No. 2326. THREE TRIBES OF ICHNEUMONINAE—CUSHMAN. 31 



Head polished, face with dense, short yjubescense; malar furrow 

 present, as long as basal width of mandible; clypeal suture weak; 

 temples strongly convex; apex of scape barely oblique, pedicel nearly 

 as long as scape; prothorax polished, thorax otherwise subpolished, 

 obscurely punctate, and, especially above, pubescent; mesoscutura 

 nearly as wide as long, prescutuni short and broad; propodeum with 

 a long dorsal median and a petiolar area more or less distinctly 

 separated, the areas polished; first tergite hardly longer than wide, 

 its sides straight and divergent, carinae obliterated shortly behind 

 summit of tergite, longitudinally rugulose; tergites 2 to 4 with median 

 areas polished or obscurely transversely rugulose, second nearly 

 twice as wide as long; intercubitus very short; nervellus straight, 

 perpendicular; hind tarsi stout, much shorter than tibia, basal joint 

 about as long as next two together. 



Piceous to black with yellowish markings and legs; head black 

 with more or less of face below antennae, apex of cly]ieus, scape and 

 pedicel, mandibles, and ])alj)i yellow; thorax piceous with more or 

 less extensive yellow markings as follows : Hind angles of pronotum, 

 lateral margins of mesoscutum and notauli, mesopleura below tegulae, 

 tegulae and scutellum; propodeum black; abdomen piceous, paler 

 toward apex; tergites 2-5 with apical areas yellow, first with this 

 reddish piceous; legs yellow with a tendency to testaceous on coxae 

 and femora, hind tibiae at apex and tarsi fuscous. 



Afale. — Very Uke female, but thorax and abdomen more highly 

 pohshed, practically without sculpture; carinae of first tergite strong 

 to apex. Paler throughout than female, but with pale color some- 

 what more extensive, the face and clypeus being entirely yellow, and 

 the legs paler with only the slightest indication of the dark color on 

 hind tibiae and tarsi. 



The National Collection contains two female specimens, one from 

 Chiric Mountains, Arizona, H. G. Hubbard; and the other from 

 Colorado, Baker. The former is a homotype of minuta Davis. 



POLYSPHINCTA (ZATVPOTA) THERIDII Howard. 



Polysphincta theridii Howard, Proc. Ent. Soc. Wash., vol. 2, 1892, p. 292, male. 

 Type— Cat. No. 2683, U.S.N.M. 



Both specimens are in very poor condition, being covered with a 

 white substance that very largely obscures the characters. The 

 following features can, however, be seen: malar s}?ace nearly as long 

 as basal width of mandible; face medially longitudinally elevated; tem- 

 ples convex, sharply sloping; propodeum with well-defined median 

 areas; rhomboidal areas of tergites distinctly set off, shagreened, 

 impressions striate, apices polished; legs slender; intercubitus short 

 but distinct; nervellus not broken. 



Black; abdomen brownish; mouth and scape pale; tegulae and 

 humeral angles of pronotum white; legs testaceous, anterior paler, 



