This paper reports a new species of genus Sinoennea Kobelt in China: Sinoennea shizhongshanensis sp. nov. The morphological characteristics of the new species were described in detail, and radula was observed with scanning electron microscope. The new species was compared and discussed with related species. The materials were collected from Shizhongshan scenic spot, Hukou county, Jiangxi province of China in 2013. The type specimens had been deposited in the College of Life Science and Food Engineering, Nanchang University, Nanchang, China, and the Institute of Zoology, Chinese Academy of Sciences, Beijing, China.

Sinoennea shizhongshanensis sp. nov. (Plate, 1~5)

Holotype, alt．5.50 mm, diam．2.50 mm；alt．of aperture1.90 mm，diam．of aperture1.40 mm；collected from Shizhongshan scenic spot, Hukou county (29°44.764’N, 116°13.082’E), Jiujiang city, Jiangxi province, China, May 20, 2013．

Paratypes, 25 specimens, alt．5.20~6.00 mm, diam．2.50~2.70 mm；alt．of aperture 1.70~2.00 mm，diam．of aperture 1.40~1.70 mm. Collected from Shizhongshan scenic spot, Hukou county, Jiujiang city, Jiangxi province, China, May 20, 2013．

Shell small, thick, solid, lustrous, smooth, ovate-cylindrical. Apex blunt and short, shells light yellow or yellow-brownish in colour, with deep suture．Whorls 8, moderately convex with high spiral part．Top two whorls smooth, following ones with some curve vertically rib-striae. The last whorl is not inflated,it gradually narrowed and lessened near aperture, with 33 rib-striae. Aperture small, heart-shaped. The peristome thick, expanded and reflexed, with 1 big, right bending, flake-form angular lamellae at inner lip, with two nipple-formed teeth in outer lip, connected from shallow to deep which were hard to distinguish. Slightly deep at the bottom of the aperture, there is a big lump-form palatal tooth along the palate with a slender pleat above it. The columellar lip and outer lip are perfectly straight. Umbilicus wide, deep, cavernous．

Radula (Plate, 6~7). Teeth arranged in anteriorly V-shaped rows, each row containing 27~29 teeth with the formula (13-14)-1-(13-14); central tooth small, sharp, triangular with pointed cusp; lateral and marginal teeth undifferentiated, unicuspid and lanceolate; lateral teeth gradually reduced in length and size, outer teeth much smaller and shorter than inner teeth.

Habitat. Usually live in dark and damp limestone mountains and foothills with many humus, often perched under broad-leaved forest, loose and fertile soil, limestone cliff surface or crevices.