130 AMERICAN COLEOPTERA. 



greater distance from the base, tlie somewhat larger thorax, lack of 

 aqueous lustre and mucrouate hind tibijB. 



32. A. aiiteiiiiattiin Smith. — Moderately elongate, black, not sliining; 

 pubescence almost wanting. Beak shorter than ( % ), or about as long ( 5 ) as the 

 head and prothorax, stout, cylindrical, scarcely, or at most, feebly dilated ; tip 

 slightly exi)anded when the dilatation is marked ; surface dull, punctate through- 

 out : the apex more or less shining. Antennae inserted a little behind the middle, 

 first joint shorter than the two following united, third reaching the eye. Front 

 punctate and more or less canaliculose; eyes small but rather prominent. Pro- 

 thorax small, somewhat variable in shape, usually as wide as long; sides feebly 

 diverging from apex to base, the divergence a little stronger, as a rule, in the 

 apical half, densely, rather coarsely punctate, with a foveate line at the base. 

 Elytra at base one-half wider than the thorax, about or.e-half longer than wide, 

 widest a little behind the middle; post-humeral sinuation obvious; intervals 

 nearly flat, about twice as wide as the striiE. Beneath coarsely, densely punc- 

 tate ; legs thin; claws with an inconspicuous tooth. Length 1.8-2.2 mm.: .07-.09 

 inch. (PI, III, fig. 10). 



% . Sutural angles rounded. 



9 . Sutural angles not rounded. 



An abundant and widely difFu.sed species on the west coast, occur- 

 ring from Vancouver to Southern California; also in Nevada (Elko) 

 Wickham. 



33. A. oedorliyucliiiiii Lee. — Black, legs sometimes rufopiceous, very 

 sparsely, finely, inconspicuously pubescent. Beak as long as the head and pro- 

 thorax ( 9 )• SI little shorter ( % ), strongly curved, thicker at the base, slender 

 beyond the insertion of the anteunpe, strigose, except in apical third or fourth, 

 which is more or le.ss polished ; punctuation fine, sparse. Antennae slender, outer 

 joints not transverse, first shorter than the two following, second reaching the 

 eye. Front canaliculose; eyes not prominent. Prothorax a little wider than 

 long; sides slightly diverging from apex to base, with a more or less noticeable 

 post-apical and ante-basal constriction, which leaves the sides slightly arcuate 

 and prominent in middle half or two-thirds; surface closely, but not coarsely 

 punctate; an impressed line of varying length, but usually extending to or a 

 little in fi'ont of the middle. Elytra fully twice as wide as the prothorax, about 

 one-half longer than wide, widest at the middle ; humeri strong ; intervals nearly 

 flat, scarcely twice as wide as the striae ; punctuation beneath moderately strong 

 and close on the Srst two veutrals and at the sides of the metasternum. Legs 

 thin ; claws angulate, or with a very inconspicuous tooth at the base. Length 

 1.5-2.2 mm. ; .06.09 inch. I PI. Ill, fig. 9). 



% . Sutural angles rounded. 

 9 . Sutural angles distinct, 



Hab. — Southern California, Catalina Island, Arizona, Montana. 



This is an abundant species in Southern California, and has been 

 taken in some numbers in the Pinal Mountains of Arizona by Mr. 

 Wickham. A single female collected by Mr. Schwarz at Bear Paw 

 Mountain represents the last locality named. There is very little 



