504 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
C. cardisce, but seems to be a little more coarsely punctured on the 
prothorax. It is smaller than the Florissant species C. lithographus 
and C. florissantensis, and much less coarsely punctured than the 
fossil Horistonotus coloradensis from the same shales. 
CARDIOPHORUS REQUIESCENS, sp. nov. 
Plate 2, fig. 7, 8. 
Form fairly elongate. Head minutely and closely punctulate. 
Antennae wanting. Prothorax too badly damaged for description of 
the form, punctuation sparse and fine. Scutellum cordiform. Elytral 
striae extremely fine, the punctures shallow, somewhat elongate and, in 
general, separated by several times their own diameters. Underside 
nearly smooth, the visible punctures being sparse and small. Length, 
from front of head to elytral apex, 6.65 mm.; of elytron, 4.15 mm. 
Described from one specimen. 
Type— In the collection of H. F. Wickham. Wilson Ranch, 
Florissant, Colo. 
This seems to separate easily from the other Florissant fossil 
Cardiophori by the finer sculpture and especially in the distant strial 
punctures. The generic reference is plainly indicated by the form 
of the prosternal spine and of the scutellum. 
CARDIOPHORUS (?) DEPRIVATUS, sp. nov. 
Plate 2, fig. 9, 10. 
Form stout. Head not visibly punctured. Antennae apparently 
with the second joint hardly shortened, the third a trifle shorter than 
the fourth, the following, up to and including the tenth, subequal and 
only faintly serrate. Prothorax scarcely at all punctulate, about 
one third wider than long, sides regularly and not strongly arcuate, 
the angles not prominent. Scutellum a little elongate, pointed at 
tip but not strictly cordiform. Elytra hardly three and one third 
times as long as wide, rather strongly tapering, apices conjointly 
rounding, surface without sculpture. Underside practically smooth 
throughout, prosternal sutures curved, convex inwards, metacoxal 
plates suddenly narrowed externally. Length, from front of head 
to elytral apex, 5.15 mm.; of one elytron, 3.50 mm. 
