14 CoJeopterological Notices. 



longitudinal impression. Elytra quadrate, one-third wider and about tliree- 

 fourtlis longer than the protliorax, densely, very deeply and somewhat coarsely 

 punctate. Abdomen narrow, much narrower than the elytra ; sides straight 

 and parallel ; surface extremely minutely and sparsely punctate. 



Male. — Sixth ventral segment with a very large median area, which is 

 flattened and finely densely pubescent ; seventh broadly, feebly eniarginate 

 throughout the widtli at apsx, the middle of the emargination feebly produced 

 in a short rounded process. 



Female. — Sixth segment not densely pubescent ; seventli not eniarginate, 

 longer, the middle of the aj^ex produced in a ratlier long process — about twice 

 as wide as long — which is strongly arcuate. 



Length 2.7-3.0 mm. 



California ; Oregon ; British Columbia. 



An extremely common species, easily separated from the next by 

 its relatively longer and wider elytra and many other characters. 



A. ceplialotes n. sp. — Rather slender, parallel, piceous-black ; pronotum 

 rufous ; elytra paler, flavescent ; legs pale flavate ; antennje piceous-black 

 throughout ; integuments polished ; pubescence very short and sparse. Head 

 large, orbicular, slightly wider than long, as wide as the protliorax, feebly 

 convex; transverse basal line finely, feebly impressed ; surface finely, feebly, 

 very sparsely punctate, with a sliort fine very feeble canaliculation in the 

 middle nearly attaining the transverse groove ; antennal prominences short, 

 rather wide and rather strongly elevated ; eyes very small, feebly convex, the 

 sides behind them almost three times as long, strongly arcuate and much more 

 prominent ; antennse fully as long as the head and protliorax together, feebly 

 incrassate, second and third joints subequal, tenth rather distinctly transverse. 

 Protliorax nearly twice as wide as long ; sides more strongly arcuate anteriorly, 

 strongly convergent and feebly arcuate toward base, the latter broadly, dis- 

 tinctly arcuate, the basal angles very broadly rounded, ajiical acute, not at all 

 rounded, and slightly anteriorly prominent ; apex truncate ; disk not distinctly 

 impressed, not very coarsely or* deeply, very sparsely and unevenly punctate, a 

 broad median line impunctate. Elytra quadrate with the sides parallel, equal 

 in width to the protliorax and one-half longer, coarsely, very deeply and densely 

 punctate, a narrow line on each, near the suture rather deeply impressed. 

 Abdomen nearly as wide as the elytra ; sides parallel and very slightly arcuate ; 

 surface very minutely, sparsely punctate. 



Male. — Sixth ventral segment with a very large median area which is dis- 

 tinctly flattened, and covered very densely with fine erect pubescence ; seventh 

 broadly, feebly emarginate throughout its width, the middle of the emargina- 

 tion not in the least produced ; eiglith with a narrow elongate impression. 



Female. — Unknown. 



Length 3.0 mm. 



California (San Francisco). 



This is a remarkable species, its slightly transverse orbicular 



