EXPERIMENT STATION BULLETINS. 287 



CKATOTECHUS BEEVICAPITATUS, N. SP. — FEMALE. 



Color black, with a bronze or greenish reflec- 

 tion, coarsely pitted resembling the outside of 

 a thimble, slightly hairy. The hairs are short, 

 and whitish. The head is wide transversely, (Fig. 

 10) but very narrow from before back, the vertex 

 being a mere ridge. The front is excavated for 

 the antennae. Two ocelli are situated on the edge of 

 the apex, one in front and below. The compound eyes 

 Fig. io-Femaie. are oval, elongated from above downward, broadest 

 a, Antenna of Male. below. They are mottled with light and brown. The 

 antenna? are inserted low down on the front. The scape reaches nearly to 

 the tip of the vertex, it and the last joint of the antennae are white, the 

 •other joints are dark. The second joint is small, third, fourth and fifth 

 sub-equal, sixth elongated and tapering. 



The prothorax is broad, and narrow from before back; the anterior 

 and posterior margins parallel. The mesothorax is prominent, 

 parapsidal grooves absent, lateral lobes distinct, the scutellum prominent; 

 lateral white bristles margin the metathorax, and four black ones 

 mark the mesoscutellum. The post-scutellum and metathorax are wide 

 and narrow from before back, the latter narrowed posteriorly to join 

 the abdomen. The wings are transparent, iridescent, slightly clouded in 

 the center. The basal half of each wing is nearly bald, the outer hairy; 

 the sub marginal and marginal veins are nearly equal, the post-marginal 

 and stigmal rather long and subequal. The posterior wings have an angle 

 in the sub-marginal vein which is about equal to the marginal. Short 

 bristles project from the latter. A rim of short hairs fringe this wing 

 as they do the margin about the internal angle of the anterior wing. 

 The secondary wings are nearly bald to the end of the sub-marginal 

 vein. The anterior legs are black to tip of femora, though the trochanters 

 are dusky. From the tip of the femora all is whitish except the claws 

 which are black. The femora are fusiform, the tibial spurs distinct but short. 

 The middle legs are colored the same as the anterior, but the femora are 

 longer, more slim, and the tibial spurs much longer. The posterior coxae 

 and the femora except at tips, are black; all the remainder of these 

 legs are whitish except the black claws. The posterior femora are quite 

 iusiform, slighthly longer than the middle, and there are two tibial 

 spurs one shorter than the other. The middle and posterior legs are 

 ■considerably longer than are the anterior. The abdomen is short, broad, 

 oval, and deeply excavated above. The petiole is short and obscure. 

 The first joint is yellowish white above, except at the margin or rim of 

 the excavation; all else is bronze-black. The last five joints are short. 

 -Beneath, wholly black, except a few specimens are straw-colored at the 

 base of the abdomen. Length slightly more than two mm. Described 

 from many specimens. 



THE MALE. 



In the male the antennae (Fig. 10a) are not only three-branched, but they 

 are seven-jointed. The branches are very hairy and arise at the bases of 

 the third, fourth, and fifth joints. The scape is more dusky and the funicle 

 and club much lighter colored than in the female. In some specimens these 



