164 AMEEICAN (X)LE0PTP:RA. 



Hab. — From Colorado to Texas aod westward to Southeru and 

 Lower California. 



In the male the sutural tips are narrowly rounded ; in the female 

 scarcely at all so. A moderate amount of variation is noticeable, 

 chiefly in the sculpture of the beak, length of basal antennal joint 

 and width of elytral intervals. The species is abundant on mesquite 

 throughout the southwest. 



Smith's types are from the same region as were LeConte's, and 

 are in no way different. A female example from Columbus, Texas, 

 in Dr. Horn's collection, has the til)iye and tarsi pale, the beak 

 longer, with the fourth joint of the antennte reaching the eye. It 

 possibly represents a new species, but until males turn up I prefer to 

 consider it an extreme variation of the present species. 



86. A. siiUwrnatiini n. sp. — Kobust, black; pubescence unevenly distribu- 

 ted, rather conspicuously condensed at the base of the elytra, extending on the 

 third interval more than half-way to the middle, and in a more or less ill-defined 

 patch behiud the middle of each elytron. Beak { "J, ) a little shorter than the 

 head and prothorax, parallel, rather abruptly but not widely dilated at one- 

 fourth from the base; surface densely punctate throughout. First joint of 

 antennse as long as the next two, second reaching the eye. Front a little nar- 

 rower than the tip of the beak, with two lines of confluent punctures, the inter- 

 val between them narrow, cariniform ; eyes moderate. Prothorax slightly wider 

 than long; sides moderately divergent from apex to base, a faint subapical con- 

 striction ; surface closely, not very coarsely punctate; basal fovea small. Elytra 

 scarcely one third longer than wide; humeri prominent; sides broadly arcuate, 

 widest at the middle; intervals flat, not much wider than the strige. Beneath 

 rather coarsely and closely, but not deeply punctate; legs moderate, first tarsal 

 joint less than twice as long as wide, claw joint projecting beyond the lobes of 

 the tliird, a distance equal to their length. Length 2 mm. ; .08 inch. 



Hah. — Texas. 



Described from two males, one taken at Luling by Mr. F. S. 

 Cate, of Wakefield, Mass., and now in his collection ; the other 

 without more definite locality from Mr. Liebeck, who has kindly 

 allowed me to retain his unique. The sutural angles are rounded, 

 that of the right elytron more strongly — as is usual. The vestiture, 

 narrow front and rostral punctuation, are a combination of characters 

 which render the identification of this species unusually easy. 



87. A. <lilatatiini Smith. — Robust, strongly convex, the thorax and elytra 

 forming a nearly continuous curve when viewed in profile, black ; femora and 

 tibiae yellow; tarsi, tips of tibite and knees picescent; vestiture moderately 

 conspicuous, consisting of rather fine whitish hairs, which are, as usual, coarser 

 and more numerous beneath. Beak ( \, ) not slender, parallel, subequal to the 

 head and prothorax, subangularly dilated over the insertion of the antenna? at 



