VOT.. XT 



1889. 



1 ] PROCEEDINGS OF THE NATIONAL MUSEUM. 407 



margined with red. Wings hyaline; stigma and veins brown, the 

 areolet quadrate, the second recurrent nervure entering it a little 

 beyond the middle. 



Habitat.— Normal, Illinois. 



Described from a single specimen, reared by Mr. F. M. Webster, 

 June 17, 1886, from a sawfly found on wheat. 



Mesostenus leucocoxa, sp. rtov. 



Male. — Lengh 9 mm . Black, opaque, including the abdomen rather 

 coarsely punctate; face, clypeus, anterior orbits, lower part of cheeks, 

 scape beneath, triangular spot at base of mandibles, palpi, anterior mar- 

 gin of collar and the upper hinder margin interrupted medially, 

 a round spot on disk of mesouotum, scutellum, post scutellum, tegulse 

 and a line beneath, spot on mesopleura, hinder lateral posterior angles 

 of metathorax, including the prominent spines, and anterior and mid- 

 dle cox* and trochanters and the posterior coxa? and trochanters, black; 

 the posterior coxa? have an oval white spot above; anterior and middle 

 legs reddish-yellow, the terminal joint of middle tarsi black; posterior legs 

 black, the femora rufous basally, the tib;e with a white ring at base 

 and the tarsi white, except apical joint and basal half of the basal 

 joint, which are black, the basal portion, however, with a narrow white 

 ring. Wings hyaliae; stigma and veins black, the areolet large, 

 quadrate, the second recurrent nervure entering it between the middle 

 and apex, the submedian cell shorter than the median. 



Habitat. — Cadet, Missouri. 



Described from one specimen received from Mr. J. G. Barlow. 



CRYPTUS Grav. 

 Table of new species. 



Wings hyaline, or fnsco-hyaline 2 



Wings black, or black with strong violaceous reflections. 

 Wings black. 

 Metathorax unarmed. 



Head, thorax and legs, black ; abdomen rufous C. coloradensis, sp. nov. 



Head, thorax, legs and abdomen ferruginous C. caUforniciis, sp. nov. 



Head, thorax and abdomen mahogany brown C. nigripennis, sp. nov. 



Metathorax armed. 



Head and thorax black ; legs and abdomen rufous ; antenna- ringed with 



white t C. armatus, sp. nov. 



Wings black with strong violaceous reflections. 



Head, thorax and legs black ; abdomen rufous C. violaceipennis sp. nov. 



2. Wings hyaline 3 



Wings fusco-hyaline. 



Head and thorax black ; abdomen rufous. 



Superior margin of collar white ; legs rufous C. alamedensis sp. nov. 



Superior margin of collar black ; hind legs black C. monlicola sp. nov. 



Head, thorax and abdomen black; legs (except black trochanters, hind coxa% 



tibiae and tarsi), red C. hirtifrons, sp. nov. 



Head, thorax, abdomen and legs, ferruginous C. ferrugineus sp. nov. 



