14 TERTIARY COLEOPTERA OF NORTH AMERICA. 



Antenuse nearly as louo- as the elytra, with the basal three joints larger and 

 more rounded than the succeeding ; but the preservation does not permit 

 of noting what joints were glabrous. Pronotura subquadrate, broadest in 

 the middle, tapering gently in front, rapidly behind ; front margin broadly 

 convex with no median excision, the lateral angles well rounded ; posterior 

 border produced somewhat, roundly angulate, the disk strongly depressed 

 in a longitudinal mesial band, broadening anteriorly ; lateral margin simple. 

 Elytra very regularly ovate, nearly twice as broad as the pronotum, 

 broadest a little behind the middle, the strife, apparently to the number of 

 about a dozen on each elytron, similar and slightly impressed, the outer 

 border narrowly margined. 



Length to tip of maxillge., 7 mm.; breadth across elytra, 3 mm.: length 

 of antennge, 3.5 mm. 



Florissant, Colorado, one specimen. No. 12086. 



NEOTHANES Scudder. 



An extinct genus, founded upon the present species, allied to Carabus. 

 The species was formerly referred by me to Cychrus, but evidently belongs 

 to the Carabini. The genus is described in my Tertiary Insects. 



Neothanes testeus. 



PL I, tig. 5. 



Cychrus testeus Scudd., Bull. U. S. Geol. Geogr. Surv. Terr., IV, 758-759 (1878). 

 JSTeothanes testeus Scudd.. Tert. Ins. N. A., 535-536, pi. VII, figs. 32, 39 (1890). 



Green River, Wyoming. 



CARABUS UnnL 



A widespread genus, prolific in species, found in the north temjjerate 

 regions and in a few south temperate districts. Three of the existing- 

 European species have been reported from the Pleistocene of Switzerland, 

 England, and Poland, and as many more extinct species from the Pleisto- 

 cene of Poland. Omboni also figures a species from the marls of Italy. 

 But excepting that the genus has been recognized in amber, no species but 

 that here described has been noted ivom. the earlier Tertiaries. 



