AMERICAN COLEOPTERA. 231 



of the specimens before me ; the coxae aud legs are, however, yellow 

 in all. 



34. B. sutnralis, Lee. New Spec. Col. (Smiths. Svo), 5.3.— Blackish-brown, 

 antennae testaceous, outer joints piceous, legs and elytra testaceous, the latter 

 with the suture, and sometimes the base fuscous. Head and prothorax finely 

 granulated, nearly opake; the former with a very small occipital fovea, and a 

 few scattered punctures; the latter finely and sparsely punctured; dorsal line 

 very fine, hind angles obtuse, not rounded. Elytra finely and deeply but not 

 very densely punctured, sutural angle very much rounded. Dorsal segments 

 shining, sparsely puuctulate towards the sides; ventrals finely not densely 

 punctulate. Side margin of prothorax acute, episterna narrow, concave. Men- 

 tum flat, opake. Length 3 mm ; .12 inch. 



Banks of Gila River, Arizona. No sexual diflPerences observed in 

 the four specimens in my collection. 



35. B. pliytosinns, n. sp. — Slender, yellow-testaceous, head ami penulti- 

 mate dorsal segment dusky. Head very finely alutaceous, with a small occipital 

 puncture. Frothorax wider than long, finely granulate, opake, deeply but finely 

 punctured, dorsal line fine, abbreviated at each end, sides feebly rounded, ex- 

 cept towards the base, hind angles indistinct. Elytra strongly rather densely, 

 but not coarsely punctured, sutural angle very much rounded. Dorsal seg- 

 ments sparsely punctu4ate, ventrals more distinctly punctulate. Side margin 

 of prothorax acute, episterna narrow, concave. Mentum tlat, opake, wiih a 

 small basal fovea. Length 2.5 mm; .10 inch. 



%. — Seventh ventral segment obtusely prolonged behind; eighth truncate 

 at tip, broadly but not deeply concave. 



One specimen, Soulheru California; collected by Mr. Crotch. The 



form and color give to this species much resemblance to those of the 



genus after which I have named it. 



36. B. COgliatns, n. sp. — This species is larger than the next, and exactly 

 resembles it in form and sculpture; the head and occasionally the dorsal seg- 

 ments one to six are darker, and the elytra are not at all fuscous along the 

 suture; otherwise the color is a uniform reddish-yellow. Lenglli 2.5 mm; 

 .10 inch. 



Carolina to Texas; the eighth ventral segment of the % is deeply 

 triangularly impressed. 



37. B. eniargiuatus. Say, (Oxytelus), Tr. Am. Phil. Soc. iv, 461 ; ed. Leo. 

 ii, 577; Er. Staph. 780; B. troglodytes, 'Er. ibid, 775.— Blackish, antennae, legs 

 and elj'tra pale, the latter with the suture dusky. Head and prothorax shining, 

 polished, sparsely but deeply punctured, the former convex, frontal impressions 

 short, supra antennal ridges very small; epistoma convex, with the angles 

 slightly elevated, and the front margin subemarginate. Prothorax a little 

 wider than long, sides rounded into the base, hind angles wanting. Elytra 

 finely not very densely punctured, sutural angle very widely rounded. Dorsal 

 segments very sparsely, ventrals sparsely punctulate. Side margin of pro- 

 thorax acute, episterna narrow, concave. Length 2 mm; .08 inch. 



