As Limax fuliginosus Gould:
Body rather short and corpulent, elevated, sharply carinated, especially at its posterior portion. Colour uniform sooty black. Corselet oval, of moderate size, broadest behind, the dorsal face showing traces of a large calcareous test; respiratory aperture situated at the posterior third. Surface coarsely reticulated by oblique fissures, the included areas being more minutely reticulated with smaller fissures. Head small, tentacles rather short, ferruginous at tip. Foot projecting slightly beyond the edge of the mantle, which is transversely and rather distantly lineated. Posterior termination acute. Length two and a half inches. Found at the Bay of Islands, New Zealand, among turnips in a garden. Dr. Pickering remarks that it seems undoubtedly to be a native species. It is specially characterized by its peculiar sooty appearance.