140 AMERICAN COLEOPTERA. 



45. A. gill sire n. sp. — Bhick, with reddish aeneous lustre; legs rufessent. 

 Vestiture consisting of rather sparse squamiforni hairs. Beak as long as the head 

 and prothorax ( % ), noticeably longer and more slender { J ), rather feehly 

 curved, cylindrical; basal dilatation moderate; tip slightly expanded; surface 

 entirely shining, sparsely punctate. Basal joint of antennae scarcely longer than 

 the second, second as long as the next two, not reaching tlie eye. Front sulcata, 

 with lateral confluent lines of punctures; eyes not large, moderately prominent; 

 head beneath excavated and polished. Prothorax a little wider than long; base 

 about one-fourth wider than the ai)ex, width a little behind the middle subequal 

 to the base; posterior sinuation slight; surface alutaceous, moderately punctate; 

 basal fovea small, shallow. Elytra widest behind the middle; humeri not very 

 prominent; striae not deep; intervals wide, nearly flat; the hairs proceeding 

 from the strial punctures more conspicuous than usual. Beneath sparsely, finely 

 punctate. Length 1.6-1.9 mm. ; .065-.075 inch. 



%. Sutural angles rounded; middle and hind tibiae minutely mucronate. 



9 . Sutural angles not rounded ; tibiae unarmed. 



Taken in some numbers by Mr. Schwarz or Mr. Hul)baid, at Key 

 West, Florida, also at Biscayne. Resembles subtiiictum somewhat, 

 but very distinct by the characters given. 



4fi. A. proclive Lee. — Form variable, usually moderately robust, black, 

 with or without aeneous lustre, pubescent. Beak ( "^ ) moderate, feebly arcuate, 

 punctate and pubescent in basal two-thirds; tip glabrous, shining; (9 ) nearly 

 twice as long as in the male, more slender, finely .sculptured and punctulate 

 throughout. In both sexes there is a feeble basal dilatation, and the usual furrow 

 over the insertion of the antennae; basal joint of antennae as long as the two or 

 three following, being longer in the 9; eyes not prominent ; front sulcate. Pro- 

 thorax variable ; in the majority of specimens a little wider than long, more or 

 less constricted at the apex ; base subequal to or a little wider than the middle, 

 sometimes with a slight posterior sinuation; surface closely, rather coarsely 

 punctate, with a small basal fovea. Elytra variable; sides subparallei or broadly 

 arcuate, this difference being mainly sexual ; surface somewhat shining; inter- 

 vals wide, flat or slightly convex. Beneath strongly, rather closely punctate; 

 claws strongly toothed. Length 2.-2.6 mm. ; .08-.0104 inch. (PI. IV, figs. 9, 9a, 

 96 and 15). 



% . Sutural angles rounded ; middle and hind tibiae with a long mucro, which 

 is dentellate beneath near the tip. 



9 . Sutural angles not or scarcely rounded ; tibiae unarmed. 



Hab. — California, Oregon, Utah, Colorado, Wyoming. 



The large number of specimens before me exhibit considerable 

 variation in the proportion of parts. Specimens in the National 

 Museum from Death Valley, California, are smaller and more slen- 

 der than usual ; others taken by Mr. Wickham at Tehachapi, Cali- 

 fornia, have the thorax unusually narrow. Specimens from the 

 region about San Francisco are quite strongly teneous. The sexual 

 characters are, however, practically identical throughout, and are the 

 ones upon which reliance must be placed. 



