eur. Hem. p. 276, No. 1. A common European species, which extends eastwardly through Northern Asia, and on the western side of North America is found from Alaska, the Yukon River, and Mackenzie River regions as far south as the Red River of Minnesota.

The specimens in this collection were procured near Pembina in June.


30. Stiphrosoma stygica.

Capsus stygicus, Say, Heteropt. p. 24, No. 18. Found at Pembina, June 14.

In Maryland, it occurs near the beaches in the tide-water districts and" on the sea-coast, living upon the twigs and leaves of Baccharis halimifolia. It would be interesting to know if this neat shrub affects saline sands in the Northwest and West, in places which may have been the margins of salt lakes and beaches of ancient ocean estuaries. This is . a most adroit little insect, dodging with rapidity behind the stem or leat the moment it is approached; but, if hard-pressed, it drops to the ground, generally into the grass, and then prepares to fly off to the next bush of its native shrub.

MALACOCORIS, FIEB. 31. Malacocoris irroratus.

Capsus irroratus, SAY, Heteropt. p. 25, No. 23.
From Pembina, June 19 and July 1, and Turtle Mount, July 24.


PAYMATA, Lat. 32. Phymata erosa.

Cimex erosus, LINN. Syst. Nat. ed. 12, vol. ii, p. 718, No. 19.

Phymata erosa, AMYOT & Serv. Hémipt. p. 290, No. 2. Obtained near Pembina in June, and near Mouse River, August 29.


CORISCUS, Schrank. 33. Coriscus subcoleoptratus.

Nabicula subcoleoptrata, KIRBY, Fauna Bor.-Amer. vol. iv, p. 282.
Nubis subcoleoptratus, REUTER, Öfversigt Vetensk. Akad. Förhandl. 1872, p. 81,

No. 1.
From Pembina, July; from Turtle Mount, July 24; and from Milk
River region.

34. Coriscus ferus.

Cimex ferus, LINN. Fauna Suecicæ, p. 256, No. 962.

Nabis ferus, FIEB. Eur. Hémipt. p. 161, No. 9.. Inhabits'Pembina; was collected June 19; near Mouse River, August 29; and Milk River region.

Subfamily REDUVIINA.

SINEA, Amyot & Serv. 35. Sinea diadema.

Reduvius diadema, FAB. Gen. Ing. p. 302; Ent. Syst. iv, p. 206, No. 46.

Sinea multispinosa, AMYOT & SERV. Hémipt. p. 375, No. 1. Obtained at Pembina and at Turtle Mount, July 24. It is distributed over a large part of North America, from Mexico into Canada, and throughout the Atlantic region.


APIOMERUS, Hahn.. 36. Apiomerus ventralis.

Reduvius ventralis, Say, Heteropt. p. 31, No. 2. One specimen from the vicinity of Pembina.


LIMNOTRECHUS, Stål. 37. Limnotrechus marginatus.

Gerris marginatus, Say, Heteropt. p. 36, No. 2. Inhabits the Milk River region, and is quite common in the Atlantic district in most of its areas.

LIMNOPORUS, Stål. 38. Limnoporus rufoscutellatus.

Gerris rufoscutellata, Lat. Gen. Ins. iii, p. 134, No. 2.-SCHUMMEL, Ploteres, bab.

3, figs. 1, 2. Occurs at Pembina, on the pools and ponds.


NOTONECTA, Linn. 39. Notonecta insulata.

Notonecta insulata, KIRBY, Fauna Bor.-Amer. iv, p. 285, No. 399. Collected in the Milk River region.

40. Notonecta undulata.

Notonecta undulata, SAY, Heteropt. p. 39, No. 1, Also collected in the Milk River region.


CORISA, Geoff. 41. Corisa sutilis.

Corica sutilis, UHLER, Bulletin of U. S. Geog. Survey of the Territories, vol. ii,

No.5, p. 73, No. 1. Inhabits standing water in the Milk River region. 42. Corisa interrupta.

Corixa interrupta, SAY, Journ. Acad. Philad. vol. iv, p. 328, No. 1. Obtained in the vicinity of the Milk River, Montana. 43. Corisa vulnerata.

Corica vulnerata, UHLER, Proc. Acad. Nat. Sci. Philad. 1861, p. 284. Also from the Milk River region.


CERESA, Fairm. 44. Ceresa bubalus.

Membracis bubalus, FAB. Ent. Syst. vol. iv, p. 14. From Pembina, from the Milk River region, and from near Mouse River.

45. Ceresa diceros.

Membracis diceros, SAY, Long's Exped. Appendix, p. 299. From the Mouse River region, August 17.


46. Stictocephala inermis. .

Membracis inermis, FAB. Ent. Syst. vol. iv, No. 15. Found near Pembina, at Turtle Mount, July 24, and near Mouse River, August 17–29.

THELIA, Amyot & Serv. 47. Thelia univittata.

Membracis univitlata, HARRIS, Ins. Injur. to Veg. p. 221. From Turtle Mount, July 23 and 24.


SCOLOPS, Germ. 48. Scolops sulcipes.

Fulgorų sulcipes, SAY, Journ. Acad. Philad. vol. iv, p. 335. From Mouse River region, August 17–29.

LIBURNIA, Stål. 49. Liburnia vittatifrons.

Liburnia vittatifrons, UHLER, Hayden's U. S. Geol. Surv. of the Territ. Bulle

tins, vol. ii, No. 5, p. 85. Collected on the plains of Montana.


APHROPHORA, Germ. 50. Aphrophora quadrinotata.

Aphrophora quadrinotata, SAY, Journ. Acad. Philad. vol. vi, p. 304, No. 2. Obtained at Turtle Mount, July 24.

POILÆNUS, Stål. 51. Philænus lineatus.

Cicada lineata, Linn. Syst. Nat. (ed. 12), p. 709, No. 31. Collected near Pembina, June 19–29; Turtle Mount, July 23; and in the vicinity of Milk River.


PROCONIA, St. Farg. & Serv. 52. Proconia costalis.

Tettigonia costalis, FAB. Ent. Syst. Suppl. 516, Nos. 22–23. - Obtained at Pembina, June 29; at Turtle Mount, July 24; and near Mouse River, August 17–29.

TETTIGONIA, Geoff. 53. Tettigoria hieroglyphica.

Tettigonia hieroglyphica, SAY, Journ. Acad. Philad. vol. vi, p. 313, No. 6. Inhabits Pembina, found on June 19, and at Turtle Mount, July 24.

GYPONA, Germ. 54. Gypoma octo!imeata.

Tettigonia otolimeata, SAY, Journ. Acad. Philad. vol. iv, p. 340, No. 1. Collected from the vicinity of Mouse River, August 17–29.

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