HORN EXPEDITION—MOLLUSCA. 
205 
Pupa ficulnea, Tate. (Plate XIX., Fig. 18.) 
Reference—Trans. Rny. Soc. S. Aust., vul. xviii., p. 191, 1894. 
Shell dextral, shortly cylindric-elliptical ; apex obtuse, pale brown, shining. 
Whorls six, llatly convex, separated by a channelled 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 similar, is situated far within on the 
columella; a small denticle is sometimes developed at the insertion of the outer 
lip ; peristome white, flatly expanded, the columellar expansion not concealing the 
deep nari’ow umbilical Assure. 
Dimensions. —Length, 3‘5 ; width, 1-75 (vix.) 
Locality. —Palm Creek, oil Glen of Palms, in Krichaull Range. 
This species has the apertural characters of F. australis. The form is less 
pointed at the ends, but it is proportionately very much narrower, the suture more 
channelled, and is dextral and smaller. With these difl'erences I cannot accept 
the prospective objection to the validity of the species that it represents the 
dextral form of P. australis. Smith has recorded, Proc. Mai. Soc., No. 3, p. 9G, 
1894, P. lincolniensis, Cox, from the north-west coast of Australia. That species is 
essentially conflned to the coast, and I have traced it from St. Vincent Gulf along 
the coastal sand-hills into West Australia, and am unfamiliar with an associate 
form at all like P. ficulnea. 
Pupa lapapinta, sp. nov. (Plate XIX., Fig. 19.) 
Shell dextral, oblong-elliptic, pellucid, white, narrowly umbilicated. Spire 
cylindrical, obtuse at the apex; whorls live, very convex, separated by a deep 
suture, ornamented by very oblique striie of growth ; last whorl slightly ascending 
at the front; aperture roundly oblong, multidentate within ; peristome narrowly 
and horizontally expanded, the margins united by a thin parietal callus. 
The dentition of the aperture consists of two lainelliform contiguous plaits on 
the parietal wall, the outer one of which is the larger, an equally large plait on the 
columella, one on the basal margin, and one on the outer lip. All these are 
approximately equidistant. In addition, denticles occasionally appear, one exterior 
to the large plait on the parietal wall, one anterior to the columella plait, and one 
or two on the outer lip. 
Dimensions .—Length, 3; diameter, 1-25. 
