88 PROC. ENT. SOC. WASH., VOL. 20, NO. 4, APR., 1918 



nite, by the short rami of the antennae, and in having the third 

 and fourth antennal joints subequal on their dorsal margin. 



Female. Length 8.5 mm. Clypeus strongly convex basally with scat- 

 tered large punctures, the apical margin broadly depressed and arcuately 

 emarginate ; median f ovea elongate connecting with the depression in front 

 of the anterior ocellus; head shining, the face in front with rather close, 

 well defined punctures; the vertex and posterior orbits with punctures more 

 widely separated; postocellar area slightly arched, sharply denned on all 

 sides, about twice as wide as the median length; antennae 17-jointed, the 

 median rami shorter than the length of their joints, stout, and broader 

 basally than apically; prescutum and scutum polished with only a few 

 widely scattered, small punctures; scutellum broader than long, obtusely 

 angulate posteriorly and with large well denned punctures which are 

 closer posteriorly; mesepisterum with the punctures slightly smaller than 

 those of the scutellum; tergum shining; without sculpture; nates sub- 

 opaque with a faint reticulation under high magnification and some poorly 

 defined punctures; sheath, seen from below, rounded apically with the pad- 

 like plates two and one-half times as long as wide and close to the median 

 ridge; apical sternite with a deep narrow emargination (in depth this emar- 

 gination is fully one-third the total width of the sternite) ; venation normal ; 

 tarsal claws with a tooth near the middle; tarsi of normal length. Rufo- 

 piceous; head except a line across the ocelli and extending ventrally to the 

 base of the antennae rufo-ferruginous; angles of the pronotum, ventral 

 aspect of the tergites, sternites medianly, apices of coxae, trochanters, 

 apices of the four anterior femora, all of the tibiae basally , whitish; sterni- 

 tes, mesopectus, and nates and eight tergite ferruginous; wings faintly 

 smoky, venation dark brown. 



Male. Length 5 mm. Robust; medium fovea obsolete; head more 

 closely punctured than in the female; postocellar area strongly arched; 

 antennae 19 jointed; hypopygidium broadly rounded apically, shining, 

 with only a few widely scattered punctures. Black; sternites, ventral 

 aspect of the tergites ferruginous; legs ferruginous; bases of the coxae 

 black; anterior tibiae and the posterior knees whitish. 



Type-locality. Kanawha Station, West Virginia. Described 

 from three females (one type) and two males (one allotype! 

 reared from larvae collected on Pinus virginiana by A. D. Hop- 

 kins, and recorded under Bureau of Entomology, No. Hopk. U. 

 S. 10719b. 



TypeV&i. No. 21776, U. S. Nat. Mus. 



Neodiprion affinis, new species. 



This species is closely allied to virginiana Rohwer, but may be 

 separated from it by having the third joint of the antennae dis- 

 tinctly longer than the fourth on the dorsal margin, .in having ilie 

 tergites mostly ferruginous, and by the larger punctures on I lie 

 scutum. 



