•Oct., 1921 
The Queensland Naturalist. 
35 
Shell large and discoidal, with flattened spire and 
broadly open umbilicus, solid, opaque and coloured. Whorls 
.5-6, the last large, deeply defiexed in front. Aperture 
toblong-truncate, nearly horizontal, the lip slightly expanded, 
blunt. Type, P. cunninghamii Gray. 
14. cunninghamii Gray. Tryon, loc. cit., vi, 14; PL 2, 
f. 28-31 ; ix, p. 159. Cox, loc. cit., p. 52, PI. 1, f. 5. 
Hedley, Proc. Roy. Soc. Qd., 6, p. 63, PI. 3. 
15. muJilf eldtiana Pfr. Tryon, loc. cit., vi, 15; ix, 159. 
Cox, loc. cit., p. 53, PL vi, f. 2. Sometimes given 
as a variety of 14. 
VII. Panda Albers. Tryon, loc. cit., vol. ix, p. 163. 
Shell bulimoid rather than helicoid, globose-oblong, 
higher than wide, umbilicate or perforate, thin but strong. 
Whorls 44, the first two from apex finely beaded ; apex 
•obtuse. Last whorl very large, hardly descending in front. 
Aperture large, subvertical, higher than wide ; outer lip 
thin, not expanded ; eolumellar lip reflexed towards its inser- 
tion. Type, P. falconeri, Reave. 
16. falconeri Reeve. Tryon, loc. cit., vol. vi, p. 75, 
Pl. 19, f. 33; ix, p. 164. Cox, loc. cit., p. 5, PL 
vi, f. 6. 
17. maconelli Reeve. Tryon, loc. cit.. vol. vt, p. 76, PI. 
19, f. 26; ix, 164, as variety of 13. Cox, loc. cit., 
p. 6, Pl. in, f. 5. 
s. Epiphallogona Tryon, loc. cit., vol. ix, p. xxx. and 
XXXV. 
VIII. Chloritis Beck. Tryon, loc. cit., vol. ix, p. 117. 
Shell varying from discoidal and biconcave to depressed 
subglobose with convex spire; the apical whorl flattened or 
-sunken, and showing under the lens regularly arranged 
granules or hair-points, which often persist over the whole 
shell. Aperture lunate, the lip reflexed. Tvpe, C. ungulina 
L. 
18. aridorum Cox. Tryon, loc. cit., vol. vi, 266, PI. 58. 
f. 31-3; vol. ix, 122. Cox, loc. cit., p. 44, Pl. xi, 
/. 16, 1 6a. 
19. mansueta Pfr. Tryon, loc. cit., vol. vi, 264, Pl. 33, 
f. 64-5; ix, 122. Cox, loc. cit., p. 59, PL 11 , f. 4. 
20. porteri Cox. Tryon, loc. cit., vol. vi, p. 263, Pl. 58, 
f. 23-4; ix, 122. Cox, loc. cit., p. 48, Id. in, f. 6a, 
6b. 
IX. Thersites Pfeiffer. Tryon, loc. cit., ix, p. 125. 
Shell narrowly umbilicate or imperforate, varying from 
globular to trochoidal or thick lens-shaped and keeled, 
usually solid. Whorls 5 or 6, the apex smooth, never granu- 
