No. 2326. THREE TRIBES OF ICHNEUMONINAE—CVSHMAN. 27 



Virginia, while in the Academy of Natural Sciences of Philadelphia 

 there is one specimen each from New Hampshire, Pennsylvania, 

 and Michigan. 



POLYSPHINCTA (POLYSPHINCTA) SLOSSONAE Davis. 



Polysphincta slossonae Davis, Trans. Amer. Ent. Soc, vol. 24, 1897, p. 368, female. 

 Type.— Acad. Nat. Sci. Phila., No. 169. 



Discussion based on type, four other females, and three males. 



Distinct from all other North American species of the genus in the 

 possession of a complete areolet. 



Female. — Clypeus strongly convex, not very deeply arched basally, 

 strongly rounded and not reflexed apically; malar space very short; 

 face distinctly longer than wide, barely convergent toward clypeus; 

 inner margins of eyes weakly sinuous; temples weakly convex; 

 notauli strong thi'oughout; propodeum with dorsal carinae strong and 

 extending more or less distinctly to apex, opaque laterally, posterior 

 face transversely rugulose, polished above; legs very stout, tarsi very 

 short, those of hhid legs much shorter than tibiae, first joint as long 

 as next tlu-ee together, last joint fully as long as second; stigma fully 

 a third as wide as long, radius originating in middle; nervellus 

 strongly broken slightly below middle; first tergite with dorsal 

 carinae strong and extending nearly to apex, irregularly rugulosely 

 roughened; tergites 2-5 with decreasingly prominent lateral elevations 

 and apical impressions, the latter broadly interrupted medially, more 

 or less obscurely punctate basally; exerted portion of ovipositer 

 about as long as first tergite. 



Alale. — Differs from female in having legs less stout, hind tarsi 

 about as long as tibiae, basitarsus barely as long as next two joints 

 together, tergites more strongly and extensively punctate, 2 and 3 

 entirely so except broad, polished apex. 



Very variable in color, the female at one extreme having the body 

 black to piceous except meso — and metapleura and sterna, scutellum, 

 and large median posterior spot on mesoscutum, which are reddish; 

 and small spot below each antenna, tegulae and spot in front, which 

 are whitish. At the other extreme the head only is piceous, the 

 thorax and abdomen testaceous, the latter more or less infuscate; and 

 with the same white markings. In the male the scutellum, face (but 

 not clypeus), propleura, and lower angles of pronotum are also white; 

 while in the darkest specimen the mesoscutum and metathorax are 

 entirely black or piceous. In the female the legs are stramineous 

 with the apices of the hind femora, basal and apical annuli of hind 

 tibiae, and apices of hind tarsal joints dark, this color pattern being 

 faintly repeated on the middle legs; in the hind femur the apical 

 annulus extends well toward the base as a narrow line down the out- 



