WICKHAM: fossil ELATERIDAE of FLORISSANT. 527 



ately pointed apically, punctatostriate, the punctures rounded or 

 somewhat elongate and separated in each row by more than their 

 own diameters. Abdomen and legs wanting. Length, from front 

 of head to elytral apex, 6.00 mm. ; of elytron, 3.85 mm. 



Described from one specimen. 



Type.— No. 2,726 M. C. Z. Florissant, Colo. (No. 6,381 S. H. 

 Scudder Coll.). 



A small species, about the size of the recent Californian 0. ater. 

 The form of the prothorax will separate it at once from all the other 

 fossil Florissant Elateridae. 



Melanactes cockerelli Wickham. 



Originally described in the American journal of science, 1908, ser. 4, 

 26, p. 77, fig. 3. The type is in the Peabody Museum of Yale Uni- 

 versity and was collected at Station 14, Florissant, Colo. No other 

 specimens have come to light. It is a large insect, 23.50 mm. in length 

 and similar in general appearance to the Florissant fossil Corymbites 

 granulicollis. 



