NORTH AMERICAN COLEOPTERA. 239 



perately, evenly and rather closely punctate. Elytra at base scarcely as wide 

 as the pronotum; sides very feebly divergent, very feebly arcuate; outer apical 

 angles rather narrowly rounded; together truncate behind; disk depressed, 

 quaclrate, two-thirds longer than the pronotam, rather coarsely, very densely, 

 evenly, strongly and subasperately punctate. Abdomen as wide as and slightly 

 longer than the elytra; sides convergent and evenly arcaate to the apex; bo - 

 der rather strong, very slightly inclined; surface polished almost impunctate 

 in the middle, finely rather strongly and densely, subasperately punctate lat- 

 erally. Legs rather slender. Under surface finely, evenly and sparsely pubes- 

 cent; tibiae finely pubescent, sparsely and minutely spinulose. Length 3.0 

 mm. 



California; (Lake Co. 2). Mr. Fuchs. 



This species also belongs near puheridum, from which it 

 is easily distinguished by its much longer elytra. It bears 

 a very deceptive resemblance to the following species, so 

 that the identification and separation of the tw^o will require 

 some care. 



A. crassicorne 'o.. sp. — Moderately robust, depressed, piceous-black; head 

 dark rufous; basal third of the pronotum and the lateral and anterior mar- 

 gins very narrowly pale testaceous; just behind the elytral humeri there is 

 on each side a small, very indefinite paler spot; under surface of the abdomen 

 and metasternum piceous-black; prosternum, head, legs throughout, palpi 

 and antennae toward base, pale brownish-flavate; antenna toward tip pice- 

 ous; head and pronotum subalutaeeous; elytra polished; head glabrous, 

 remainder finely and moderately densely pubescent. Head rather small, 

 finely reticulate and subrugulose, transversely impressed between the anten- 

 nae, finely, deeply and obliquely bistriate between the eyes; ocelli large, flat, 

 not distinctly limited, round; antennae rather strongly incrassate, scarcely 

 one-half as long as the body; joints four to ten decreasing very slightly 

 in length, the latter slightly longer than wide. Prothorax scarcely more than 

 one-third wider than long; anterior angles much more narrowly rounded than 

 the posterior; form and sculpture nearly as in veterator; punctures slightly 

 coarser and more distinct. Elytra at base fully as wide as the pronotum; 

 outer apical angles rather broadly rounded; together quadrate, two-thirds 

 longer than the pronotum, nearly as in veterator, except that the punctures 

 are obliterated along the apex. Abdomen in form nearly as in veterator, 

 punctate throughout; punctures fine, asperate, evenly and rather closely 

 placed, and more distinct toward the sides. Legs slender. Length 3.3 mm. 



California; (Siskiyou Co. 1). Mr. Behrens. 

 The fourth joint of the maxillary palpi is nearly circular 

 in cross-sections and convex throughout, while in all the 



