326 MEMOIRS ON THE COLEOPTERA 



scutellum equilatero-triangular, deep black, finely punctate, with a 

 smooth median line; elytra but slightly more than twice as long as wide, 

 slightly narrowed from base to the broadly rounded apices, each of which 

 has a short, very feeble truncature at some distance from the suture; 

 fifth ventral short, extremely broadly, rectilinearly truncate; legs and 

 tarsi slender. Length 16.0 mm.; width 5.3 mm. Honduras. 



I have been unable to find any description agreeing with the 

 single type of this apparently distinct species and therefore conclude 

 that it is nondescript; it h dedicated to our late distinguished com- 

 patriot. 



The genera allied o Batyle and Ischnocnem : s, having the meso- 

 sternum feebly convex and simply declivous anteriorly and the 

 hind tarsi long, so far as known to me at present, are defined in the 

 following table. Mannophorus Lee., and Muscidora Thorns., are 

 closely allied to them, having ver much the same habitus, Musci- 

 dora tricolor and Parabatyle sanguiniventris (Entomosterna) being in 

 fact extremely alike and with similar mesosternal structure, but 

 differ radically in the short hind tarsi, which are as in Sphcenothecus 

 and allied genera: 



Elytra even on the disk, without trace of costse 2 



Elytra costate 4 



2 Antennae in the male much longer than the body; facies as in Batyle, 

 the elytra truncate and externally spinulose at apex, evenly and 

 closely punctured; hind thighs (cf) extending beyond the elytra, 

 shorter (9). [Type Entomosterna sanguiniventris Chev.]. Mexico. 



*Parabatyle 



Antennae not longer than the body; elytra rounded broadly at tip 3 



3 Scutellum transverse, obtuse at apex; elytra closely punctate, without 

 long erect hairs; body bicolored. [Type Call idi um ignicolle Say]. 



Temperate North America Batyle 



Scutellum narrow, acutely triangular; elytra very sparsely and coarsely 

 punctate and with long sparse erect hairs, more inclined posteriorly; 

 almost the entire body very pale in color, polished. [Type Calli- 



dium suturale Say]. Temperate North America Batyleoma 



4 Elytral costse single on each elytron, not differing in color from the 

 ground; prothorax as long as wide or longer, much narrowed ante- 

 riorly, generally red; elytra usually black, truncate and externally 

 angulate or spinulose at apex as in Entomosterna; legs and antennae 

 very slender, the latter a little longer than the body (cf ). [Type 



Entomosterna prolixa Bates]. Mexico *Stenobatyle 



Elytral costae almost invariably pale and ivory-like 5 



5 Elytra each with a single costa. [Type assumed E. unicostata 



n. sp.]. Mexico *Entomosterna 



Elytra each with two costae. [Type I. tripnnctata Thorns.]. Mexico. 



*Ischnocnemis 



