550 Coleopterological Notices, IV. 



club oval, pointed, densely pubescent and as long as the preceding 

 five joints, with its basal joint constituting two-fifths of the mass. 

 The prothorax is feebly narrowed and straight at the sides to apical 

 third, then broadly rounded, more convergent and deeply sinuate to 

 the apex, the latter subtubulate and three-fifths as wide as the base; 

 disk finely but rather sparsely, distinctly and unevenly punctate, 

 with a subentire impunctate line. Elytra one-fourth longer than 

 wide, a little wider than the prothorax and not distinctly more than 

 twice as long as the latter, striate and subimpnnctate as in ater. 

 Under surface, except along the middle of the abdomen, and also 

 the legs throughout deeply, densely punctate and opaque. Length 

 2.T mm.; width 1.2 mm. 



The two specimens in my cabinet are from Illinois, and are not 

 as large as the type measured by LeConte (3.0 mm.). 



DESMOGL1PTUS n. gen. 



This genus is closely allied to Pseudobaris and has the prosternum 

 deeply and abruptly sulcate throughout its length, the anterior coxae 

 being somewhat remote and separated by fully their own width. 

 The beak, antennae, tarsal claws and scutellum are also nearly as 

 in Pseudobaris, but the other characters are so different that the 

 unique species cannot be appropriately associated with the mem- 

 bers of that genus. 



The general appearance and elytral sculpture are essentially un- 

 like anything else in the present tribe which I have been able to 

 study, but it is possible that the Baridius cribratus of Boheman 

 may be somew T hat similar, or perhaps even congeneric. The form 

 of the body reminds us strongly of Copturus, and the opaque sur- 

 face, deep impressed and strongly crenulate striae, with narrow and 

 convex intervals, together with the unusually prominent subapical 

 umbones, are a combination of characters apparently isolating the 

 genus widely from its allies. It should be stated, however, that 

 the peculiar outline is feebly suggested in Pseudobaris angusta. 



Desmoglyptus differs from Pseudobaris radically, also, in the for- 

 mation of the pygidium and elytral apices, the latter being deeply 

 and vertically truncate or deflexed, covering a large part of the 

 pygidium, which is small, vertical and flat. In Pseudobaris the 

 pygidium is large, convex and prominent, the elytra being normal 

 at apex and leaving it completely exposed. In Desmoglyptus the 

 third tarsal joint is abruptly very large, but not quite as wide as 



