K0.2219. A REVISION OF THE CREMASTINI—CVSnUAN. 543 



united. Petiole with carinao obsolete, the ventral edges of the tcr- 

 gito inclosing the sternite; post-petiole strongly elevated above level 

 of petiole; second tcrgite about four times as long as bjusal width, 

 slightly wider at apex, striate. 



Color about as m roliweii, but face entirely black, scape and pedicel 

 piceous, middle and hind legs paler, hind tibia with whitish stripe 

 above, tergites beyond second dark piceous red. 



Type-locality. — Colorado. 



Type.— Cat. No. 20275, U.S.N.M. 



One female collected by C. F. Baker. 



Peculiar in having the petiole as in the more typical species, while 

 otherwise but distantly related to them. 



CREMASTUS (ZALEPTOPYGUS) FUSCIPENNIS (Crcsson). 



Porizon fuscipcnnis Cresson, Proc. Ent. Soc. Phila., vol. 4, 18G5, p. 287. 



A single female specimen in the United States National Museum 

 collection agrees fairly well with the description of this species. It 

 is from Garden City, Kansas, while the type is from Colorado. This 

 specimen was used in placing the species in the table. 



CREMASTUS (ZALEPTOPYGUS) AUDAX (Cresson). 



Porizon audax Cresson, Trans. Amer. Ent. Soc, vol. 4, 1872, p. 174. 



This species, described from the male, is represented in the United 

 States National Museum collection only by that sex, one specimen 

 being a paratype. Its dark wings ally it with Cremastus fuscipennis 

 (Cresson) but it differs from that species in having the wings paler 

 and the propodcum less precipitous. 



CREMASTUS (ZALEPTOPYGUS) NIGRICLYPEALIS, new species. 



Female. — Length 9.5 mm., antennae 4.5 mm., ovipositor 3.5 mm. 

 Head from above strongly transverse, much more than twice as wide 

 as long, temples shghtly rounded, from in front subtriangular, malar 

 space as long as basal width of mandible, forming with each other if 

 extended a sharply acute angle, mandibles strongly protruding, 

 clypeus convex, sharply rounded and margined apically, nearly as 

 long as interfoveal line, which is about a half longer than foveo-ocular 

 line; foveae shghtly below level of lower eye margins; eyes parallel, 

 barely as long as width of face; face and clypeus strongly, sparsely 

 punctate, polished; cheeks opaque, sparsely punctate; orbits above 

 antennae swollen; antennae inserted slightly below middle of eyes; 

 front subpolished, with a small elevation below anterior ocellus; 

 vertex and posterior orbits spai-sely punctate; anterior ocellus dis- 

 tinctly larger than posterior, diameter of latter only about half as 

 long as ocell-ocular hne, which is about three-fifths as long as post- 

 oceUar hne; antennae but little longer than head and thorax. Tho- 



