COLEOPTERA— RHYNCHITID^. 481 



specimens are composed of fragments of elytra, and the only specimens 

 which are preserved entire are such as give a dorsal or ventral aspect. 

 These, however, are enough to show that the}'- belong to a species closely 

 allied to but distiuct from the preceding, differing principally in its smaller 

 size, its slender and more tapering rostrum, the smaller circular eyes, and 

 in the slightly more distant and rather more deeply impressed striae of the 

 elytra. The following measurements will give a better understanding of 

 the degree of difference between them in certain points : 



Length of body exclusive of rostrum, 5"™ ; breadth of same, 2.1'°°' ; 

 width of rostrum at base, 0.48'°°' ; diameter of eyes, 0.28°'°' ; distance apart 

 of the elytral striae, 0.18-0.20°'°'; distance apart of punctures in the striae. 

 0.1 1"". 



Green River, Wyoming. Numerous specimens. 



Family RHYNCHITID^E LeConte. 

 EUGNAMPTUS Schonherr. 



EUGNAMPTOS GRAND 3;VUS. 



PL 8, Fig. 20. 



Sitones grandcevm Scndd., Bull. U. S. Geol. Geogr. Surv. Terr., II, 83-84 (1876). 



A single specimen, very poorly preserved, was found by Mr. Richard- 

 son on Green River, at the crossing of the Union Pacific Railroad, and at 

 the first description of the species this was all that was at hand. Little 

 could be seen in it except a vague outline of the form of the body, with a 

 broken rostrum ; the eye was large, obovate, longitudinally disposed, 0.42""° 

 long and 0.25°°' broad ; the elytra were furnished with a number o^ slight, 

 slender, raised ridges, 0.3 t™" apart, probably the reverses of striae. 



Two more specimens obtained at the same spot by Profs. Packard and 

 Lee, and in better condition, show that it probably belongs to Eugnamptus, 

 though it differs from that genus in the extreme feebleness of the elytral 

 striation which is barely perceptible ; no punctures are discernible, but 

 instead the elytra are sparsely clothed with exceedingl}^ delicate short hairs. 

 The beak is slender and from in front of the eye about as long as the thorax; 

 it, as well as the rest of the head, faintly subscabrous, while the thorax is 

 very delicately and shallowly punctulate, so as to appear almost smooth, 

 with a short delicate hair from each depression. 



VOL XIII 31 



