WICKHAM: FOSSIL ELATERIDAE OF FLORISSANT. 52D 
gate punctures separated in the series by something more or less than 
their own diameters. Underside showing that the prosternum is 
strongly, closely and rather coarsely punctured around the anterior 
portion of the lobe, nearly smooth at middle, side pieces vaguely 
punctate, abdomen thinly pubescent, the punctuation fine, shallow 
and sparse. Legs poorly preserved, of moderate size. Length, from 
front of head to abdominal apex, 13.50 mm.; of elytron, 9.45 mm.; 
of prothorax, along median line, 2.45 mm.; width of prothorax across 
base, just in front of hind angles, 3.35 mm. 
Described from one specimen, with counterpart. 
Type.— In the Museum of the University of Colorado. It was col- 
lected by G. N. Rohwer, at Station 14, Florissant, Colo. 
Easily distinguished from the other Florissant fossil Corymbites 
by the short prothorax and widely divergent hind angles which give 
the appearance of the recent C. appressus from the northern United 
States and Canada. That species, however, has the prosternum and 
elytra differently sculptured. The prosternal, coxal, and antennal 
characters of the fossil all agree well with the genus in which it is 
placed. 
CORYMBITES RESTRUCTUS, sp. Nov. 
Plate 7, fig. 4. 
Form fairly elongate, tapering to the ends as in the recent C. hiero- 
glyphicus. Since the specimen is exposed in ventral view, no de- 
scription of the upper surface can be given. Head poorly preserved, 
antennae not shown. Prothorax rather closely and fairly coarsely 
punctured beneath, more deeply and strongly on the prosternum, 
spine margined at sides, lobe much rounded, hind angles long and 
acute, slightly diverging. Metasternal and abdominal punctuation 
much shallower and more vague than that of the prothorax. Hind 
leg moderately long, the first tarsal joint not much lengthened, the 
fourth and fifth obscured. Elytra pointed at apex, sides rather 
strongly rounding. Length, from front of head to abdominal apex, 
but without extruded sex organ, 16.30 mm. 
Described from one specimen. 
Type.— In the Museum of the University of Colorado. It was col- 
lected by Mrs. W. P. Cockerell at Station 14, Florissant, Colo. 
Undoubtedly a Corymbites and easily distinguished from C. primi- 
tivus or C. granulicollis by its smaller size and more fusiform outline. 
