324 Goleopterological Notices, VII. 



19. B. catenulatus n. sp. — Feebly ventricose, rather dull and aluta- 

 ceous, the elytra more shining, deep black throughout. Read rather narrow, 

 moderately elongate, evenly, transversely convex and smooth along the mid- 

 dle, the gense feebly developed and very minutely but acutely incised ; supra- 

 orbital ridges narrovs'ly eariniform as usual, moderate in elevation even at the 

 antennse, the latter slender, only just visibly thicker basally, about % as long 

 as the body, the basal joint only very slightly thicker and barely longer than 

 the third. Prothorax relatively small, apparently not quite as wide as long, 

 moderately dilated and broadly rounded anteriorly, only moderately sinuate 

 posteriorly, the sides however becoming straight and subparallel for some dis- 

 tance from the base, the latter distinctly more than % the maximum width 

 and somewhat wider than the head ; angles right but blunt ; disk distinctly 

 longitudinally convex anteriorly, the impressions very feeble ; reflexed side 

 margins fine and rather feebly elevated. Elytra narrow, suboval, widest rather 

 behind the middle, not very full at base, the humeri obliquely rounded, fully 

 ^5 longer than wide, 3 times as long as the prothorax and 275 times as wide, 

 the reflexed margins fine ; disk evenly and moderately convex, rather finely 

 and evenly striate, the striae very strongly impressed and with very coarse 

 deep punctures penetrating half through the intervals, the latter strongly con- 

 vex, only slightly discontinuous even near the sides. Length 14.0-15.0 mm.; 

 width 6.2-7.2 mm. 



California (southern). Mr. Dunn. 



The female differs considerably from the male above described 

 in the relatively larger, much more inflated elytra, which are nota- 

 blj'' fuller at the humeri, only a third wider than long, with the 

 sculpture less coarse and more confused at the sides ; the pro- 

 thorax is actually slightly, and relatively very much, smaller, but 

 similar in form. The anterior tarsi of the male are only moder- 

 ately dilated, with the dense pad of the first joint occupying 

 more than apical half. 



This is a remarkably distinct species, but appears to be allied to 

 mimus, differing in its somewhat smaller size, much more deeply 

 impressed elytral striae, narrower prothorax and other characters. 



20. B. oreophilus Elvers— Entomologica Americana, YI, 1890, p. 111. 



Strongly ventricose, rather dull, the elj^tra more shining espe- 

 cially in the female, deep black throughout. Head very moderately 

 elongate, somewhat stout, slightl}^ rugulose near the middle of the 

 vertex, the supra-orbital ridges narrowly eariniform ; gense very 

 feebly developed and having a small angulate incisure ; antennse 

 slender, nearly § as long as the body, very feebly thickened toward 

 base, the first joint only slightl,y dilated, but little longer than the 

 third with the usual subapical seta very long. Prothorax rela- 



