_Body_ pale yellowish-brown, hairy; _feet_ paler, whitish, first pair smallest, fourth pair largest and longest; _abdomen_ livid, hairy, sub-depressed; _palpi_ more robust than the three anterior pairs of feet, of subequal diameter, but rather thicker towards the tip; more hairy than the feet; _eyes_ and _tubercle_ blackish; _mandibles_ dilated, with numerous rigid setæ, and with parallel setæ projected over the fingers; _fingers_ regularly arquated, reddish-brown at tip, and with a reddish-brown line above and beneath, within armed with many robust teeth; thorax with a deep sinus at the anterior angles. 2. G. _subulata_, SAY.—Hairy; _mandibles_ horizontal; _thumb_ nearly rectilinear, destitute of teeth. This species has the strongest resemblance to the preceding, both in form, magnitude, and colouring; but the superior finger of the mandibles is unarmed, and rectilinear or very slightly flexuous; the inferior finger is arquated, with about two robust teeth.—JAMES. About the sandstone ledges we collected a geranium[142] intermediate between the crane's-bill and herb-robert, the beautiful calochortus (C. elegans, Ph.) and a few other valuable plants. [142] G. _intermedium_, I.—Cespitose, sub-erect, pubescent, sparingly branched above. Radical leaves reniform deeply 5/7 cleft. The flower is a little larger than that of G. _robertianum_, and similarly coloured, having whitish lines towards the base of the corolla. We also saw here the Campanula _decipiens_, _Tens_. Lysimachia _ciliata_, Ph. Troximon _glaucum_, N., with two or three belonging to Geneva, with which we were unacquainted.—JAMES. The Platte, at the foot of the mountains, is twenty-five yards wide, having an average depth of about three feet, its water clear and cool, and its current rapid. Its descent for twenty miles below cannot be less than ten feet per mile. Its valley is narrow and serpentine, bounded by steep and elevated hills, embosoming innumerable little lawns, often of a semicircular form, ornamented by the narrow margin of shrubbery along the Platte. The narrow valley between the ridges of sandstone is a little more fertile than the plains along the river. It is covered with fine and short grasses, and is varied with here and there a copse of small oaks or hazels. There are also some columnar masses of white sandstone, twenty or thirty feet high, standing remote from each other, having the _débris_ around their bases covered with shrubby oaks. As we were passing near one of these, an uncommonly large and beautiful buck deer sprung out from the bushes, and stood gazing on us, until he received in his side the ball, which brought him instantly to the earth.