176 Journal New York Entomological Society. [^'"'- ^i-^- 



ately strong, straight, those of the cephalic legs forked ; all femora swollen 

 moderately, simple, the tibi;e straight, slender ; proximal joint of cephalic 

 tarsi shorter. 



Thorax rather long, the i)ronotum especially long, from dorsal aspect 

 nearly transverse-quadrate and broader than the rest of the thorax, pro- 

 duced cephalad into a neck ; mesonotum with distinct, rather deep parapsidal 

 furrows and trilohed, the scutum longest of the lobes, convex and rounded off 

 cephalad, its cephalic margin conversely curved and the sclerite saddle-shaped ; 

 the i)arapsides short, lobelike, their axes cephalo-laterad, convexly rounded. 

 Scutellum not very large, oval and convex, without transverse or longitudinal 

 grooves; metathorax slightly convex, somewhat longer than the scutellum, 

 with a median groove, its spiracle moderate in size, circular ; metathorax end- 

 ing in a short, hoodlike neck. Pro- and mesonotum faintly finely reticulated, 

 the metanotum roughly so, nearly punctate. Of carinae, on the metathorax 

 there is a short, curved lateral carina leading from the side of the hoodlike 

 neck half way to the spiracle. A spiracular sulcus leads from the spiracle and 

 is nearly similar to the median groove. 



Abdomen with a distinct but very short petiole, pointed conic-ovate and at 

 base ventrad acutely produced, somewhat longer than the head and thorax 

 combined, the ovipositor not exserted. Second abdominal segment longest, 

 covering about a fourth of the abdomen, the others moderately short, gradu- 

 ally shortening caudad, the caudal margins in the dorsal aspect straight. 

 Abdomen with scattered pubescence. Wings hyaline, very minute. 



Type. — The f oliowing species : 



Urios vestali, new species. 



Xormal position. 



Female. — Length. 2.45 mm. 



General color shining Ijlack, the head colored as described in preceding, 

 the body marked with ochreous as follows : Most of pronotum suffused, disk of 

 scutellum and a large area on each side of the median groove of the metanotum, 

 most of meso- and metapleurum, most of caudal coxae, the knees and tips of 

 tibiae ; tarsi yellowish, also extreme tip of abdomen ; distal tarsal joint black. 



From a single specimen. 2^-incli olijective, i-inch optic, Bausch 

 and Lomb. 



Male. — Unknown. 



Described from a single female specimen taken from the nest of 

 an ant by A. G. \'estal in Illinois. The genus is nearly wingless. 

 Captured in May. 



Type. — Accession No. 45,066, Illinois State Laboratory of Natural 

 History, Urbana, Illinois, one female on a tag, plus two balsam slides 

 (? head + appendages and $ antenna). 



