ART. 16 NEW ICHNEUMON-FLIES MUESEBECK 5 



stigma short and broad, emitting radius from its middle, the latter 

 perpendicular to anterior wing margin and slightly longer than 

 intercubitus ; second abscissa of cubitus unusually short, only about 

 half as long as intercubitus. Abdomen short and stout ; first and 

 second tergites combined longer than remainder of dorsum of abdo- 

 men; chitinized plate of first tergite broadening apically, entirely 

 finely rugulose; second and third tergites subequal in length, the 

 second completely, the third except at apex, closely finely rugulose and 

 opaque; hypopygium not surpassing apex of last tergite; ovipositor 

 sheaths barely exserted. Black; tegulae blackish; wings hyaline, 

 stigma and veins brown; all coxae black; trochanters, femora, and 

 tibiae of anterior and middle legs yellow, their tarsi whitish; pos- 

 terior legs with trochanters and femora yellow, the tibiae black, 

 pale only at extreme base, their tarsi with the basal segment black, 

 the second and fifth segments more or less dusky, and the third and 

 fourth segments pale yellow. 



Type.—U.S.^M. No. 42872, from Kaubsville, Pa. 



Host. — An unclertermined Cochlidiid. 



Four females reared August 15, 1929, by J. V. Schaffner, jr., 

 under Gipsy Moth Laboratory No. 12164 K128. 



APANTELES HALISIDOTAE, new species 



Runs to phohetri RoliAver in the key to the North American species 

 (loc. cit.) and is verj'- similar to that species. It is distinguished, 

 however, by its larger size and by the relatively longer and more 

 oblique intercubitus, which is as long as the radius and is strongly 

 angled with the latter; in addition, the subdiscoideus is much more 

 distinct, being well pigmented, while in phohetri its location is in- 

 dicated only by rows of closel}'- placed setae. Both species are gre- 

 garious parasites, but the cocoons of the two are strikingly different, 

 being pale buff and exposed in the case of pliobetri^ Vv'hile those of 

 halisidotae are pure Avhite and inclosed in the cocoon of the host. 



FeTnale. — Length, 3 mm. Head as broad as mesonotum; face 

 weakly punctate, shining; antennae as long as the body, the apical 

 segments only gradually' shorter, mesoscutum entirely closely punc- 

 tate; scutellum somewhat convex, polished, practically impunctate; 

 propodeum finely rugulose, narrowly smooth at extreme base, and 

 with a weak indication of a median longitudinal carina; stigma 

 moderately large, more than twice as long as broad ; radius obliquely 

 directed outwardly, not longer than intercubitus and sharply angled 

 with tlie latter, which is strongly oblique ; subdiscoideus distinct 

 to wing margin; posterior coxae smooth and shining; inner spur of 

 posterior tibia a little longer than the outer and slightly more than 

 half as long as metatarsus. Abdomen long-ovate, somewhat com- 

 pressed apically; first abdominal tergite broadening gradually to 



