June 1900.] Casey : Ox North American Coleoptera. 87 



4 — Prothorax triundulate at the sides — at the apex and near apical and l^asal third, — 

 the undulations similar among themselves, the apical angles not more thickened ; 

 elytral suture feebly margined toward tip. 



Body short, broadly oval and convex, with long herissate vestiture, the pro- 

 thorax finely bifoveate at base, the fovex connected by a fine deep trans- 

 verse impression, the disk also having a fine cariniform line at each side at 

 some distance from the side margin and parallel thereto ; lateral undula'ions 

 moderate in development, rounded and finely serrate ; eyes very small and 



extremely prominent Crosimus 



Body elongate and less convex, clothed with denser, shorter and more de- 

 cumbent pubescence as in Cryptophagus, the prothorax without a sublateral 

 line, having two small basal fovese connected by a very feeble and broadly 

 impressed line, the lateral undulations simple but very prominent and denti- 

 form ; eyes as in Cryptophagiis Salebius 



Prothorax with thickened and obliquely truncate apical angles, the edge even, ex- 

 cepting a minute acute tooth at about the middle and sometimes minute serrula- 

 tions thence to the basal angles, the basal foves very small and feeble, connected 

 by a fine feeble impression along the basal margin, the apex truncate or feebly bi- 

 sinuate ; elytral suture only margined posteriorly. [Subgen. Mnionomus Woll.] 



Cryptophagus 

 Prothorax with thickened and obliquely truncate apical angles, the edges thence 

 evenly, feebly arcuate, slightly converging and evenly, finely serrulate to the 

 base, the basal fove.^ distinct and mutually connected by a larger deep basal im- 

 pression ; elytral and other characters nearly as in Cryptophagus *Micrainbe 



Prothorax not thickened at the apical angles or undulated at the lateral edges, the 

 latter perfectly even from apex to base and serrulate ; elytral suture margined 

 very nearly to the scutellum 



Body oval, convex, coarsely sculptured and pubescent, the prothorax with two 

 small but deep basal foveoe connected by a very deep and conspicuous 

 groove ; serralation of the lateral edges more or less coarse and distinct. 



Henoticus 



Body oblong, parallel and strongly depressed, finely, more closely sculptured 



and pubescent, the prothorax with two very small but distinct basal fovese, 



the connecting impression or groove wholly obsolete ; lateral edges very 



minutely serrulate Ptcr yngiu m 



The definition oi Eiiiphyliis is taken from the Europern glabei-, and, 

 as I have not seen the American representative — americamis Lee, of 

 the catalogue, — the genus will not be further dwelt upon ; its affinity 

 with AntJieropliagiis is much more pronounced than with Cryptopliagits, 

 and the sinuation of the thoracic apex — due to the prominence of the 

 apical angles — which has been hitherto advanced as a differential 

 character, is one of the least important. 



Antherophagus Latr. 

 This is one of the most isolated genera of the family and contains 



