312 BULLETIN 4r., UNITED STATES NATIONAL MUSEUM. 



icate but distiiiet posteriorly, in tlic S almost obliterated, the middle 

 lobe projecting' sliglitly upon the scutelhim. Scutellum very high, 

 transverse, convex. Metapleura subsericeous. Teguhe rnfo-i)iceons. 

 Wings hyaline, pubescent. Legs dark brown to piceous, trochanters, 

 tips of anterior femora and tibia-, base of middle and ]i()Sterior tibia*, 

 and all tarsi brownish-yellow or honey-yellow, sometimes the poster 

 ior iemora lilack. Abdomen in the 9 abont as long as the head and 

 thorax together, in S shorter; in both sexes, the petiole and the fove- 

 olai at base of the second segment striated. 



Hakitat. — Western States. 



Types in the Illinois State Laboratory of Natural History and 

 National Museum. 



This species seems to have been fust reared by Dr. Riley, from spec- 

 imens of the Hessian tly (Cccidonii/ia dcHiructor Say), August IG, 1870, 

 received from Blair, Nebr. It has, however, since been bred from the 

 same tiy, by various i)ersons in the Western States. Prof, Forbes 

 reared it in 1888 at Champaign, 111.; Proi'. Cook, of Agricultural Col- 

 lege, Mich., in 18<)(); and Prof. Webster at Laporte, Ind., in 1881>. 



I know of no si)ecimens reared in the Eastern States. Can the 

 species be moving Eastward? 



Polygnotns proximus, sp. nov. 



$ 9 . Length, 0.80 to 1.1*0""". Black, i)(>lishcd ; head thrice as wide as 

 long antero-postcrioily, the vertex jxtsteriorly tiansversely aciculated, 

 tli(^ face polished. Man<libles piceous. Antenna' 10-Jointed, brown- 

 black, much slenderer than in P. JiiimaU.s, the tlagellum slightly more 

 than twice the length of the s<'ape: pedicel long, cylindric, as long as 

 the tirst and second funiclar joints together; first funiclar joint longer 

 than thick, whitish at base; se<;6nd much longer and thicker; third 

 shorter than the second and constricted at ai)ex; club 5-jointed, slender, 

 the joints nearly twice as long as thick, the last fusiform, longer than 

 the i)receding. In the male the pedicel is oval, not quite as long as the 

 tirst and second funiclar joints together; tirst funiclar joint small, monili- 

 form; second larger, dilated and truncate at tip; club O-jointed, hairy, 

 the joints, excei)t the last, moniliform, not longer than thick, sliglitly 

 jiedicellate, the last cone-sliaiM'd, nearly twice as long as the]>receding. 

 Thorax ovoid, polished, the nu'sonotal I'urrows in<licated only poste- 

 liorly, the middle lolie i)rojecting a little on the base of the scutellum, 

 the ])arai>si(lt's at base with a tuft of ])ubescence. S<'utcllum high, 

 transverse, convex, witli a little ]>ubescence on eithei' side ])osteriorly. 

 Metai)leura sericeous. Tegnla' black. Wings hyaline, iridescent, i)ubes- 

 cent. Legs brownish-])ic('ous, the anterior knees, tips of anterior tibia? 

 and all tarsi, honey-yellow. Abdomen in 9 pointed at tij), slightly 

 longer than the head and the thorax together, in c? oblong oxal, not 

 longer than the thorax, the petiole striated, the second segment with 



