294 SEBBICORNIA. 



on the American continent ; it appears to be a common insect in Cuba and Tropical 

 South America. 



2. Dicrepidius corvinus. (Tab. XIIL fig. 9, <$ .) 



Dicrepidius corvinus, Cand. Monogr. Elat. ii. p. 145 . 



Eab. Mexico {Salle 1 ), Tres Marias Is. (Forrer), Ventanas in Durango, Acapulco, 

 Jalapa(i%0), Tuxtla, Vera Cruz (Salle), Temax in North Yucatan (Gaumer); British 

 Honduras, Cayo (Blancaneaux) ; Guatemala (Salle 1 ), Panzos (Champion, Conradt), 

 Teleman, El Keposo, Las Mercedes, Mirandilla (Champion) ; Nicaragua (Salle), Chon- 

 tales (JE. M. Janson). 



We have received about forty specimens of this species. It is included in Henshaw's 

 ' List of the Coleoptera of America north of Mexico,' but I have not seen an example 

 of it from beyond our northern frontier. A male from Ventanas is figured. 



3. Dicrepidius politus. (Tab. XIIL fig. 10, s .) 



Elongate, narrow, cuneiform, black, very shining, sparsely clothed above and beneath with long yellowish- 

 cinereous hairs ; the legs, palpi, and antennae testaceous or rufo-testaceous. Head moderately convex, 

 thickly and rather coarsely punctate, shallowly depressed in front ; antennas very elongate, extending to 

 beyond the middle of the elytra in both sexes — ( S ) strongly flabellate, the rami narrow, increasing in 

 length, the outer ones exceedingly elongate — ( $ ) tapering outwardly, the apical joints narrow. Pro- 

 thorax longer than broad, convex, sinuate at the sides behind the middle ; the hind angles slightly divergent, 

 stout, greatly produced, carinate above, limited internally by a very deep excision ; the base trilobate in 

 the centre ; the surface finely and sparsely punctured, the punctures becoming much coarser and closer at 

 the sides in front, very distinctly canaliculate in the middle behind. Scutellum with a few scattered 

 punctures. Elytra very elongate, narrowing from the base, a little flattened on the disc, subtruncate at 

 the apex ; with rows of rather scattered moderately coarse punctures placed in almost obsolete striae, the 

 punctures becoming very much finer towards the apex, the stria? deeply impressed on the basal declivity ; 

 the interstices almost flat, very sparsely but distinctly punctured. Beneath somewhat thickly punctured, 

 the propleurae, except at the sides, impunctate ; posterior coxal plates broadly triangularly widened near 

 the middle. 



Length 13|-20, breadth 3|-4| millim. ( d ? •) 



Hab. Nicaragua (Salle), Chontales (Belt, E. M. Janson). 



Var. The prothorax coarsely punctured ; the antennal rami slightly stouter. ( c? •) 



Hab. Panama, Bugaba (Champion). 



Eleven specimens, seven of which belong to the typical form. There can be little 

 doubt that the Panama examples represent nothing more than a local form of the 

 same species, though the difference in the punctuation of the thorax is considerable. 

 B. politus may be easily known from B. ramicomis and B. corvinus by the different 

 . form of the antennae in both sexes, the rami being very much longer and narrower, and 

 increasing in length outwardly, in the male, and the antenna itself very elongate and 

 slender in the female ; it also has the head and thorax much more sparsely punctured, 



