84 UNIVERSITY OF COLORADO STUDIES 



Family NOMADIDAE 

 Nomada (Gnathias) bella callura Cockerell, Proc. U.S. Nat. Mus., XXXLX, p. 657. 



T. 1. West Cliff, Colo. (T. D. A. Cockerell). 

 N. (Gnathias) custeriana Cockerell, Proc. U.S. Nat. Mus., XLI, p. 241. T. I. West 



Cliff, Colo. (T. D. A. Cockerell). 

 N. xantholepis Cockerell, t. c, p. 239. T. 1. Los Pinos, Colo., at flowers of Erigeron 

 (C. F. Baker). 



Family MELECTIDAE 

 Triepeolus rohweri Cockerell, Ann. Mag. Nat. Hist., Nov., p. 668. T. 1. North Boulder 

 Creek, in the Canadian Zone, Aug. 22, 1907 (S. A. Rohwer). 



Family MEGACHILIDAE 

 tLithanthidium pertriste Cockerell, Ann. Mag. Nat. Hist., March, p. 225. T. 1. Miocene 

 shales of Florissant (W. P. Cockerell). The genus also is new. 



Family BOMBIDAE 



Bombus lapponicus flavicollis Friese, Deuisch. ent. Zeltschr., p. 572. T. I. Pike's Peak, 

 Colo. Like B. I. silvicola, but head and thorax all yellow-haired, only the disc of 

 the mesothorax with some black hairs. 



Psithyrus tricolor Franklin, Trans. Amer. Ent. Soc, XXXVII, p. 167. Alaska to 

 Nova Scotia, and in Colorado at Ward (Cockerell) and Pagosa Peak. No type 

 locality is given; Ward is herewith designated as such. I also have a specimen 

 (det. Franklin) collected by S. A. Rohwer at Eldora, at flowers of Gaillardia. This 

 species is described from males, which according to Franklin are probably to be 

 referred to P. fernaldae Franklin. 



Order COLEOPTERA 



Family CARABIDAE 

 fHarpalus maceratus Wickham, Bull. Amer. Mus. Nat. Hist., XXX, p. 54. T. 1. Mio- 

 cene shales of Florissant (W. P. Cockerell). 



Family DYTISCIDAE 

 tMiodytiscus hirtipes Wickham, t. c, p. 54. T. 1. Miocene shales of Florissant (S. A. 

 Rohwer). The genus also is new. The mark "R." on the Florissant fossils, cited 

 by Professor Wickham, refers to the collector, S. A. Rohwer. 



Family PAUSSIBAE? 

 fPaussopsis nearctica Cockerell, Bull. Amer. Mus. Nat. Hist., XXX, p. 71, fig. 1. T. 1. 

 Miocene shales of Florissant (S. A. Rohwer). The genus also is new. 



Family HYDROPHILIDAE 

 fHydrobius prisconatator, Wickham, Bull. Amer. Mus. Nat. Hist., XXX, p. 55. T. 1. 



Miocene shales of Florissant (U. of Colo. Exped.). 



