WICKHAM: new MIOCENE COLEOPTERA from FLORISSANT, 485 



have been entirely unable to find any modern insect with antennae of 

 the type shown by the fossil. The sculpture is obscure but there is no 

 sign of striation or heavy punctuation on any part of the body. 



Ephalus adumbratus Scudder. 



The reverse of the specimen which served as the type for Scudder's 

 figure is in the series transmitted to me. It is No. 2,679 M. C. Z. 

 (No. 6,469 S. H. Scudder Coll.). 



CISTELIDAE. 



Cistela vulcanica, sp. nov. 



Plate 14, fig. 5. 



Form elongate oval. Head exposed, projecting, a little wider than 

 long, mandibles only slightly prominent. Eyes not well defined but 

 what remains indicates that they were rather small and widely sepa- 

 rated on the vertex. Antennae long and slender, only very feebly 

 serrate basally, reaching nearly to the middle of the elytra, the second 

 joint short, those following the third subequal in length, each more 

 than twice as long as wide. Prothorax, as preserved, considerably 

 more than twice as wide as long, sides in rather poor condition but the 

 better preserved one indicates that they were gradually rounded from 

 the broad base to the much narrower apex. Scutellum subcordiform, 

 small. Elytra a little less than four times the prothoracic length, 

 rounded at apices. Legs not displayed. Length, to elytral tip, 14 

 mm.; of elytron, 10.35 mm. 



Described from one specimen with counterpart. 



Type.— No. 2,680, 2,681 M. C. Z. Florissant, Col. (No. 416 and 

 418 S.H. Scudder Coll.). 



The entire upper surface is finely sculptured and clothed with 

 rather close- short hairs. The insect looks a good deal like the 

 Florissant fossil C. antiqua but has longer and more slender antennae. 

 It seems that the two are probably congeneric and may possibly 

 represent the two sexes of a single species. 



