576 Coleopterological Notices, VII. 



Pennsylvania (Westmoreland Co.). Mr. Schmitt. 



The female differs from the male, above described, in having the 

 pygidium a little lai'ger and more transverse, rather less convex, 

 with the groove along the lower margin narrower but rather 

 deeper and with its upper margin more acute and subcariniform; 

 the last ventral is broadly convex, while in the male it has a 

 rather small and elongate-oval median impression, smooth and of 

 moderate depth. In the female the structure of the front does not 

 differ greatly from that of the male but the sculpture is finer and 

 denser and the antennae are simple, the last three joints gradually 

 wider; the foveas are less basal and somewhat less widely sepa- 

 rated and the basal carinse of the abdomen are still shorter and 

 separated by fully ^ of the discal width. In the general form of 

 the body the sexes do not differ greatly, but the el^^tra in the 

 female are less abbreviated and about as long and wide as the ab- 

 domen. 



This species may be placed near lineaticollis s.nd bistriatus, dif- 

 fering from both in the less tumid pygidium with transversely ex- 

 cavated lower margin. The last named species are mutually very 

 closel}'^ allied, differing slightly in antennal structure and form of 

 the elytra, these being more elongated and with less arcuate sides 

 in lineaticollis ; in bistriatus the canaliculate median line of the 

 pronotum of lineaticollis is almost or quite completely wanting ; 

 the male sexual characters are nearly identical, but the front be- 

 fore the antennae in the male of lineaticollis is slightly longer and 

 more concave than in the corresponding sex of bistriatus. 



B. uncicomis n. sp. — Eather stout, polished and subimpunctate, the 

 elytra sparsely and feebly, though somewhat coarsely, punctato-rugose ; body 

 pale rufo-testaceous throughout ; pubescence rather long, subdecumbent and 

 moderately abundant. Head large, much wider than the prothorax, wider 

 than long, the eyes rather well developed, convex and prominent, at nearly 

 their own length from the base, the tempora behind them much less prominent, 

 very strongly convergent and broadly arcuate to the neck ; upper surface pol- 

 ished and convex, impunctate, except the supra-antennal regions and declivous 

 front, which are coarsely punctate, the punctures mutually separated, the me- 

 dian and lateral carinse fine, long, straight and parallel ; fovese large, deep, 

 nude and separated by }4, the total width, each continued forward in a broad 

 shallow sulcus, the two feebly arcuate and convergent, becoming approximate 

 on the line of the antennae but not confluent ; front gradually and moderately 

 declivous in a convex surface, the sides before the antennae straight and con- 

 vergent to a simple, acute and rectangular point, bristling at and toward the 



