72 NILS HJ. ODHNER, MOLLUSCA. 
B. Land and fresh-water Mollusea. 
1. From West-Australia. 
FAM. ENDODONTIDAFE. 
Endodonta (Charopa) tumida n. sp. (PI. 3, figs. 72—74; text figs. 24, 25). 
Shell inflated discoidal, flattened or slightly concave above, deeply and openly umbi- 
licated below, the umbilicus in diameter equalling half the last whorl. Whorls tumid, 
Fig. 24. Jaw of Endodonta tumida n. sp. Fig. 25. Teeth from the radula of E. tumida n. sp. X 1000. 
well rounded, sculptured by dense transverse thread-formed costellae. Last whorl 
not descending in front. Aperture reniform, nearly vertical, with simple lip of slight 
sigmoidal curvature. Colour light reddish brown. Whorls 3'/2. Diameter 3.9, height 
2 mm. Locality: Noonkanbah, Fitzroy River, at the Pandanus Spring, '"/2 1911, 
8 sps. 
The flattened or concave apex and the relatively small umbilicus, as well as 
the size of the shell, distinguishes this species from any known West Australian 
Endodonta (cf. SMITH 1894, HEDLEY 1895). 
The animal lacks a caudal mucus pore; it has a radially grooved jaw (fig. 24) 
and a radula of the formula 12.6.1.6.12 with all teeth tricuspid (fig. 25); thus 
it proves to belong to Charopa (cf. PILsBRY, Man. of Conch., Vol. 9, pl. 9, figs. 
23, 24). 
FAM. HELICIDAFE. 
Rhagada leptogramma PFEiFFER. Broome ('/s 1911), 4 dead shells, max. d. 
175 nam: 
R. reinga Gray. Broome ('/s 1911), 1 dead shell, d. 13 mm. This species also 
occurs at IKing's Sound (HEDLEY 1895). 
