. Bulletin. Natural history; Natural history. 262 Illinois Natural History Slr\ I ol. 22. Art. 2 opportunity, throuyh the courtesy of Dr. E. S. Ross, to study the holotypic male in the collection there. It is now my opinion that hbata is specifically identical with ((iliforiiiia and therefore should be reli'jiateil to s\nonyiny. Allowance must be made for slight \ariations in compli- cated genitalic structures of the character represented b\ this and other stoneHy spe- cies. The allotypic female as well as male and female paratypic specimens of cdli- furnica are in the collection
. Bulletin. Natural history; Natural history. 262 Illinois Natural History Slr\ I ol. 22. Art. 2 opportunity, throuyh the courtesy of Dr. E. S. Ross, to study the holotypic male in the collection there. It is now my opinion that hbata is specifically identical with ((iliforiiiia and therefore should be reli'jiateil to s\nonyiny. Allowance must be made for slight \ariations in compli- cated genitalic structures of the character represented b\ this and other stoneHy spe- cies. The allotypic female as well as male and female paratypic specimens of cdli- furnica are in the collection of Cornell University, and material in the Illinois Natural History Survey collection has been compared with these specimens. GAPNIIDAE In my 1935rt paper on Illinois stone- flies, I presented a key for the separation of the jjjencra of Capniidae occurring in Illinois. This ke> included the genera Allocopnia and Capiiia. Under the dis- cussion of Se/no(dpIlia iiirfjliiia Banks in the present paper. I show that my ques- tionable record of a single Illinois speci- men of Capnia {vernalis Newport?), a female (1929 and 1935rt), belongs to the genus Kemocapuia and not to Capnia. However, in 1940, specimens of Capnia (ipis (Newman) were taken in northeast- ern Illinois, and it is desirable, therefore, to present a new key to the Illinois genera of Capniidae to replace the one of 1935rt. KEY TO ILLINOIS SPECIES OF CAPNIIDAE Adults 1. Eighth abdominal tergite of male with a raised process or tubercle-like struc- ture; wings sometimes absent or ab- breviated ; anal field or lobe of hind- wing, when wing is present, large and exteniling nearly out to tip of wing . Allocapnia, p. 265 Eighth abdominal tergite of male with- out a raised process or tubercle-like structure 2 2. Wings normally developed; radial vein near point of origin with radial sector straight; no oblique crossvein beyond end of subcosta in forewing; posterior margin of large, fiarkly sclerotized medial area (mesobasist
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