130 AMERICAN COLEOPTERA. 



hind angles, which are parallel and not produced ; disk strongly mod- 

 erately coarsely punctate, the punctures nearly in contact at sides, 

 slightly finer and distant by their own diameters — more or less — at 

 middle ; median line impressed posteriorly. Elytra parallel in basal 

 two-thirds, finely striate, striae distinctly punctate, intervals subbiseri- 

 ately punctate. Beneath a little more finely and less closely punctate. 

 Basal joint of tarsi a little longer than the second. Length, 8.3-10 

 mm. ; width, 2.1-2.7 mm. 



Southern California — Pasadena (type), Pomona, Clare- 

 mont, Riverside, Santa Monica. Specimens from Healds- 

 burg and Russian River in Northern California seem scarcely 

 different, and are so referred. 



This species is the commonest one of the genus in South- 

 ern California, appearing on willows in early spring. It re- 

 sembles in a general way several Californian species. Of 

 these infuscatus differs in having shorter antennae, the joints 

 relatively a little less elongate, the prothorax uniformly 

 aeneo-piceous and more finely punctate, and the elytra of a 

 darker tint ; discoideus has the pale side margins of the pro- 

 thorax wider and is more coarsely densely punctate ; oca- 

 dental is has the prothorax entirely piceous, and also much 

 more coarsely densely punctate ; canus is more coarsely 

 sculptured, darker in color, and with longer antennas. 



ATHOUS Esch. 

 A. aterrimus n. sp. 



Intense black throughout, dull, pubescence fine, fuscous. Antennas 

 as long as the prothorax, second joint half as long as the third, third 

 broadly triangular, a little narrower and shorter than the fourth, fourth 

 and fifth equal, broadly triangular, a little longer than wide ; follow- 

 ing joints gradually narrower. Head densely punctate, strongly sub- 

 triangularly impressed. Prothorax slightly longer than wide, gradu- 

 ally narrowed from the base, sides scarcely at all sinuate posteriorly, 

 broadly arcuate, hind angles short and blunt, not produced, rounded 

 at tip and not divergent; punctuation very dense throughout, median 

 line with trace of impression in certain lights, hind angles with a fine 

 but strong, moderately long acute carina. Elytra not much more 

 than twice as long as the prothorax, very feebly narrowed from the 

 base for two-thirds their length, then more rapidly so to apex, stria? 

 moderate, intervals rather densely punctate. Beneath more shining, 

 pubescence paler, rather closely finely punctate, the propleurse more 

 densely so. Basal joint of hind tarsi as long as the next three, joints 

 1-4 all with a short lobe, the lobes of the second and third a little more 

 developed. Length, 10.5 mm. ; width, 3 mm. 



