ABT. 4 NEW PARASITIC HYMENOPTERA GAHAN 33 



ward under the thorax, and wings narrower than in most of the 

 other species. 



Female. — Length of holotypc 0.60 mm.; of paratypes varying from 

 0.40 mm. to 0.90 mm. Antennae 10-jointed, inserted at the middle 

 of front of head, about as long as the insect; scape reaching to the 

 vertex, a little more than three tunes as long as broad, broadest at 

 the middle, the dorsal margin nearly straight, ventral margin slightly 

 convex; pedicel cone-shaped, very nearly half as long as scape, and 

 half as wide at apex as long; first funicle joint small, approximately 

 half as long as pedicel; second funicle joint about three times as long 

 as the first, and four to six times as long as thick; third joint equal 

 to the second; joints 4 to 6 each slightly shorter than the third and 

 gradually increasing in thickness; club not quite twice as long as the 

 sixth funicle, but distinctly thicker, elongate-ovate, 2-jointed, the 

 joints subequal, the suture slightly oblique and not easily seen 

 except in balsam-mounted specimens. Head about as broad as high 

 without distinct sculpture, shining. Thorax mostly smooth and shin- 

 ing, with some very faint traces of reticulation on the mesoscutura 

 and scutellum; parapsidal grooves complete but delicate; propodeum 

 polished. Forewings narrow, about four-fifths as broad at the apex 

 of venation as at the broadest part of blade, the posterior margin 

 slightly concave; longest marginal cilia slightly longer than greatest 

 width of wing; base of wing bare except for a single bristle behind 

 the submarginal opposite the apex of submarginal ; the area behind the 

 marginal and stigmal veins with one oblique and slightly curved row 

 of cilia extending from near the base of marginal to the posterior mar- 

 gin; from apex of venation to middle of wing mostly bare but with an 

 irregular longitudinal row of cilia near the posterior margin and another 

 median one dividing this region into an anterior and a posterior bare 

 area ; the apical half of wing uniformly ciliated ; hind wing as long as 

 forewing, narrow, with a row of discal cilia around the margin and 

 in the apex of wing a median row usually consisting of about 4 cilia. 

 Basal joint of all tarsi very distinctly longer than the second joint. 

 Abdomen conic-ovate, dorsally about as long as head and thorax, 

 the venter projected anteriorly beneath the thorax to form a mem- 

 branous sack which reaches to the head and within which the looped 

 ovipositor is plainly visible; ovipositor unusually long, extending 

 anteriorly within the membranous pouch formed by the venter to 

 reach the head and then curving back to the apex of abdomen but 

 not exserted at apex. Head, thorax, abdomen and coxae polished 

 black; femora usually dark brown, tibiae and tarsi reddish tes- 

 taceous; antennae dark brown or black, the scape and pedicel brown- 

 ish testaceous; wings faintly fuscous. 



