766 BULLETIN UNITED STATES GEOLOGICAL SURVEY. 



to show a lateral view of the insect, appears to indicate an Otiorhynchid 

 allied to OpJiryastes. The form of the elytra, indeed, does not well 

 correspond, since, in place of their abrupt posterior descent, as seen in 

 0. cinereus Schonh. from Mexico, with which it agrees best in general 

 features as also in size, they slope very gradually, and appear to be 

 tumid next the base. But the structure of the stout snout, enlarged 

 apically, with very oblique descending antennal scrobes, the superior 

 transverse furrow at its base giving an increased convexity to the 

 vertex of the head, ally it closely to OpJiryastes. The ovate eye is 

 longitudinal, the front border of the pronotura nearly straight with no 

 advance of the sides, the prothorax itself faintly rugulose, the elytra 

 coarsely striate, the striae with feeble, rather distant punctures (the 

 reverse is shown on the stone) ; the tips of the elytra are right-angled 

 or slightly produced at the extremity, as in recent species. 



Length of body, measured from base of rostrum, 7.5""; height of same 

 3.5"™; length of elytra 5.5"™, of rostrum beyond front of eyes 1.2""; 

 breadth of rostrum at base 0.9"", where largest 1.05""; length of eye 

 0.5""; breadth of same 0.3""; distance apart of the elytral strise 

 0.35"". 



OtiorJiyncJms perditus Scudd., Bull. U. S. Geol. and Geogr. Surv. Terr, 

 ii, 84. — A single specimen was found by Mr. Eichardson ; another, found 

 by myself, is doubtfully referred here, but is so fragmentary as to add 

 nothing to the characters already given. 



Otiorhynchus dublus. — A cast of an elytron (No. 4204) resembles so 

 closely the elytron of the preceding species, excepting in size, that it is 

 referred to the same genus. Only nine strise can be counted, but all 

 of those at the outer side may not be seen; the inner stria is very close 

 to the margin, and indeed is lost in it both above and below, but this 

 may be due simply to the preservation. The stone in which they are 

 preserved is coarser than usual, coming from beds about thirty metres 

 directly below the shales which have furnished the other insect remains, 

 and has a greater admixture of sand; consequently the character of 

 the surface of the elytra cannot be determined, but the strise are sharp 

 and narrow, and filled with longitudinal punctures. With the excep- 

 tion of a couple of poor specimens of JEpiccerus effossus Scudd., this was 

 the only recognizable insect found at this locality. 



Length of elytron 4™™ ; breadth of same 1.5°^°^. 



JEudiagogus terrosus. — This species, which seems more properly refer- 

 able to Eudiagogus than those formerly so named by me, is represented 

 by a single specimen and its reverse (Kos. 4024, 4078), preserved on a 

 side view. The snout is short, as long as the eyes, scarcely so long 

 as the head, and stout ; the eyes transverse, rather large, subreniform. 

 The thorax ajppears to be smooth, like the head, deep and short, its front 

 border extending forward on the sides toward the lower part of the eye. 

 The elytra, the lower surface of which does not appear to be in view, are 

 broad and long, rectangular at tip, furnished with more than eight 



