300 Natural History Bulletin. 



lateral fovejE small, impressed on the sides, median fovea 

 elongate. Elytra three-fourths longer than the prothorax, 

 wider than the prothorax near the shoulders and twice as 

 wide near the tips; discal lines fine, slightly impressed, sutural 

 lines straight, parallel. Abdomen elongate, carinse divergent, 

 enclosing not quite one-third of the segmental width. Pos- 

 terior tibice slightly dilated. 



Habitat. Mendocino county, California. Resembles in 

 description Leconte's B. siibtilis. 



B. deformata, Lee. Dark piceous-brown or black, not 

 conspicuously, very indistinctly punctulate, pubescence very 

 fine, inconspicuous, elytra, legs and palpi red, antennse dark 

 piceous-red. Length, 1.2 mm. 



Head finely pubescent, much wider than long, the disk of 

 the vertex nearly quadrate, e3^es coarsely facetted, tempora 

 slightly arcuate, convergent, occiput longitudinally convex, 

 frontal margin straight; between the rectangular, ver}^ slightly 

 elevated supra-antennal tuberculations and near the frontal 

 margin, transversely impressed, is the fovea, an indefinite 

 acupuncture in *; occipital fovea; small, in a line through the 

 middle of the eyes, mutually more than four times as distant 

 as either from the eye, with a shallow sulcation or opening 

 anteriorly. Antenucp no\. straight (£), joint first short, quad- 

 rate, robust; second sub-quadrate for one-half of the first, 

 thicker, outside nearly straight, inside hemispherical, enlarged, 

 deeply foveate beneath; third and fourth transverse, sub-len- 

 ticular, much narrower than the first; fifth, sixth and seventh 

 subequal, decreasing in width; fifth slightly wider than the 

 first joint, all transversely lenticular; eighth smallest, obliquely 

 trapezoid, outside longer, transverse; ninth and tenth grad- 

 ually larger, regular, trapezoid, connate with the base of the 

 eleventh, which latter is as thick as the second, obliquely 

 pointed inward, externally arcuate, inside sinuate at the base, 

 thence straight to the tip. In the female the antennae are 

 similar, curved, with simple joints, second joint "Smaller than 

 first; second to seventh subequal, longer than wide, obconical; 



