CHRYSOMELID^E. 109 



Cryptocephalus vetustus. 



Cryptocephcduv ivtiistus Scudd., Bull. U. S. Geol. Geogr. Surv. Terr., IV, 764 (1878); 

 Tert. Ins. N. A., 48.5-486, pi. 7, figs. 29, 37 (1890). 



Green River, Wyoming. 



CRYPTOCEPHALITES Scudder. 



This genus was founded by me for the fossil species here recorded, 

 which is a pecuhar form of the tribe Cryptocephalini. 



Cryptocephalites punctatus. 

 C'ri/ptocephalites jjimctattcs Scudd., Contr. Cauad. Paleeont., II, 33, pi. 2, fig. 4 (1892). 

 Similkameen River, British Cohimbia. 



COLASPIS Fabricius. 



This is an American and Polynesian genus, with many species, less 

 than half a dozen of which inhabit the United States. A single fossil species 

 is known from Colorado. 



CoLASPIS LUTl. 



Colaspis luti Scudd., Tert. rhynch. Col. U. S., pi. 1, fig. 4 (1892). 



Head very finely rugose, with a large subcircular eye. Prothorax 

 verv delicately and rather densely punctate, tapering but little, and 

 apparently much narrower at base than the elytra. Elytra with equidistant 

 punctured stria?, the punctures rather large, rather closely crowded, rather 

 deep and circular. Under surface of thorax feebly rugose, of abdomen 

 smooth. 



Length, 5 mm.; breadth, 2 mm. 



Florissant, Colorado; one specimen, No. 7670. 



CHRYSOMELA Linn*^. 



A very dominant cosmopolitan genus, with numerous North American 

 species. A single fossil American species occurs in Colorado, but in the 

 older Tertiaries of Europe there are at least nine species, found at Aix, at 

 Oeningen, and in amber; besides which two species, one of them extinct, 

 occur in the Pleistocene of Galicia. 



