The shell of Pommerhelix monacha is subglobose (almost round).[4] The shell has 5.6–6.0 whorls. The color of the shell is dark brown to black,[4] but it can also be dark red or purple in colour.[6] The shell sculpture consists of zigzag ridges combined with small ridges on the periostracum.[4] The umbilicus is closed.[4] The aperture is roundly ovate in shape.[4]
The width of the shell is 26.2-30.3 mm.[4] The height of the shell is 18.1-23.2 mm.[4]
The visible soft parts are a yellowish grey in colour:[6] the body is grey to dark grey[4] and the mantle is dark yellow or orange.[4]
An apertural view of a shell of Pommerhelix monacha
An umbilical view of a shell of Pommerhelix monacha
^Tryon G. W. (1887). Manual of Conchology, structural and systematic, with illustrations of the species. Second series: Pulmonata. Volume 3. Helicidae - Volume I., page 216, plate 50, figs. 27-28.
^ abMichael Shea, Australian Museum, personal communication.
Mclauchlan, C. F. (1954). Three new land shells from New South Wales. Australian Zoologist. 12: 39.
Clark, S.A. (2009). A review of the land snail genus Meridolum (Gastropoda: Camaenidae) from central New South Wales, Australia. Molluscan Research. 29(2): 61–120.
