614 Goleopterological Notice fi, VI. 



One of the smallest species of the genus, distinguishable from 

 duhius hy its duller and blacker integuments, much less deeply 

 sinuate epistoma and by its relatively less transverse and abbre- 

 viated prothorax, which, in dubiiis, is about one-third as long as 

 the elytra. In nanus the sides of the prothorax are much less 

 convergent anteriorly than in diibius, and the general form of the 

 body is shorter and broader. 



C03i'ISATTl'S n. gen. 



Body oblong, subglabrous, the antennte long and slender, the 

 anterior tibi?e produced externally at apex and the base of the 

 prothorax transverse and straight, becoming feebly and poster- 

 iorly oblique near the sides 



This genus is closely allied to Eusattus, differing in the trans- 

 verse and not bisinuate base of the prothorax ; it is founded upon 

 a single small species which may be described as follows : — 



C. rectus n. sp. — Oblong, strongly convex, rather dull, blackish-castane- 

 ous in color, the elytral suture narrowly rufescent; legs dark rufous; anteunse 

 and tropin paler and more flavate; integuments subglabrous, the punctures 

 toward the sides of the upper surface bearing short inconspicuous hairs, the 

 outer edge of the epipleurte with a long fringe visible toward base, the under 

 surface of the the concave and longitudinally rugose propleurte without long 

 hairs; basal margin of the pronotum completely devoid of hairs, the apical 

 margin with an extremely short fringe. Head nearly one-half as wide as the 

 prothorax, convex and declivous, feebly impressed at the middle of the vertex, 

 finely but stronglj', sparsely punctate, more finely and densely so anteriorly, 

 the epistomal suture obsolete except at the sides, the apical margin feebly re- 

 flexed only at the sides, feebly sinuate at the middle; antenuse slender, not 

 quite as long as the head and prothorax, the joints elongate, third only slightly 

 longer than four to seven, club gradual and feeble, ninth joint longer than 

 wide, the tenth wider than long, eleventh oval and slightly elongate; nientum 

 flat, transverse, emarginate in circular arc; ligula angularly emarginate; last 

 joint of the maxillary palpi elongate, obliquely truncate at apex; eyes half 

 divided. ProtJiorar not (juite twice as wide as long, the apex deeply emargin- 

 ate and t^^•o-thirds as wide as the base; apical angles advanced but obtuse, the 

 basal right and slightly blunt, not prominent; sides evenly arcuate; disk 

 rather wider at basal third than at base, strongly, somewhat irregularly but 

 not denselj' punctate near the sides, finely' sparsely and feebly so toward the 

 middle; side margins very narrowly subexplanate and not beaded. Scutellum 

 triangular. Elytra longer than wide, barely as m ide as the prothorax and be- 

 tween two and three times as long, the sides feebly arcuate; apex slightly 

 produced and conjointly narrowly rounded; di.sk finely wrinkled and A\-ith 

 small moderately close-set, submuricate punctures. Abdomen polished, sparsely 



