4T4 Coleopterological Notices, V. 



of them is there any structure at all approaching that figured by 

 Brendel for that sex (Mon. PL ix, f. 76b) ; the last ventral is 

 always large, flat, or very feebly convex, perfectly even on the 

 disk, and acutely rounded and feebly produced at apex. In con- 

 sidering the excavated penultimate ventral and terminal pygidium 

 of the male and the large flat apically prominent last ventral of the 

 female, it is impossible not to discern a marked homology with 

 Euplectus. The male pygidium is altogether absent in Batrisus, 

 this being another very important generic distinction. 



The antenna figured in three positions by Dr. Brendel (1. c.) is 

 very remarkable, and entirely different from anything which I have 

 observed in this genus. 



A. IJlllbifer n. sp. — Stout, strongly convex, highly polished and pale 

 flavo-ferruginous throughout, itnpunctate, the elytra very sparsely punctu- 

 late ; pubescence coarse, long but not dense. Head just visibly wider than 

 the prothorax, subquadrate ; upper surface smooth, with two small nude 

 fovese at basal third separated by rather more than one-half tlie total width, 

 also with a feeble impression just behind each of the large feeble antennal 

 prominences ; eyes large, prominent, at one-half of their own length from 

 the base ; antennae one-half as long as the body, the fifth joint very large, 

 subquadrate, nearly twice as wide as the fourth, eighth strongly acuminate 

 externally at apex, five to eight forming the usual arc. Prothorax as long as 

 wide, widest and broadly rounded before the middle ; sides feebly convergent 

 and broadly sinuate toward base; disk even, strongly convex, with a small 

 nude fovea at each side near the base, the two connected by a fine even 

 straight and transverse fold of the surface ; basal fovese feeble. Elytra convex, 

 one-third wider than long, nearly one-half longer than the prothorax and 

 distinctly more than twice as wide ; sides evenly arcuate ; humeri nearly 

 obsolete, feebly tumid. Abdomen from above fully as wide as the elytra but 

 not quite as long, the first segment forming two-thirds of the whole. Length 

 1.5 mm. ; width 0.7 mm. 



Texas. 



The unique male, from which the description is drawn, appears 

 to be somewhat immature. The anterior tibiae are strongly, tri- 

 angularly toothed externally at apical third, and the penultimate 

 ventral has an unusually small, strongly transverse excavation not 

 more than one-half as wide as its disk, the impression nowhere 

 abruptly defined ; pygidium rather large, nearly flat. A female 

 before me from Texas, probably of this species, is darker in color 

 and with much shorter elytra. 



A.. inVOlutUS n. sp. — Moderately stout, highly polished, dark red-brown, 

 the elytra paler, bright red ; legs paler, brown ; integuments impunctate ; 



