24 Annals Entomological Society of America [Vol. X, 



shorter than the next two together; fourth segment tapering to the 

 slender style; style slender, about as long as the third and fourth seg- 

 ments together; fifth, or basal segment of style, minute, about as broad 

 as long; sixth segment three or four times as long as the fifth, tapering 

 to an obtuse point and ending in a short, slender hair. Face below the 

 antennae a little shorter than the first six segments of the antennae 

 combined; nearly straight, directed downward and forward, somewhat 

 compressed at tip from side to side. Cheeks and posterior orbits of 

 nearly equal width, only moderately broad. Eyes bare, subcircular. 

 Scutellum strongly convex, somewhat thinned, but not furrowed before 

 its margin; unanned. Abdomen smooth, convex, tapering from the 

 broad second segment; fourth segment but little more than twice as 

 broad as long; seventh segment minutely visible at the end of the 

 ovipositor. Wings with veins complete; four posterior veins, the 

 foiu-th separated from discal-cell by a distinct crossvein; the second vein 

 arises about opposite the proximal end of the discal cell, and a little 

 before the short anterior cross- vein; no anterior branch to the third 

 vein; anal cell rather broad, tenninating some distance before the wing 

 margin, the sixth vein convex. Legs simple. 



Camptopelta aldrichi, species new. 



Female. Shining black, bare. A large, light yellow spot on each 

 side of the front below, narrowly separated, their upper borders in the 

 same straight line, extending down along the orbits to about the middle 

 of the face, convex on their inner sides. Antennas black. Cheeks black 

 below the eyes. Orbits on the inferior half light yellow. A light yellow 

 stripe from the humeri to the root 'of the wings. The narrow lateral 

 margin of the first three abdominal segments yellow. Legs yellow, the 

 femora broadly black; knees and tarsi light yellow, the tibia? in the mid- 

 dle more luteous or brownish. Wings pure hyaline, the veins light- 

 colored. Length 4-5 mm. 



One specimen, near Mt. Socorro, New Mexico. 



The position of the genus is a little doubtful. The minute 

 seventh segment of the abdomen, together with the scutellum 

 and neuration will at once separate the form from the Beridinae. 

 From the known Pachy gastrins (not Pachygasterinae,' as 

 Enderlein and Malloch spell it — gasteric, gasteritis!) it differs 

 in the neuration; from the Clitellarinae by the origin of the 

 fourth posterior vein; from the Geosarginae by the absence of a 

 distinct arista. Upon the whole its position seems to be among 

 the Stratiomyinae, some forms of which, at least, have the second 

 vein arising before the cross vein. From the known American 

 genera it will be distinguished by the unarmed scutellum and 

 the absence of the branch of the third vein. 



