60 Coleopterological Notices. 



thorax, rather strongly convex, completely devoid of fovea or tnberculations ; 

 antennal prominences small and feeble ; epistomal suture fine, feeble, not im- 

 Ijressed ; eyes moderate ; antenn?e rather short and strongly incrassate, com- 

 pressed ; second joint nearly as long as the next two, three to six gradually 

 shorter, the latter slightly transverse, seven to ten gradually wider, strongly 

 transverse, tenth on the compressed side nearly twice as wide as long, the 

 eleventh ovoidal, obtusely pointed, longer than wide and as long as the pre- 

 ceding two. Prothorux distinctly narrower than the base of the elytra, sides in 

 apical three-fifths parallel and rather distinctly arcuate, convergent and evenly, 

 very feebly sinuate thence to the basal angles, which are obtuse, narrowly 

 rounded and not at all prominent ; lateral angles very broadly obtuse, rounded 

 but rather distinct, apical nearly right, narrowly rounded ; apex nearly one- 

 half wider than the base, both subtruncate ; disk scarcely one-fourth wider 

 tlian long, rather finely, somewhat densely and distinctly punctate ; pubes- 

 cence rather long, pale fulvous ; median groove rather deeply impressed and 

 very distinct. EJi/tra quadrate, two-fifths wider and nearly one-half longer 

 than the prothorax ; sides nearly straight and almost parallel ; surface densely 

 and somewhat coarsely punctate, the punctures rather deeply impressed, sepa- 

 rated by about their own diameters ; pubescence fine, moderate in length, cine- 

 reous, rather dense and distinct. Ahdomen slightly narrower than the elytra 

 and much wider than the prothorax, finely, sparsely punctate, finely and more 

 densely so beneath. Length 3.U mm. 



California (Sonoma Co.). 



The unique example represents a very distinct species differing- 

 from any other which I have seen ; it may, however, be placed 

 next after sinuatus in the catalogue. 



The hypomera are very narrow, scarcely more than one-third as 

 wide as the distance thence to the coxae, very feebly concave, the 

 sutures distinct ; the coxal fissm-es are long and very widely open. 

 The mentum has a large, moderately deep median impression ; it is 

 shining and coarsely reticulate, the hypoglottis thin, polished, flat, 

 not reticulate and rather long, being about one-fifth as long as the 

 entire mentum, the dividing suture very feeble. 



B. gracilis n. sp. — Slender and somewhat convex, black throughout ; 

 antennfe piceous, paler toward base and apex ; legs testaceous ; head feebly 

 shining, rather coarsely, feebly granulose ; pronotum strongly shining, coarsely, 

 strongly reticulate ; elytra and abdomen polished, the latter coarsely reticu- 

 late, the lines fine. Hecul rather distinctly narrower than the prothorax, rather 

 strongly convex, not tuberculate ; median fovea nearly obsolete ; surface finely, 

 sparsely and not distinctly punctate ; neck transversely reticulate ; antennal 

 tnberculations small, not strong, polished at the apices ; suture very feeble, 

 not impressed ; antennae moderate, strongly incraf sate ; second joint much 

 longer than the next two together, gradually, strongly incrassate from the 

 fourth joint, tenth strongly transverse, eleventh shorter than the two preced- 



