Descriptions of Nine New Species of Helix Inhabiting California.
BY W. NEWCOMB, M.D., OF OAKLAND, CAL.
Helix L.
Helix Hillebrandi Newc.
H. testa supra planulata, luteo-cornea, sub-carinata, fasciis albis bi-cingulata, sub-lente crebre granulata, hirsuta; anfractibus 6 undique minute striatis, striis oblique transversis; anfr. ultimo descendente; umbilico late-aperto; apertura lunari-ovale; peristomate tenuo, albo, reflexo, prope umbilicam expanso.
Lat. maj. 0.9, min. 0.8 pol. Alt. 0.35 pol.
Hab. Tuolumne County, California.
Shell sub-planulate above, yellowish horn color, sub-carinate, under the glass thickly granulate, hairy(?); whorls 6 very finely striate, striæ obliquely transverse; the last whorl descending; umbilicus broadly open; aperture lunate oval; lip thin, white and reflected, near the umbilicus expanded.
Remarks.—But one recent specimen, with a number in a fossil state, were collected by M. Voy and kindly placed in my hands. The granulated surface is confined to the epidermis, and the summit of many of the granules is marked with a cicatrix indicating a hirsute character. The nearest allied species is H. Dupetit-Thouarsi, from which it differs in its more depressed form and surface structure. It is dedicated to Wm. Hillebrand, M.D., of Honolulu, a well-known naturalist.