22 TERTIARY RHYNCHOPHOROUS COLEOPTERA. 
'TRYPANORHYNCHUS CORRUPTIVUS. 
Play, Wiest 
The head tapers rapidly from the base and is rather heavily and trans- 
versely corrugate, broken into granulations to a slight extent around the 
eyes, which are very regularly broad-ovate, the longer axis at a slight 
angle with that of the rostrum; the latter moderately stout, enlarged in 
the middle of the apical half, a third longer than the head. Thorax heavily 
eranulose, the granules taking on transverse sinuous courses on the sides, 
so as to appear almost more corrugate than granulate, but completely 
irregular above. Elytra with series of punctate striz. 
Length over the back from tip of rostrum to tip of elytra, 12™ height 
of body, 3°5™™. 
Florissant, Colorado. Five specimens, Nos. 8342 and 8617, 11250, 
11275, 13636, 13658. 
TRYPANORHYNCHUS DEPRATUS. 
Pl. rv, Figs. 5, 10. 
Head tapering rather less rapidly than in the other species, but with 
the same transverse corrugations and with the same beads around the eyes; 
these are more elongate than in J. corruptivus, and their longer axis is 
almost or quite identical with that of the rostrum; rostrum slender and 
tapering uniformly throughout, about two-thirds longer than the head. 
Thorax densely granulate throughout, on the sides as above. Elytra ob- 
scure, but apparently as in the other species. 
Length over the back from tip of rostrum to tip of elytra, 9"; 
height, 2.5™™. 
Florissant, Colorado. Three specimens, Nos. 9705, 13596, and, from 
the Princeton collection, 1.867. 
TRYPANORHYNCHUS SEDATUS. 
») Wes (5 ¥0 
Pl. u, Fig. 23. . 
The head is strongly arched and very distantly and finely punctate; 
eye rather long-oval, the longer axis pointing a little above the rostrum; 
