THE CANADIAN ENTOMOLOGIST. 17 



middle coxae, their trochanters, femora, except black band on apical half, 

 tibiae and tarsi entirely, posterior trochanter, base of their femora, base of 

 tibiae, and two basal joints of tarsi, white ; wings hyaline, venation dark 

 brown. 



Habitat. — West Point, Nebr., June. Type in the collection of 

 University of Nebraska. 



Closely related to Eriocampa rotunda, Nort., but the four anterior 

 femora have no black line above, and the middle femora are banded at 

 apex ; the third antennal joint is not curved. 



Pachyttematus ttigritibialis, n. sp. — 9- Length, 6 % mm.; length of 

 anterior wing, 5^ mm. Head widened behind eyes, but not strongly so ; 

 frontal furrows distinct ; ocellar basin indistinctly defined ; frontal crest 

 strong, rather pointed, slightly broken in the middle ; two ridges meeting 

 between the antennae form the frontal crest ; middle fovea distinct, oval 

 in shape ; antennae longer than head and thorax, slender, tapering, third 

 and fourth joints equal ; antennal foveas large, shallow ; middle carina 

 short, broad below, narrow above; clypeus shallowly, circularly emarginate, 

 lobes small pointed; mesonotum and scutellum shining, with a few irregular 

 punctures ; inner claw tooth distinct, in about middle of claw ; stigma 

 broadest in middle, rounded on lower margin; in one specimen the second 

 recurrent is interstitial with second transverse cubitus, in the others it is 

 close to it, but not interstitial ; venation otherwise normal ; sheath rather 

 broad, straight above, rounded below. Colour reddish-yellow ; apex of 

 mandibles piceous ; antennae, eyes, spot around ocelli, mesonotum, except 

 sutures, scutellum, metanotum, broad stripe on abdomen above, spot 

 beneath tegulse, mesopectus, posterior coxae, spot before them, posterior 

 tibiae and tarsi, sheath, black. ; posterior femora at apex dark brown ; 

 wings hyaline, iridescent, nervures, costa and stigma dark brown. 



Habitat. — Two °. 's, West Point, Nebr., June ; 1 9 » Brownville, 

 Nebr., June 5. Co-types in University of Nebraska and in author's collec- 

 tion. 



In Marlatt's " Revision of Nematinae of N. Am.," this runs to 

 auratus, Marl., but is separated from that by the black mesonotum, black 

 hind tibiae and tarsi, smaller size, not having the sheath so sharply pointed, 

 etc. The head is not strongly developed behind eyes, and it might be said 

 to go to abdominalis, Marl., but it is very different from that species, known 

 at once by the different colour, different claw tooth, etc. The black hind 

 tibiie and tarsi will serve to separate this species from its allies. 



