470 CALIFORNIA ACADEMY OF SCIENCES. 



tubercle, which is transverse, convex and impressed along the middle; on a 

 transverse Hue passing throngh the anterior portion of the eyes there are two 

 minute, widely distant, punctiform foveae; antenn;re slightly longer than the 

 head and prothorax together, robust, strongly clavate, basal joint much 

 longer than wide, arcuate, second slightly narrower, quadrate, third nar- 

 rower, obconical, longer than wide, joints three to seven subequal, eighth 

 very slightly wider than long, ninth abruptly much wi ier, tenth still wider, 

 equal in length, ninth and tenth distinctly wider than long, eleventh wider 

 than the tenth, as long as the three preceding together, acuminate. Pro- 

 thorax widest slightly before the middle, as wide as long, strongly convex; 

 sides rather strongly rounded, feebly sinuate near the apex, more strongly 

 80 near the base; the latter br jadly arcuate, four-tifths as wide as the disk, 

 one-third wider than the apex; basal fovea minute, very near the margin; 

 lateral impressions feeble; along the basal margin between the median fovea 

 and the basal angles there are, on each side, two small punctiform fove», 

 nearly as large as the msdian. Elytra at the humeri scarcely perceptibly 

 wider than the prothorax, at the apex nearly twice as wide as the latter; 

 sides evenly arcuate, together transversely truncate behind, convex, as long 

 as wide, two-thirds longer than the prothorax; each bifoveate at base; su- 

 tural stria deeply impressed; discal distinct, broadly impressed, terminating 

 slightly before the middle. Abdomen two-thirds as long as the elytra, much 

 narrower than the latter, parabolic in form; basal segment much longer than 

 the second; lateral border narrow, flat, rapidly attenuate from base to apex. 

 Legs rather long and blender; posterior tibite arcuate toward apex. Length 

 1.25 mm. 



California (Mendocino Co., 1.) 



The specimen described is probably a male; the sexual 

 characters are very feeble, the fifth segment being longer, 

 feebly flattened, and broadly bilobed at apex. The species 

 is much smaller than either of the two previously described 

 from these regions, and the fonrth joint of the maxillary 

 palpi has a long and distinct terminal process. The third 

 joint of that organ is elongate and clavate, the fourth more 

 strongly arcuate within, subsecuriform, elongate and strongly 

 compressed. 



T. bipuacticeps ^' sp.— Rathsr slender, convex, polished, impunctate, 

 piceous; elytra, legs and antennae pale rufous. Head moderate, slightly 

 longer than wide, convex; eyes large, convex, prominent, just behind the 

 middle; genae convergent, feebly arcuate, clothed with longer, dense pubes- 

 cence; base broadly arcuate; antennal tubercle much wider than long, 

 large, divided by a feeble canaliculation; antennce as long as the head and 



