NO. 2148. NORTH AMERICAN HYMENOPTERA—GIRAULT. 127 



to the spiracles (and a parallel line but broken mesad from each side 

 of the postsciitellum) and caudal margin less widely; abdomen with 

 one complete basal cross-stripe and the following, thus differing from 

 muUilineata conspicuously in having most of the stripes abbreviated 

 laterad — six abbreviated cross-stripes out from the basal one, the 

 whole connected along the meson by a mesal stripe; the first stripe 

 has a transverse marginal spot opposite it, the second and third are 

 with a pair of marginal dots in an oblique Ime (these three cross- 

 stripes about straight) ; stripe 4 is Y-shaped with a pair of the dots 

 opposite at margin, 5 the same but with longer arms (the arms of 

 the letter distad in both stripes), nearly connected with a marginal 

 spot which is transverse ; 6 is about straight and complete, some little 

 distance from the apex and followed by a mesal dot nearer to the 

 apex. Venation yellow except base and apex of marginal and stigmal 

 veins and base of the postmarginal, which are black. Stripes on fore 

 wing about as in the genotype. May be distinguished at once by the 

 presence of a somewhat longer than wide metallic green marking from 

 cephalic margin of scutum not far from cephalo-lateral angle. Par- 

 apsidal furrows curving off before the pronotum. Flagellum not 

 seen. 



Described from a female reared from Sarcobatus, Boulder, Colo- 

 rado, December, Cockerell. 



Type.— Cat. No. 19642, U.S.N.M., the female on a tag. 



EPITETRASTICHUS SEMIAURATICEPS, new species. 



Female. — Length, 2.50 mm. Abdomen long, conic-ovate, distinctly 

 longer than the rest of the hodj. 



Dark metallic blue green, the wings hyaline, the venation black, 

 the legs golden yellow except the coxae, all the middle of cephalic 

 femur (less broadly ventrad) and the other femora except at apex. 

 Face below the antennae (but not the cheeks) golden yellow excepting 

 a round spot mesad just ventrad of the antennae and an oblique stripe 

 (but incomplete) pointing to each antennal insertion from the green 

 of the cheeks down near (but not at) the apex of the head and extend- 

 ing from its origin a little more than half way to each antenna (that 

 is, dorso-mesad) ; but in one specimen this stripe was very broad. 

 Mandibles tridentate. Scape compressed; pedicel subelongate, ob- 

 liquely golden ventrad from base to apex, nearly twice longer than 

 wide at apex, subequal to f unicle 1, the latter subequal to the other two 

 funicle joints. Club 3 with a distinct terminal spine, club 1 not so 

 long as any funicle joint but longest of the club. Distal tarsal joint 

 black. Funicle 1 nearly twice longer than wide. A short, distinct 

 postmarginal vein present. Median sulcus of scutum sometimes com- 

 pletely obliterated. Propodeum short at the meson, long laterad, with 

 a broad, glabrous, depressed median carina and no others, the spiracle 



