448 bulletin: museum of comparative zoology. 



joint is very small and frequently needs careful examination for de- 

 tection. Quite possibly the fossil represents a genus in a transition 

 stage, where the reduction of this joint and the increase in size of the 

 third is not yet pronounced, but I do not care to separate it from 

 CoUops upon this rather dubious character. Compared with C. 

 prisons, the present species is considerably larger, the elytra being 

 1 mm. longer, and apparently much less hairy. The lines on the 

 elytra are probably wing veins showing through. Three other speci- 

 mens, assigned here after the above description was written, all have 

 the upper surface of the body better preserved, although the append- 

 ages are poor. These additional examples, No. 2,513-2,515 M. C. Z. 

 (No. 8,503, 10,710, 14,319 S. H. Scudder Coll.), indicate that the head 

 and prothorax are rather shining, the elytra more strongly so, elytral 

 surface finely irregularly punctate and distinctly hairy. 



CLERIDAE. 



Enoclerus florissantensis, sp. nov. 

 Plate 5, fig. 8. 



Form moderately elongate. Head large, as wide as the pronotum, 

 sculpture nearly effaced but what remains indicates it to have con- 

 sisted of a fine punctuation. Prothorax broader at apex than at base, 

 widest well in front of the middle, sides, judging by the better pre- 

 served one, gently arcuate, base with a fairly well-defined collar or 

 constriction, surface with poorly defined punctuation and with traces 

 of hairs. Elj^tra narrow in the humeral region, humeri rounded, 

 surface obscureh^ punctate and hairy with a few traces of fine lineation, 

 apices broken off. Legs only fairly stout. Length of fragment, 

 9 mm. ; in life probably about .75 mm. more. 



Described from one specimen in somewhat unsatisfactory preserva- 

 tion. 



Tifpe.— No. 2,516 M. C. Z. Florissant, Col. (No. 9,889 S. H. 

 Scudder Coll.). 



The relatively narrow humeri give this insect somewhat the 

 aspect of the recent E. rosmarus but the fossil is much greater in 

 size. The clothing of hair is poorly preserved and visible only in 

 spots. The punctuation is not well enough defined for accurate 

 description. 



