BARIN.E 357 



loosel}^ mediad. Length (9) 2.8-3.0 mm.; width 1.3 mm. Honduras 

 (San Pedro Sula) ; also another female specimen, apparently similar in 

 every respect, from Guatemala (Mauricio, — elev. 500 feet). 



Related rather closely to cuneatus but differs from that and 

 perditus in its relatively rather larger, though less strongly inflated, 

 prothorax, the sides of which are parallel and less arcuate to a 

 point much nearer the apex, where they are more abruptly rounded; 

 the tooth of the anterior femora is large and not very sharp, equi- 

 latero-triangular in form. 



Gymnobaris Chmp. 

 This genus resembles Madarelliis very closely, having the same 

 glossy and feebly sculptured surface and similar thoracic base, 

 scutellum and broad flat intercoxal part of the presternum; the 

 elytral surface is, however, not at all undulated, and there are 

 some other slight differences, these remarks being based upon plani- 

 plectus, of which I have a single example from Guatemala. In this 

 species, at least, the slender femora — all devoid of inferior denticle — 

 are quite different from anything observable among the numerous 

 small species of Madarellus. 



Aulobaris Lee. 



But very little structural diversification can be observed among 

 the species of this genus, and yet when compared in series and 

 noting certain differences in outline and sculpture, there can be 

 little or no doubt that the various forms described so far are true 

 species and should be so treated. Blatchley and Leng are not 

 disposed to admit the name naso, given by LeConte to the species 

 which he had previously named Baridius nasiitus, and it really is a 

 matter of slight importance, but from the viewpoint of consistent 

 nomenclature, I am disposed to admit that nasuta ought to be 

 adopted instead of naso. 



The three following new forms seem to differ specifically from 

 any of the others now known: 



Aulobaris subdita n. sp. — Piceous-black, the legs obscure rufous; body 

 oval, very convex and rather shining; beak in the female arcuate, as 

 long as the head and prothorax and more densely and strongly sculptured 

 than usual; prothorax a fourth wider than long, the sides evenly con- 

 verging and distinctly arcuate from base to the evident apical con- 



