WICKHAM: fossil ELATERIDAE of FLORISSANT. 495 



sant district, the only North American Tertiary Elateridae thus far 

 made known are these: — 



Green River, Wyo. Oligocene. 



Corymbites velatus Scudd. 



White River, Colorado-Utah. Oligocene. 



Epiphanis deletus Scudd. 



Fossil, Wyo. Oligocene. 



Adocetus buprestoides Scudd. 



Similkameen River, B. C. Miocene. 



Limonius impunctus Scudd. Elaterites sp. 



Nicola River, B. C. Miocene. 



Cryptohypnus (?) terrestris Scudd. 



These five records (since that of Elaterites cannot be considered as 

 having any special value) are even less illuminating than those of 

 Europe. Three of the genera are now recognized from Florissant. 



Years ago, Scudder announced that he had about forty species of 

 Florissant Elateridae but he never gave them detailed study and it is 

 probable that the number was somewhat overestimated. At any 

 rate, when I looked through his collections in 1912 I was unable to 

 distinguish so many and of those in his cabinet a good proportion was 

 too poor for identification. Later explorations have brought in about 

 as many specimens as were known to Scudder and by a study of the 

 material belonging to the Museum of Comparative Zoology, the 

 United States National Museum, the Princeton University Geological 

 Museum, the Museum of the University of Colorado and the Peabody 

 Museum of Yale University, supplemented by a collection of my own, 

 I have separated forty-three species with some degree of certainty 

 as to their generic and specific affiliations. For convenience in making 

 comparisons, this list is appended. Excepting four which I have 

 described in earlier papers, all are new and are characterized in the 

 body of this article. 



Eucneminae. 



Eucnemis antiquatus. Microrhagus miocenicus. 



Deltometopus fossilis. Microrhagus vulcanicus. 



Fornax relictus. 



