194 MICHIGAN SURVEY, 1908. ■ 



Jersey ; Mich. ; Iowa ; AVisconsin ; Missouri ; Dakota ; Wyoming ; Colo- 

 rado; New Mexico; Calif.; Brit. Columbia; possibly Siberia and No. 

 Europe. Hamilton, '94a, p. 355. 



15. HarpalKS megacephalus Lee. "In rock crevices and under debris 

 from bearberry on the jack pine ridge (1, 2) on July 13 (G. 72)."^ 

 Gleason. 



Geographic Range. Lake Superior; Isle Eoyale, Michigan. 



Haliplidae. 



16. Haliplus ruficollis DeG. A. "At the bottom of small pools in 

 the partially drained sphagnum bog near Conglomerate Bay (I, 6) on 

 July 18 (G. 116), and at the bottom of a small stream flowing from 

 a tamarack swamp near Siskowit Bay (V, 5) on August 12 (G. 230). 

 In each case the water was shallow and the bottom composed of 

 sphagnum covered with dead leaves." Gleason. 



Geographic Range. Canada; Hudson Bay region; Mt. Washington; 

 New Hampshire ; Vermont ; New York ; New Jersey ; Mich. ; W. Penna. ; 

 Ohio; 111. (Wolcott) ; Iowa; Colo.; New Mexico; Texas; Wyoming; 

 Kansas; "Western Siberia; Europe; Turkestan. Hamilton, '94a, p. 355. 



i Dtytiscidae. 



17. Hydroporus tristis Payk. A. "In the bottom of small streams 

 draining a tamarack swamp (V, 5), (G. 237)." Gleason. 



Geographic Range. Ottawa, Ontario; Vermont; Mass.; Mich.; Lake 

 Superior region ; Hudson Bay ; Colorado ; British Columbia ; Alaska ; 

 Arctic Siberia; Northern Europe to Finland. Hamilton, '94, pp. 13, 

 '94a, 357. Sharp, '82, p. 472. 



18. Hydroporus modestus Aube. A. Taken at Benson Brook clear- 

 ing (II, 1) on July 29 (A. 81). 



Geographic Range. Ottawa, Ontario; Mt. Washington, N. H. ; Mass.; 

 W. Penna.; New Jersey; Dist. Columbia; "Carolina"; "Wis.; Mich.; 

 Ohio (Dury). Sharp, '82, p. 480. 



19. Ilyiiiis pleuriticus Lee. A. "In the water near the shore at 

 camp on Siskowit Bay (V, 1) on August 7 (G. 213).'! Gleason. 



Geographic Range. Penna.; New York; Isle Eoyale, Mich.; Bayfield, 

 Wis.; Iowa; Colorado. 



20. Agabus stridulator Sharp. A. Taken in a clearing (II, 1) on 

 July 29 (A. 81). 



Geographic Range. Isle Kovale, Mich.; Hudson Bay; Canada. 

 Sharp, '82, p. 509. 



21. Agahus congener Payk. A. "In the bottom of streamlets drain- 

 ing a tamarack swamp (V, 5), (G. 237)." Gleason. 



Geographic Range. Greenland; Labrador; Hudson Bay; White 

 Mountains N. h! ; Mass. ; Penna. ; Mich. ; Missouri ; Arctic and Western 

 Siberia; Central and Northern Europe. Hamilton, '94a, p. 358. Sharp, 

 '82, p. 513. 



22. Scutopterus hornii Cr. A. "In small pools in the tamarack and 

 arbor vitae swamp (1, 4) on July 2S. These pools were under fallen 

 logs and at the bases of trees; seldom more than 1.5 dm. in depth and 

 with a bottom of sphagnum and vegetable debris (G. 181, 182)." 

 Gleason. 



