Coleopterological Notices, VI. 745 



convex, at scarcely' more than their own length from the base; tenipora very 

 prominent, rounded; base transverse, the subvertical basal wall feebly im- 

 pressed toward the middle; antennae nearly as long as the head and prothorax, 

 moderately incrassate. Frothorax transversely trapezoidal, at least one-third 

 wider tlian the head ; sides convergent and arcuate from near the apex to the 

 basal margin; apex transverse, feebly arcuate, nearly one-half wider than the 

 base; surface closely covered with small punctures and tubercles, the median 

 line impressed toward apex. Elytra elongate-oval, two-thirds longer than 

 wide, two-lifths wider than the prothorax ; sides evenly arcuate; base broadly 

 sinuate, the apex equally broadly subtruncate; humeri narrowly exposed at 

 base; disk evenly convex, finely, not very closely punctate, without further 

 modification, except the subsutural impressions at apical third W'hich are fee- 

 ble. Abdomen dull, densely reticulate, finely punctate, rather sparsely and 

 coarsely pubescent. Legs somewhat long and not noticeably stout. Length 

 2.6-2.8 mm. ; width 1.0 mm. 



Californifi ( southern ). Mr. H. C. Fall. 



The apical declivous surface of the pronotum is distinctly and 

 transversely concave, but its upper crest is not more strongly 

 tuberculose. The male has the anterior tibi;c bent, the fifth ven- 

 tral feebly sinuato-truncate at apex but otherwise unmodified, the 

 genital segment moderate in size, pale, truncate, and transversely 

 and unequally impressed, the copulatory spicule with the tip ab- 

 ruptly'' narrowed and produced in a shoi't slender acute point, 

 which is subcylindrical and not noticeably compressed. 



With the two males which I received from Mr. Fall, I have as- 

 sociated a single male from Alameda Co., which does not seem to 

 differ specifically. 



4. A. gracileiitll!>i n. sp. — Rather narrow but strongly convex, some- 

 what shining, pale rnfo-testaceous, except the abdomen and elytra, Avhicli are 

 slaty -black ; pubescence recumbent, coarse and dense as usual. Head triangu- 

 lar, rather longer than wide, feebly convex, coarsely and not densely tubercu- 

 lose, with some intermingled and very minute punctures, the smooth median 

 line entire, very wide anteriorly ; eyes rather large, moderately prominent, 

 situated at scarcely three-fourths of their length from the base ; tempora ob- 

 tusely angulate, but only slightly more prominent than the eyes ; base trans- 

 versely truncate, feebly concave toward the middle of the basal wall; antennte 

 somewhat slender, feebly incrassate, two-thirds longer than the head. I'lo- 

 Ihorax rather small, moderately convex, only slightly wider than long, dis 

 tinctly wider than the head, the sides convergent and strongly arcuate from 

 near the ajiex to the basal margin, thence parallel for a slmrt distance to the 

 base; apex transversely' arcuate; disk strongly tuberculose and with fine punc- 

 tures, the median line feebly impressed, more strongly so toward apex, the 

 apical declivity pronounced and with the tubercles along its crest slightly 

 stronger. Elytra suboval, evenly convex, scarcely more than one-half longer 



