Pommerhelix monacha

The shell of Pommerhelix monacha is subglobose (almost round).^[2] The shell has 5.6–6.0 whorls. The color of the shell is dark brown to black,^[2] 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.^[2] The umbilicus is closed.^[2] The aperture is roundly ovate in shape.^[2]

The width of the shell is 26.2-30.3 mm.^[2] The height of the shell is 18.1-23.2 mm.^[2]

The visible soft parts are a yellowish grey in colour:^[6] the body is grey to dark grey^[2] and the mantle is dark yellow or orange.^[2]

• 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.

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• Pfeiffer, L. (1859). Descriptions of twenty-seven new species of land-shells, from the collection of H. Cuming, Esq. Proceedings of the Zoological Society of London. 27 (385): 23–29, pls 43–44. London
• Crosse H. (1864). Diagnoses de mollusques terrestres nouveaux. Journal de Conchyliologie. 12(3): 282-286