22 TERTIARY RHYNCHOPHOROUS COLEOPTERA. 



Trypanorhynchus corruptivus. 

 PI. IV, Fig. 7. 



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 

 granulose, 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 striae. 



Length over the back from tip of rostrum to tip of elytra, 12"°"'; height 

 of body, 3-0""". 



Florissant, Colorado. Five specimens, Nos. 8342 and 8617, 11250, 

 11275, 13636, 13658. 



Trypanorhynchus depratus. 



PI. IV, 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 moi-e elongate tJian in T. 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. 



PI. II, Fig. 23. 



The head is strongly arched and very distantly and finely punctate; , 

 eye rather long-oval, tlie lunger axis pointing a little above the rostrum; 



