Coleopterological Notices, IV. 387 



widely overlapping and extremely dense, yellowish in color, a large 

 suffused sutural spot from the middle of the elytra to the scutelluni, 

 becoming narrower anteriorly, equally densely clothed with brown 

 scales; median parts of the pronotum rather darker, the scales being 

 slightly sparser; recurved setse indistinct. Head finely but roughly 

 punctate, squamulose anteriorly, the constriction fine, deep; beak 

 in the male not very thick, feebly, evenl}^ arcuate, dull, punctate, 

 sparsely squamose, quite distinctly longer than the head and pro- 

 thorax, the antenniB inserted at apical third, in the female longer, 

 smoother, minutely, sparsely punctate except toward base, evenly, 

 moderately arcuate, three-fifths as long as the elytra, the antenna? 

 inserted at apical two-fifths; antennae moderate, second funicular 

 joint fully as long as the next two but rather longer in the female 

 than in the male ; club somewhat large, elongate-oval. Prothorax 

 one-half wider than long, the sides subparallel, strongly, evenly 

 arcuate, more convergent anteriorly and very broadly, just visibly 

 constricted. Elytra at base one-fourth wider than the prothorax, 

 nearly three times as long; sides nearly straight and scarcely at all 

 arcuate in basal half; disk just visibly wider behind the middle; 

 apex acutely, evenly ogival; stri* fine throughout. Length 2 0-2.8 

 mm.; width 1.0-1.55 mm. 



Texas (Austin and El Paso); Arkansas and Louisiana. I found 

 this species some years ago in great abundance on the banks of the 

 Colorado River, in June. It is allied to discoideus and differs in 

 its fine elytral stria? toward the middle and base, in the narrower 

 bodily form and smaller size, red legs, and in the color of the vesti- 

 ture. The brown subbasal spot of the elytra is frequently obsoles- 

 cent. 



4 S. amoeiillS Say.— Cure. 26, Ed. Lee, I, p. 294 (Tychius) ; Lee: Proc. 

 Am. PhiL Soc, XV, p. 168 (Pachytychius). 



Broadly oval, convex, black, the legs rufous to piceous; upper 

 surface clothed densely throughout with rather large, coarsely stri- 

 gose scales, which are not imbricated on the elytra, confusedly mot- 

 tled whitish and dark brown, the whitish scales more conspicuous 

 at the base of the third interval and in two distant vitt;e on the disk 

 of the pronotum, often visible only in basal half; under surface and 

 lateral edges of the prothorax densel}' clothed with whitish scales. 

 Beak thick, feebly arcuate, longer than the head and prothorax, 

 dull, rugose, denseh' squamo.se and with the usual fasciculate tufts 

 at base ; antennae inserted at apical two-fifths, the second joint of 



