f 



MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPTDyE. 391 



yellow, the stigmal vein oblique, three times as long as the marginal; 

 basal nervure distinct. Abdomen oblong-oval, truncate posteriorly, 

 the petiole a little more than twice as long as thick, faintly striated. 



Habitat. — Santa Crnz Mountains, California. 



Types in Coll. Ashmead. 



Heniilexis brevicornis Say. 



Psilus brevicornis Say., Lee. Ed. Say, I, p. 221. 



Diapria brevicornis Assliiu., Can. Ent., xix, j). 1.96; Cress. Syn. Hym., ]•. 251. 



])lack, polished, immaculate; tibiie aud tai\si pieeous. 



Inlial)its St. Peters river. 



Autciinie short, first joint much elongated, second joint longer than the remaining 

 ones, which are subcylindric-qnadrate; mandibles pale, testaceons; thorax convex, 

 rounded, two faint impressed lines each side converging to the scutel and on the 

 posterior margin two indistinct dull whitish spots; scutel elevated, convex, feet 

 dark, pieeous; thighs nearly black; wings, costal nervure indistinct; abdomen de- 

 pressed, fusiform, acute at tip. Length more than one-twentieth of an inch. (Say.) 



This si^ecies is unknown to me, but evidently belongs here. 



PARAMESIUS Westwood. 



Phil. Mag., I, p. 129 (1832); Forst. Hyni. Stud., n. p. 12.S (18r.6). 



Cerapsilon Hal. ( ?) 



(Type P. rvfipes Westw.) 



Head transverse, the occiput rounded, the cheeks bare; ocelli 3, 

 distinct in a triangle; eyes oval. 



Antenme inserted on a frontal prominence, 13-jointed in both sexes, 

 in 9 gradually incrassated toward tips, clavate, the scape reaching far 

 beyond the ocelli, slenderer toward the base; pedicel stouter and 

 longer than the first funiclar joint, narrowed basally; first funiclar 

 joint only a little longer than thick, a little shorter than the second; 

 seventh to twelfth wider than long, the thirteenth fusiform or ovate, 

 more than twice as large as the preceding; in $ longer than the body, 

 filiform, the pedicel and the first funiclar joints about equal, the second 

 nearly thrice as long as the first, slightly emarginate at base, the 

 following joints long, cylindrical, four or more times longer than thick. 



Maxillary i)alin 5-jointed. 



Mandibles bifid at tips. 



Thorax oblong-oval, narrowed in front, the prothorax transverse, 

 woolly at the sides; mesonotum with 2 distinct furrows; scutellum 

 deeply bifoveated at base, the foveas often confluent, forming one deep 

 fovea, or separated only bya slight carina; metathorax short, emar- 

 ginated posteriorly, a short conic keel at base, and with the posterior 

 angles subacute. 



Front wings pubescent, ciliated, the costal cell completely closed; 

 the submarginal vein joins the costa at or a little before the middle of 

 the wing; the marginal vein is about thrice as long as thick, with a 

 stump of a stigmal vein; basal vein absent or indistinct. 



