Coleoj)terological Notices, VI. 143 



Obesus, f/7-anuJaris and pallens are typical of three distinct 

 sections of tlae genus, and the old world species will add several 

 others. 



1. A. oljesilS n. sp. — Stout, very convex, dull, the elytra aliitaceous, rufo- 

 testaceous, the elytra, luetasternuni and abdomen black, varying to brown; 

 pubescence short, coarse, cinereous, recumbent, rather dense and conspicuous, 

 devoid of erect setse. Head triangular, slightly wider than long, rather de- 

 pressed, the base transversely truncate or even very feebly sinuato-truncate 

 but not distinctly impressed; tempora narrowly rounded, very prominent; 

 eyes large, convex, at about three-fourths of their ovvn length from the base; 

 disk finely and closely tuberculose, with a wide smooth median line toward 

 apex; antennaj scarcely one-half longer than the head, somewhat slender, 

 moderately incrassate, the tenth joint sliglitly wider than long, eleventh only 

 slightly longer than the tenth, rounded, obtusely jwinted. Proihorax trans- 

 versely trapezoidal, distinctly wider than the head, widest and more strongly 

 rounded near the apex, the sides thence convergent and broadly, evenly arcu- 

 ate to the basal margin which is distinct and cylindrical for a short distance to 

 the base; apex transversely and very feebly arcuate, nearly one-half wider than 

 the base; disk finely, closely tuberculose, also minutely punctate, abruptly 

 declivous and very feebly concave toward the middle anteriorly, the summit 

 of the declivity not more strongly tuberculose; median line slightly impressed. 

 Elytra sulioval, very convex, scarcely more than one-half longer than wide, a 

 little more than one-third wider than the prothorax, the sides subparallel, 

 evenly and strongly arcuate; apex somewhat narrowly subtruncate; sides 

 toward base evenly rounded almost to the ijrothorax, the base broadly sinuate, 

 the basal parts of the humeri very narrow and strongly rounded; disk finely, 

 closely punctate, without impressions or omoplates. Ahdomen dull, strongly 

 reticulate, finely but strongly, densely punctate. Legs as i,n Anthicus, mod- 

 erately long, thick. Length 3.1-3.8 mm.; width 1.25-1.4 mm. 



California (San Francisco). 



The male has the anterior tibiiv thick and strongly, inwardly 

 arcuate toward apex, the fifth ventral rounded behind and un- 

 modified, the genital segment large, corneous, black, truncate at 

 apex and transversely, unequalh' impressed throughout the width ; 

 the copulatory spicule is broad and stout, but rather abruptly 

 narrowed near the apex and prolonged in a slender straight pro- 

 cess which is very strongly compressed and vertically laminiform, 

 the apex slightl}' swollen vertically' and obtuse in profile. 



This is one of the largest, and, with the exception of Tanar- 

 thrus .Halinus, probably the bulkiest s])ecies of the tribe in North 

 America. I have taken it in large numbers on the sandy sea- 

 beaches near the city. 



