538 ColeojJteroIogical Notices, VI. 



third, thence convergent and ahnost straight to the apex and base, the former 

 but slightly narrower than the latter and both ver^' feebly arcuate ; basal an- 

 gles very obtuse but not wholly obliterated; latei-al edges distinctly fimbri- 

 ate but not serrulate; disk finely but strongly, not very closely punctate, 

 the punctures Ijecomiug gradually close and feel)l3' rugose toward the sides. 

 Elytra but slightly more than one-half longer than wide, only slightly wider 

 than the prothorax, the sides parallel and straight; apex evenly rounded; disk 

 somewhat coarsely and closely punctured and feebly rugose, the interspaces 

 polished. Under surface rather densely clothed with coarse cinereous i)ubes- 

 cence. Length 2.6-3.0 mm. ; width 1.0-1.25 mm. 



Texas (EI Paso). Mr. Dunn. 



The male above described has the fifth ventral short and trans- 

 versely truncate, and the inner spur of the anterior and middle 

 tibia? dilated. The female difters but slightly, having the head 

 distinctl3' and the prothorax slightly smaller, and the antenna 

 more slender though only a little shorter ; the female seems also 

 to have the legs a little more slender and pale rufous throughout. 

 Five specimens. 



LISTROMIMUS n. gen. 



The type of this genus is a species reraarkabl}^ distinct in habi- 

 tus because of its opaque sculpture, dense, even and closely ap- 

 pressed pubescence, feebly- constricted prothorax with acute and 

 everted basal angles, and small prominent e3'es situated at a con- 

 siderable distance from the base of the head, the neck being nar- 

 rowed posteriorly. The antennfe are rather long and slender, 

 though distinctly incrassate toward apex. The anterior tibise 

 are C3dindrical, with appressed pubescence and without trace of 

 external spines or set^e. The epipleura? are narrow, vanishing 

 far before the apex but with their plane almost horizontal 

 throughout, and the ungual appendages are as long as the claws, 

 subequal and detached from the outer third or fourth of the claw 

 as in Trichochrous. The remaining characters are those of the 

 tribe in general, the maxillary palpi being rather stouter than 

 usual and the tarsi long and filiform. 



1. L.. sericatus n. sp. — Elongate, suboval, strongly convex, black; legs 

 blackish-piceous, the under side of the femora rufous, more broadly toward 

 base; antennai black, testaceous toward base, the basal joint in great part 

 blackish; head and prouotum opaque, densely and evenly rugose with small 

 irregular and anastomosing punctures, the elytra polished and finely but 

 closely punctured; pul)escence Avliitish-cinereous, closely decumbent, even, 

 coarse, moderate in length and extreniely dense, without trace of erect hairs. 



