286 STATE HORTICULTURAL SOCIETY. 



DEROSTENUS SPLENDENS, N. SP. (FIG. 9). 



Shining metallic green. The head is broad, 

 and like nearly the whole body finely imbri- 

 cated, which produces the beautiful iridescence 

 sparsely covered with short white hairs. Ocelli 

 and compound eyes purplish black and prom- 

 inent, the latter bearing short, stiff hairs. The 

 antennae are nine-jointed. The first four joints 

 are small, smooth, and the third and fourth or 

 ring joints very short. The other joints are 

 moniform, hairy, and subequal, the last one 

 elongate, tapering to the end. A shallow decliv- 

 ity on the front receives the antennae. 

 I |i The thorax is broad and quadrangular. Besides the short hairs there are 

 bristles, six on the prothorax, two pairs on the mesoscutum, and smaller ones 

 on the metathorax. The prothorax is narrow and crescent-shape. The 

 parapsidal grooves and a central longitudinal depression mark the mesos- 

 cutum. The scutellum is rounded and prominent. The post-scutellum is 

 narrow. The metathorax has two lateral sub-quadrangular elevations, and 

 a narrow posterior extremity where it joins the abdomen. The wings are 

 "beautifully iridescent and slightly hairy. The sub-marginal vein is broken 

 close to the base and bears two bristles. The post-marginal and stigmal 

 veins are very short. The legs are green except the tarsi, the first three 

 joints of which are white and the last black in all the feet. 



The anterior legs have the femora slightly curved, fusiform, a very little 

 longer than the tibiae. The tibiae bear each a short spur. In the middle 

 legs the femur is slender. The posterior legs have very large sub-globular 

 coxae and fusiform femora. All the legs are slightly hairy. The abdomen 

 is short and heavy. The first segment is long, the other six short and sub- 

 equal. Length, one and one fourth mm. or .05 of an inch. Described 

 from many specimens. 



Since writing the above we have reared, April 14, 1890, several more of 

 this species from the same peculiar groups of pupae, which came from the 

 oak caterpillar, Edema albifrons, and which passed the winter as pupae. 



The other species, bred from the groups of pupae, though not so numer- 

 ous, were also quite common. We bred several specimens of both sexes. 



THE SHORT-HEADED CRATOTEOHUS. 



This species belongs to the same section as does the Derostenus. 

 The antennae in the female are obviously six-jointed. If there be 

 other joints they are very obscure. The tarsi are four- jointed, the 

 prothorax prominent, mesoscutellum with four bristles, sub-marginal 

 vein not broken, post-marginal distinct, petiole short and obscure (it 

 is usually marked in this sub-family), parapsides absent, the posterior 

 ■coxae not large, post-marginal and stigmal veins quite long. Thus we 

 have the sub-family Eulophinae. The scutellum is without dorsal lines, 

 antennae are inserted low down, parapsidal sutures wanting, posterior 

 tibiae with two spurs, marginal veins less than three times as long as the 

 stigmal, antennae of the male three-branched. Thus we have the genus 

 Cratotechus: 



