It also agrees (except in colour) with Dr. Jay’s description, and also in the very poor figures illustrating the species of H. Perryi. The only question in my mind is one regarding locality.
Helix Cronkhitei, Newc.
Hel. testa aperta umbilicata, depressa, luteo-cornea sub-lente regulariter costulato-striata; spira depressa-convexa; sutura excavata; anfractibus quatuor, sub-cylindraceis; umbilica ampla, sub-perspectiva; apertura rotundata; peristomate simplici, acuto, marginibus conniventibus.
Alt. ·15 pol., Diam. maj. ·2 pol., min. ·15 pol.
Hab. Klamath Valley, Oregon, (Gabb).
Shell openly umbilicate, depressed, yellowish horn colour, under the glass regularly rib striated; spire depressed, a little convex; suture wide and deep; whorls four, rather cylindrical; umbilicus large, indistinctly perspective; aperture rounded; lip simple, acute, margins approximating.
Remarks.—Mr. Bland may possibly refer to this species as H. striatella, Anthony, which was obtained by Dr. Cooper on the Pacific side of the Rocky Mountains. (See addenda to “Remarks on Classification, etc.,” 1863). This species is certainly distinct from striatella, by its smaller size, rib-like costa, and almost channelled suture.
A few specimens were obtained by Mr. Gabb, of the State Geological Survey, in Klamath Valley, which were collected jointly by himself and Dr. Cronkhite, U. S. Army.