114 JOHN HAMILTON, M. D. 



Island, B. C. ; Ohio and Kentucky, Z)ur?/; Washington Territoi-y, 



Casey; "Middle and Western States; not rare," LeConte. N. S. 

 50 ; Casey, 14. Europe. Numerous places in west Siberia. Hey- 



den, 78. 



166. S. juno Fab. 



This species extends across the northern part of the continent from 

 Vermont to Vancouver Island, but is not recorded southward from 

 New York. Europe. Arctic, east and west Siberia. Casey, 25; 

 Heyden, 77. 



167. S. pumilio Er., atomarius Casey. 



The synonymy in this and the species of Stenas that follow charged 

 to Mr. Casey is due to Mr. A. Fauvel, to Mr. F. Blanchard (T. xiii, 

 p. xiii), " Cambridge, Mass. ; Detroit, Mich.," Casey. Europe, Ger- 

 many. Siberia. Kurejka. Heyden, 78. 



168. S. nanus Steph.. pusio Casey. 



" Massachusetts ; Canada ; Lake Superior," Casey. Europe. 

 Arctic and eastern Siberia. Heyden, 78 ; Casey, 82. 



169. S. humilis Er., mammops Casey. 



This species extends across the continent from Massachusetts to 

 British Columbia and southward through the Rocky Mountains to 

 New Mexico. Europe generally. Arctic and Middle Siberia in the 

 basin of the Jenisei ; Ainurland, Ca.sey, 98; Heyden, 78. Hevden, 



1885. 



170. S. canaliculatus GylL 



Massachusetts, Lake Superior, Canada. Europe in general. W. 

 Siberia along the Irtysch and Jenisei. Casey, 115 ; Heyden, 78. 



171. S. cong-ener Maehl. 



European authorities place this as a synonym of canaliculatus, 

 but Mr. Casey says they are "very distinct " Casey, 114. It occurs 

 in Alaska and Siberia. If Mr. Casey's opinion is confirmed it may 

 pei-haps lead to a moditication of the European and Asiatic distri- 

 bution given under cau.allculatvs. 



172. S. morio Grav.. suhgrisens Casey, "^lenodis Casey.] 



California, British Columbia, Casey, 128; Alamedo, Garland and 

 Veta Pass, Col., at 9200 feet, Schwarz. Europe. Ai-etic Siberia 

 (the Jenisei and Obi). Heyden, 78; Amurland, Hevden, 1885. 



