606 Coleopterological Notices, IV. 



Florida (New Smyrna and Biscayne Bay). Apparently not un- 

 eommon and belonging to the subtropical fauna of the peninsula. 

 The allusion in the original description to whitish hairs on the 

 elytra is inexact. 



MICROCHOLVS. 



LeConte— Proc. Am. Phil. Soc, XV, p. 303. 



This isolated genus is characterized by a broad, moderately con- 

 vex body, with normally striate elytra, an unimpressed prosternum, 

 non-tubulate prothorax and small tarsal claws, and differs greatly 

 from Oomorphidius, under which name I have separated two of 

 the species assigned to it by its author, in several important charac- 

 ters as given in the table. 



The mandibles are rather long, prominent, feebly arcuate in ex- 

 ternal outline, scarcety at all or feebly decussate when closed, and 

 much more angulate anteriorly in this state than in Oomorphidius 

 and Eisonyx. In fact in this and several other ways, Microcholus 

 forms a tolerably satisfactory intermediate between the genera men- 

 tioned and Centrinus. 



The two species at present known should be separated subgene- 

 rically as follows : — 



Subgenus I. 



Beak compressed toward base, minutely, feebly punctate even at the sides, 



the apex flattened and subdilated ; scutellum rather large, elongate-oval 



and tumid ; elytral striae much coarser, impunctate ; tarsal claws very 



stout; integuments nearly glabrous above ...1 StriatllS 



Subgenus II. 

 Beak cylindrical, neither compressed toward base nor flattened at apex ; 

 scutellum very minute, triangular ; elytral stria? fine, remotely punc- 

 tate; tarsal claws very small but slender; integuments rather densely 

 but unevenly squamose 2 puiicticollis 



In general outline of the body 31. puncticollis almost perfectly 

 resembles Simocopis umbrina Pasc. ; the beak is however quite 

 different. 



I. 



1 Microcliollis StriatllS Lee— Proc. Am. Phil. Soc, XV, p. 304. 



Broadly oblong-oval, moderately convex, black, the legs rufo- 

 piceous ; pronotum polished, the elytra slightly alutaceous ; integu- 

 ments almost glabrous above, with a cluster of large white scales 





