WICKHAM: FOSSIL ELATERIDAE OF FLORISSANT. 503 
by G. N. Rohwer at Station 13, Florissant, Colo.; with it are 
associated a specimen, with counterpart, found by S. A. Rohwer and 
one found by Mrs. W. P. Cockerell at the same place; five examples 
in the collection of the U. S. National Museum; and No. 2,771-2,774 
M. C. Z. (No. 84, 2,094, 12,421, 12,425 S. H. Scudder Coll.). 
Larger than C. lithographus (p. 501), but otherwise similar. I do 
not think there is any doubt of the specific distinctness of the two. 
The coxal plates, as shown, look quite different but I am afraid to 
depend entirely upon these as the edges, may become broken and 
change the apparent form. 
CARDIOPHORUS COCKERELLI, sp. nov. 
Plate 2, fig. 6. 
Form stout. Head minutely, obscurely punctured, antennae 
wanting. Prothorax nearly one and one third times as broad as long, 
not much narrowed anteriorly, sides strongly rounded, hind angles 
short but prominent, carinate, basal sinuations pronounced, surface 
rather densely and more strongly and coarsely punctured than the 
head. Scutellum apparently imperfect, pointed behind.  Elytra 
short, broad, somewhat obtusely conjointly rounded apically, surface 
striate, the striae moderately deep, their punctures strong, rounded 
or a little elongate, close-set, separated ordinarily by less than their 
own diameters, interspaces broad, flat, roughened somewhat but not 
distinctly punctured. The entire upper surface of the prothorax and 
elytra shows signs of rather fine pubescence. Length, from front of 
head to elytral apex, 6.20 mm.; of elytron, 3.85 mm. 
Described from one specimen. 
Type.— No. 2,765 M. C. Z. Florissant, Colo. (No. 1,916 S. H. 
Scudder Coll.). With it are associated No. 2,766-2,767 M. C. Z. (No. 
6,379, 10,639 S. H. Seudder Coll.); and three specimens, two with 
counterparts, in the Museum of the University of Colorado, all from 
Station 14, bearing the numbers 151, 178 and 179, 209 and 258. 
No. 2,768-2,770 M. C. Z. (No. 7,476, 9,160, 12,041 S. H. Scudder 
- Coll.) probably belong here. 
The underside is not shown in the type, but the specimen No. 2,767 
M. C. Z. (No. 10,639 S. H. Scudder Coll.), displays it well, exhibiting 
moderately curved prosternal sutures, truncate spine and nearly 
smooth surface. This beetle is similar to the recent North American 
. 
