70 TERTIARY COLEOPTERA OF NORTH AMERICA. 



HLKDIUS Leach. 



A cosmopolitan, but prevailingly north temperate genus with numerous 

 species, of which more than forty are North American. In the earlier Ter- 

 tiaries of Europe a species lias been described from Oeningen, another (as 

 a Stenus) from Aix, and the genus has been recognized in amber. In North 

 America half a dozen species are described from Colorado and Wyoming, 

 and besides these, one from the Pleistocene of Canada. 



Two of the species from Florissant placed in this genus are remarkable 

 for the uniform, close, and coarse granulation covering alike head, thorax, 

 elytra, and abdomen, a peculiarity which seems to bring them nearest the 

 <ini/(iti<s group of our living American forms, though in none of these, so 

 far as I have seen them, is the abdomen closely granulate. With them 

 agrees very well the Stew us prodromus Heer from Aix, which 1 am strongly 

 inclined to think should be regarded as a Bledius. A third Florissant speci- 

 men agrees still better with the same armatnt> group, the granulations of the 

 abdomen being comparatively infrequent, but in the coarse and heavy 

 antenna*, with no slender joints near the base, it departs altogether from any 

 Bledius I have seen. In the fourth Florissant species and the two from 

 Green River the granulation is feeble and sparse everywhere or wanting, 

 and seems in all to be almost altogether or wholly wanting on the abdomen, 

 though one of the Green River specimens still seems to belong to the armatxs 

 group, while closely resembling the fourth Florissant species in the form 

 of the prothorax.. In all, so far as can be seen, the antenna? are unusually 

 short. 



BLKDIUS GLACIATUS. 



Bletl'mx <jl<i<-nthix Scucld.. 'IVrt. Ins. N. A., 505, pi. 1. %. : J >5 (lN!u); t'ontr. Caimd. 

 I'sibi-ont..!!, 48 (1X!C>). 



('lav beds ot Scarlioro, Ontario. 



BLEDIUS MORSEI sp. nov. 

 I'l. VII!. tio-. s. 



Both specimens referred here are preserved on a side view, so that 

 tin- species can not be so well characterized as if the upper surface were 



shown. The head is coarsely granulate excepting 1 on the neck below, where 



it is marked with exceedingly' delicate, transverse, broken striation or comb- 



