84 PROCEEDINGS OF THE NATIONAL MUSEUM vol.84 



translucent, not thickened or raised. Second tergite about twice as 

 ■wide as long, moderately and evenly convex; hind margin slightly 

 thickened but not raised or translucent ; preapical, coarsely punctate 

 area depressed, more strongly laterally. Apical margins of succeed- 

 ing tergites normal, of third very slightly thickened. Second ster- 

 nite evenly and rather markedly convex toward base, with basal 

 median furrow; deep basal transverse groove with irregular longi- 

 tudinal riblets. Apical margins of sternites simple. Legs normal. 

 Wings with usual type of venation (fig. 15, B) ; radial cell rather 

 elongate, broadest before middle (at second intercubitus) , apex nar- 

 rowly truncate, Avith short appendicular vein; second cubital more 

 than four times as long on cubitus as on radius ; third cubital much 

 shorter than second, much higher than long, slightly wider on radius 

 than on cubitus ; third intercubitus very wavy. 



Vertex and cheeks fairly uniformly covered with scattered medium- 

 sized punctures, those on frons much coarser and closer. Mandibles 

 almost impunctate. Disk of clypeus with uniformly scattered small 

 punctures and traces of irregular longitudinal folds; sides and base 

 more finely and densely punctate. Pronotum, mesonotum, and scu- 

 tellum rather densely covered with a mixture of medium-sized and 

 small punctures ; those of mesopleura very much coarser, producing a 

 reticulate or somewhat striolate appearance; upper half of meta- 

 pleura transversely striolate, lower half almost smooth; postscu- 

 tellum coarsely punctate, except the smooth posterior portion. Pro- 

 podeum: Dorsal areas coarsely punctate, subreticulate ; lateral areas 

 stronglj^ obliquely striate; concavity obliquely striate laterad of 

 median ridge. Tegulae with few minute punctures anteriorly and 

 posteriorly. Abdomen: First tergite (under a hand lens) impunc- 

 tate; basal three-fourths of second tergite with Avidely scattered mi- 

 nute punctures, coarsely and densely punctured, depressed preapical 

 area extending forward laterally; remaining tergites coarsely punc- 

 tate but gradually decreasing to sixth, which bears only a few small 

 and many fine punctures; punctures of sternites small and much 

 scattered, but larger and closer before apex of second. Pubescence 

 short and rather inconspicuous, mostly brownish black or black, more 

 grayish on frons and sides of propodeum. 



Black, An elongate spot on base of mandible, extreme upper 

 sides of clypeus, narrow inner orbits from clypeus to near base of 

 ocular sinuses, narrow streaks in upper half of cheeks along outer 

 orbits, anterior half of dorsal area of pronotum, tegulae, except for 

 a brownish median spot, small spot on upper plate of mesepister- 

 num, two spots on scutellum, large spots covering most of dorsal 

 areas of propodeum, most of dorsal area of first tergite (except a 

 large median pentagonal black spot, produced posteriorly into a 



