. Bulletin. Natural history; Natural history. March 1938 ROSS: NEARCTIC CADDIS FLIES 173 pair of long, sclerotized styles which arise under and laterad of the central style and proceed as far caudad as the rest of the genital capsule; these sclero- tized styles diverge slightly from near the base to almost the apex but at this latter point curve mesad and almost touch at extreme apex. Cerci long anil slender, clavate, bearing at their apex a cluster of scattered setae and reaching not quite so far caudad as the middle lobe of the tenth tergite. Claspers com- plicated, the basal portion embraci
. Bulletin. Natural history; Natural history. March 1938 ROSS: NEARCTIC CADDIS FLIES 173 pair of long, sclerotized styles which arise under and laterad of the central style and proceed as far caudad as the rest of the genital capsule; these sclero- tized styles diverge slightly from near the base to almost the apex but at this latter point curve mesad and almost touch at extreme apex. Cerci long anil slender, clavate, bearing at their apex a cluster of scattered setae and reaching not quite so far caudad as the middle lobe of the tenth tergite. Claspers com- plicated, the basal portion embracing a large proportion of the segment, the two claspers truncate anci approximate on the venter; the apex is divided into two lobes, a triangular, lateral lobe set with long, scattered setae and a very heavy, dark, sclerotized mesal lobe which is sigmoidal from lateral view, broad at base and tapering to apex, and which from a ventral view curves into meson, where it touches the mesal pro- cesses of the other clasper. The two pro- cesses proceed distad with only slight divergences until close to the apex, where they are angled laterad to form a short point. The dorsal margin of the mesal process is produced into a thin, serrate ledge. Oedagus with the basal portion tubular and sinuate, constrictetl just beyond middle and expanded into an apical bulb which is three times as long as wide, is constricted in the middle and bears at the apex an ovate mass of membranous folds. Holotype, male.—Lovells, Michigan: M;iy 24, 1936, north branch Au Sable River near town, J. W. Leonard. Theliopsyche epilone new species Closely related to parva Banks, this species differs from it in the longer pro- cess of the clasper, fig. 115. Male.—Length 6 mm. Body dark brown with the membranous areas and legs below coxae lighter brown to straw color. Pubescence dark brown. General structure: Maxillary palpi cylindrical, the apical segment slightly longer than the preapical and clothed with abundant, v
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