97 



F The female front clothed with a fringe of moderately long 

 hairs, the declivity broadly sulcate; the male declivity 

 more deeply, simply sulcate; the punctuation of the 

 elytra unusually close and decidedly confused on the 

 disc. Stouter than cariniceps and somewhat resembling 

 Conophthorus in form and sculpture. 



G The pronotum with the sides converging on the 

 cephalic two-thirds or more, rather narrowly rounded 

 in front; pronotum and elytra with punctures 

 moderate in size and density. 



torreyanae n. sp. Page 101. 



GG The pronotum with sides nearly straight on about the 

 basal half, then constricted and broadly rounded in 

 front; pronotum and elytra coarsely, densely and 

 deeply punctured. confinis Lee. Page 101. 



FF The female with the front densely clothed with short hairs 

 or minute pubescence; the male with the declivity armed 

 with a stout prominence or more elongate blunt horn 

 from the summit of the lateral convexities. 



G The female front very minutely pubescent, with a 

 large concavity on each side of a very strongly 

 developed acute median carina; the male with the 

 declivital convexity of each side bearing a blunt 

 horn directed mesad, the apices of the horns in 

 contact at the suture, cariniceps Lee. Page 102. 



GG The female front densely clothed with short hairs or 

 very short pubescence, the pubescent area usually 

 convex, in some individuals with a tendency towards 

 the carina and concavities of cariniceps (PL 16, 

 fig. 6); the male with the declivital convexity of 

 each side bearing a stout prominence or sometimes 

 a very short blunt horn, never long enough to reach 

 the suture. canadensis Sw. Page 102. 



DD The pronotum very broadly rounded on the front margin and 

 only very feebly serrate; the elytral interspaces very sparsely 

 punctured ; the declivity rather narrowly rounded at the apex, 

 and broadly sulcate; the female front densely clothed with 

 short hairs on a circular, convex area; the declivity with the 

 suture and lateral convexities distinctly granulate. 



intextus Sw. Page 102. 



CO The declivity acuminate or at least acutely rounded at the apex, as 

 viewed from above, with a shining sulcus on each side; with the 

 suture strongly elevated and usually granulate; the antennal club 

 with the sutures similarly arcuate below. (PI. 16, fig. 4). 



D The punctures of the elytral strise more or less confused towards 

 the suture, the interspaces evidently punctured; the front of 

 the female usually densely clothed with long hair; the last 

 ventral deeply emarginate. 



E The elytral interspaces sparsely punctured; the strial punc- 

 tures in fairly regular rows, slightly confused near the 

 suture; the declivital sulci wide and somewhat shallow. 



pulchellus Eichh. Page 102. 

 36198—7 



