PUPILLA, AUSTRALIA. 221 



Pupa tasmamca (pi. 23, fig. 18). Shell minute, sinistral, 

 thin, of a uniform light fawn colour, sub-pellucid, oblong, 

 cylindrical, obliquely finely lirate; suture somewhat im- 

 pressed ; spire scarcely contracted towards apex, which is sud- 

 denly obtusely rounded; whorls 6, slightly convex, aperture 

 somewhat squarely ovate, subvertical, with a moderately 

 prominent tooth ; peristome simple, margins distant, united by 

 a callous lamina ; anterior and columellar margins slightly re- 

 flexed. Length 3 min., diam. 1.75 min. Habitat, sand dunes, 

 Swansea, abundant (Johnston). 



34. PUPILLA FICULNEA (Tatc). PL 23, figs. 20, 21. 



Shell dextral, shortly cylindric-elliptical ; apex obtuse, pale 

 brown, shining. Whorls six, flatly convex, separated by a 

 channellel suture, obliquely striated. Aperture roundly-oblong, 

 rounded in front and somewhat obliquely truncated behind, 

 furnished with two folds, one parietal large, blunt, situated 

 centrally and far within, the other, nearly as large and simi- 

 lar, is situated far within on the columella; a small denticle 

 is sometimes developed at the insertion of the outer lip ; peri- 

 stome white, flatly expanded, the columellar expansion not 

 concealing the deep, narrow umbilical fissure. Length 3.5, 

 width 1.75 vie (Tate). 



Central Australia: Palm Creek, off Glen of Palms, in 

 Krichauff Range (Horn Exped.). 



Pupa ficutnea TATE, Trans. Roy. Soc. S. Australia, xviii, 

 1894, p. 191; Rep. Horn Expedition, ii, 1896, Mollusca, p. 

 205, pi. 19, f. 18a, 18&. PILSBRY, Proc. A. N. S. Phila., 1900, 

 pp. 426, 428, fig. 2. 



P. ficulnea of the interior is very similar to the coastal P. 

 australis in shape, sculpture, color, suture and peristome. It 

 differs by the dextral coil, the larger teeth, presence of an 

 upper-palatal fold, and greater external compression and im- 

 pression over the lower-palatal fold. It is not so strongly 

 sculptured as the rougher examples of australis, the striation 

 being minute and weak. 



The angular nodule is strongly developed in old shells, but 

 often hardly perceptible in others which have formed the lip. 

 The columellar lamella is strong and blunt. There are two 

 palatal folds, not mentioned by Tate, but present in 16 topo- 



