THE CANADIAN ENTOMOLOGIST. 291 



Periclista co/i/usa, n. sp. — Body black, with the clypeus, the labriim, 

 the collar broadly, the teguUe, the legs beyond the coxae, and the abdomen 

 at sides above and for the most part beneath, liiteous, shading to 

 brownish ; the median lobe of the mesonotum for the most part and the 

 pleura, brown; the ocellar basin flat and distinct; the postocular area 

 not marked in front by a furrow ; the front finely punctured ; the fourth 

 segment of the antennae longer than the fifth ; the wings hyaline. 

 Length, 5 mm. 



Habitat : Ithaca, N. Y. 



Selandria ( Monophadniis) niarginicoUis, Nort. — An examination of 

 a type specimen proves this species to belong to the genus Periclista^ and 

 to be very similar in coloration to Periclista piirptiridorsuin, Dyar. 



Tof?iostethus. — There are three species in the Eastern United States 

 belonging to this genus, Selandria ( Monophadfitis ) bardus, Say, Selandria 

 ( Blennocampa) inahilis^ Nort., and the following new species : 



TomostetJms JVortojiii, n. sp. — Body black, with the labrura, a fine 

 line on the collar, the tegulae, the front legs below the middle of the 

 femora, and the middle and hind legs beyond the knees, white ; the saw- 

 guides concave above and broadly convex below, obliquely, truncately 

 rounded to a point at apex above ; wings hyaline. Length, 6 mm. 



Habitat : Ames, Iowa (E. D. Ball). 



Named after Edward Norton, the pioneer student of the North Ameri- 

 can species of Tenthredinoidea. 



Monophadnus distinctiis, n. sp. — Body black, with the labrum, the 

 tegulae, and the legs below the knees, white ; the antennal furrow con- 

 tinuous and distinct from the clypeus to the occiput ; the ocellar basin 

 distinct ; the scutellum coarsely punctured behind at sides ; the 

 appendage of the scutellum flat and impunctate ; the wings hyaline. 

 Length, 7 mm. 



Habitat : Lake Forest, 111. (J. G. Needham). 



Monophadmis mimitns, n. sp. — Body black, with the tegul?e, the 

 corners of the prothorax somewhat, and the legs below the knees, white ; 

 the front with a deep, broad puncture on each side above the lower end 

 of the antennal furrow but not connected with it ; scutellum with a few 

 scattered coarse punctures behind ; the scutellar appendage flat and 

 impunctate ; the antennal fovea continues with the ocellar basin ; the 

 wings hyaline. Length, 5 mm. 



Habitat : Milwaukee, Wisconsin (Ward). 



