462 CALIFORNIA ACADEMY OF SCIENCES 



antennae, the third joint of which is, according to the de- 

 scription of Dr. Le Conte, presumably more robust than 

 the second. 



B. foveicornis n. sp. — Rather slender, convex, rufous throughout; integ- 

 uments polished, impunctate; pubescence rather long, coarse and sparse. 



Male— Head moderate, slightly longer than wide, very slightly wider than 

 the prothorax; vertex between the antennae coarsely, feebly and not densely 

 punctate, punctures asperate, elsewhere impunctate; eyes small, very con- 

 vex, prominent, rather finely granulate; base behind them broadly arcuate; 

 surface very feebly convex, very feebly and finely carinate in the middle 

 near the base, finely and distinctly carinate at each side above the eyes; 

 arcuate groove broadly impressed, extending from the base at the sides to 

 the vertex, where it becomes very feeble; foveae small, nude, very deep, 

 perforate, situated at less than one-third the length of the superior portions 

 from the base, and on the inner margin of the arcuate impression; vertex 

 declivous and slightly produced in the middle, being separated from the 

 clypeus by a narrow, feebly impressed transverse groove; clypeus large, 

 prominent, conical, strongly rounded anteriorly, very obtusely angulated at 

 the sides, edges not at all reflexed; antennse rather slender, as long as the 

 head and prothorax together, basal joint subcylindrical, not modified, nearly 

 as long as the next two together, two to seven subeqnal, distinctly longer 

 than wide, the second slightly more robust and the sixth a very little shorter, 

 eighth equal in width, distinctly wider than long, ninth equal in length to 

 the eighth, one-third wider, inner side much more strongly convergent 

 toward apex, tenth abruptly very large, nearly twice as wide as the ninth, 

 fully as loDg as wide, flattened, sides parallel, almost straight, eleventh as 

 wide as the tenth, as long as the three preceding together, ob'iquely acumi- 

 nate, very slightly flatteued on the lower side. Prothorax widest slightly 

 before the middle; sides strongly rounded, convergent and feebly sinuate 

 toward base and apex; median and lateral foveas almost equal, deep, at 

 nearly equal distances from the base, the median nude; median groove short, 

 feebly impressed, lateral more distinct; basal spines small; ridges distinct, 

 becoming obsolete before the middle, separated behind from the spines by 

 transversely arcuate impressions; base bifoveate at each side; disk strongly 

 convex, very slightly longer than wide, base much wider than the apex. 

 Elytra fully as long as wide, nearly twice as wide as the prothorax, very 

 convex; humeri prominent, not spiuose. Abdomen nearly as wide and as 

 long as the elytra; basal cusps rather long, strong, separated by scarcely 

 one-sixth the abdominal width. Legs long, slender; anterior trochanters 

 minutely toothed posteriorly; posterior tibiae with an apical process; tarsi 

 very long and slender, the po.sterior one-half as long as the tibiae. Length 

 1.9 mm. 



Tennessee 2 (Mr. Henry Ulke). 



