AMERICAN COLEOPTERA 335 



cent and with a minute whitish spot on each side of middle. Seutellum round, 

 conspicuous, densely clothed with white. Elytra slightly longer than wide, at 

 base not wider than the thorax, sides moderately arcuate, black, feebly shining, 

 surface striate, striae punctured at bottom, intervals flat, minutely punctulate, 

 sparsely clothed with whitish pubescence, forming short transversely inter- 

 rupted lines, with a line on the third interval longer. Pygidium broadly oval, 

 very convex, black, opaque, coarsely and sparsely punctured and finely rugu- 

 lose, and very sparsely whitish pubescent. Body beneath black, more shining 

 than above, sparsely whitish pubescent. Legs black, anterior and middle 

 tibise piceous. Length .10 inch ; 2.5 mm. 



This species may be known at a glance by the round seutellum 

 densely clothed with white pubescence forming a very conspicuous 

 character when the specimen is examined .under moderate power. 

 The elytral ornamentation is not peculiar as our other species (B. 

 hibi'sci) is similarly marked. The differences between the latter and 

 the present species will be mentioned in detail under that head. 

 Occurs in Georgia, Louisiana and Missouri. 



B. perforatum, n. sp.— Moderately robust, black, opaque, very sparsely 

 clothed with short white pubescence. Head black, moderately elongate, 

 coarsely punctured, opaque. Antennae longer thau head and thorax, black, 

 basal joints piceous beneath, sub-serrate. Thorax trapezoidal, disc very con- 

 vex, moderately shining, coarsely punctured, sparsely pubescent with silken 

 white hairs, sides feebly arcuate and gradually convergent to apex; base 

 slightly broader than the length of the thorax, at middle very feebly lobed. 

 Seutellum longer than wide, median line distinctly impressed, clothed with 

 silken white hairs. Elytra at base not wider than thorax, as wide at middle 

 as long, sides moderately arcuate, surface deeply and rather broadly striate, 

 striae very coarsely punctured, especially at base, intervals flat, roughly punc- 

 tured and with a row of coarse punctures along the middle; color black, 

 moderately shining, very sparsely clothed with silvery pubescence. Pygidium 

 elongate oval, oblique, coarsely punctured, sparsely pubescent. Body beneath 

 black, moderately shining, more evidently pubescent than the upper surface. 

 Legs entirely black. Length .10 inch. 



The color of the surface is not at all concealed by the pubescence. 

 The elytra are more deeply striate than is usual except in the earlier 

 groups, and the punctures at base, especially, deeply impressed. The 

 striae at apex are also deep, while in most species the striae gradually 

 weaken toward the apex. 



Two specimens are before me from the cabinet of Mr. Ulke, one 

 from an unknown locality, the other from Arizona. 



B. panpercullis, Lee. (see preceding group). — This species is introduced 

 here to note a larger and more developed variety, in which the hind thighs 

 have a well defined tooth and two denticles. The elytra are clothed with cin- 

 ereous pubescence obscured by two bands of darker color crossing the elytra 

 near the base and behind the middle, composed of spaces of irregular rounded 



