AMERICAN COLEOPTERA. 341 



neters above given. In well preserved specimens the pubescence of 

 the thorax is more evident along the middle and at the sides. 

 Occurs in Georgia. 



B. placiclus, n. sp. — Moderately robust, ferruginous, sparsely clothed with 

 pale yellowish hair. Head coarsely punctured, vertex moderately convex, 

 scarcely punctured. Antenna pale rufous,, slightly longer than head and tho- 

 rax. Thorax at base one-third wider than long, sides arcuate in front, slightly 

 sinuate near the base; base moderately lobed at middle, on each side slightly 

 sinuate; surface coarsely punctured, and sparsely pubescent with intermixed 

 cinereous and yellowish hairs. Scutellum broader than long with whitish pu- 

 bescence. Elytra slightly longer than wide, disc feebly convex, sides moder- 

 ately arcuate, surface finely striate, striae scarcely punctured, intervals flat, 

 densely punctulate and sparsely clothed with slightly yellowish pubescence. 

 Pygidium broadly oval, moderately convex, coarsely punctured and sparsely 

 pubescent. Body beneath ferruginous, sparsely cinereo-pubescent. Legs rufo- 

 testaceous, hind femora stout with one tooth and three denticles. Length .12 

 inch; 3 mm. 



Entirely distinct by the pale ferruginous color. The elytra are not 

 of uniform color in all specimens as indistinct patches of somewhat 

 darker color are seen. The eyes are much less deeply emarginate than 

 the preceding species and the form less quadrate. 



Arizona and Texas. 



IS. exigUHS, n. sp. — Oblong oval, black, elytra in great part rufous, clothed 

 with cinereous pubescence. Head black, opaque, densely punctured. Antennas 

 black, four basal joints testaceous, as long as head and thorax. Thorax one- 

 third wider at base than long, sides moderately arcuate anteriorly, front of 

 base feebly sinuate; base at middle moderately lobed on each side slightly 

 sinuate, surface black, coarsely punctured, very sparsely cinereo-pubescent, 

 with four small spots more densely pubescent, one on each side of the median 

 lobe and one on each of middle. Scutellum small, oval, sparsely cinereo-pu- 

 bescent. Elytra oblong oval, gradually broader to apex, surface finely striate, 

 strise indistinctly punctured, intervals flat, densely punctulate, irregularly 

 clothed with cinereous pubescence; color rufous, sides narrowly piceous. 

 Pygidium broadly oval, coarsely punctured, moderately convex, rufous 

 sparsely cinereo-pubescent. Legs pale rufous. Length .08 inch ; 2 mm. 



A minute species recalling B. bisignatus of the preceding group. 



Two specimens, Kansas. 



Group IX. 



This group contains only small species characterized by the almost 

 total obliteration of the denticles of the hind femur. The denticles, 

 however, are always seen, but reduced to merely small tubercles. The 

 hind femur is moderately dilated, or the species might have been in- 

 cluded in Group IV., where, however, the male antennae are always 

 (in our fauna) pectinate. Two species occur in our fauna. 



TRANS. AMER. ENT. SOC. (44) MARCH, 1873. 



