14 Natural History Bulletin. 



punctured; shoulders prominent, not acute; discal lines short, 

 indefinite. Abdomen as wide as the elytra ; the first segment 

 three times wider than long; the basal carinas nearer to each 

 other than to the margin, variable in length, but always short. 

 Legs long, slender, the posterior tibia? with a terminal process 

 which is straight in the 6, contorted in the ?. The ventral 

 sexual marks consist of a large deep fovea near the apex, 

 which has straight or convex anterior limits. Eyes (?) lunate, 

 small; the apex of the abdomen pointed, produced. 



Habitat. A common species, occurring in the northern 

 half of California, and in Oregon and Washington, as well as 

 in the British possessions. 



B. MONTicoLA, Casey. Black, shining, impunctate, antennas, 

 legs and palpi red, pubescence coarse. Length 2.2 mm. 



Head as wide as long, eyes finely granulate, sides of the 

 head behind them convergent, feebly arcuate, occiput carinate, 

 occipital foveas nude, elongate, situated on a line passing 

 through the eyes, circumambient sulcus well impressed, the 

 portions of the vertex outside of the sulcus with large shallow 

 punctures, and carinate on the lateral declivity. Frontal mar- 

 gin deeply depressed between the broad and pubescent supra- 

 antennal tuberculations. Aiitennce not longer than the head and 

 prothorax together; first joint slightly arcuate and cylindrical, 

 twice as long as thick; second to eighth subequal, conico- 

 cylindrical; ninth slightly transverse; tenth wider, transverse, 

 not longer than the ninth and obliquely truncate, (5) cuneate; 

 eleventh slightly wider than the tenth and as long as the three 

 preceding together, rounded at the base, obliquely conical 

 toward the end, not acuminate. Pi'othorax widest near and 

 before the middle, as wide and as long as the head, strongly 

 arcuate, sinuate to the base behind; disk convex, smooth; 

 median fovea large, prolonged for a short distance anteriorly; 

 the lateral small, with lateral parallel longitudinal grooves; 

 transverse sulcus arcuately limiting the leaf shaped anteriorly 

 pointed elevation with its central puncture on each side of the 

 median fovea and the basal median carina; the posterior 



