XortJi A)iicr}c((n Species of ] iiaptoinns. 183 



D. sajigid liens Forbes is very common tliroiigliout central 

 and southern Illinois, and lias been recorded from New York, 

 Wisconsin, Minnesota, and Alabama. 



D. stagiiaVis Forbes is also a common species, and is re- 

 corded from Minnesota, Illinois, Ohio, Kentucky, and Ala- 

 bama. 



/>. sJioshoiie Forbes has never been found outside of Yellow- 

 stone Park. 



D. paUuUis Herrick is an exceedingly common species in 

 central Illinois and has been recorded from Ohio, Wisconsin, 

 and Minnesota. 



D. (dJniqtienpieiisis Herrick was first described from Albu- 

 querque, N. M., and is also found in Florida. 



1>. iiovdiuexiedirus Herrick has only been recorded from 

 Albuquerque, N. M. 



D. oi'eijoiieusis Lilljeborg is a very common species in Illi- 

 nois, occurring generally with J>. sicUoides Lillj. and D. jxiUi- 

 das Herrick, It is also common in Wisconsin and is found 

 in Michigan, Minnesota, and Oregon. 



D. sie'doides Lilljeborg is found in immense numbers at 

 Havana, 111. I have found it also in Iowa and Indiana col- 

 lections, and it was originally described from L. Tulare, 

 Fresno, Cal. 



7^. iii'iNiitiis Lilljeborg is prol)ably the common species in 

 the northern tier of states. It has been found in Yellowstone 

 Park, in the Great Lakes, and in Wisconsin, Michigan, 

 Newfoundland, Greenland, and Iceland, 



D, fr<(iicisc(iniis Lilljeborg has been found only by G. 

 Eisen, near San Francisco, Cal. 



D. etseiil Lilljeborg is also a California species. 



D. sigiiicdiidd Lillj., one of the most peculiar of American 

 species, is recorded only from the Sierra Nevadas. 



D. tryhoiiii Lilljeborg is recorded only from Multnomah 

 Falls, Oregon, 



D, ashlaiuli Marsh seems to be the most widely distributed 

 of American forms, having been found in the Great Lakes, 

 in Indiana, Michigan, AVisconsin, Oregon, Idaho, Washing- 

 ton, and in Yellowstone Park. 



