WICKHAM: FOSSIL ELATERIDAE OF FLORISSANT. nar 
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 O. 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. 
