32 CATALOGUE OF PHANEROPNEUMONA. 
ing the whorls. Opere. circular, spiral, horn-coloured and con- 
cave inside, shelly exteriorly, furrowed on the periphery. Height 
5, breadth 10 mill. (4. & 2) 
Cyclostoma spiracellum, Adams & Reeve, Voy. Samarang. Moll. p. 
56, t. 14, f. 1. 
Pterocyclos? spiracellum, Pfr. Consp. n. 59; Pneum. Mon. p. 50. 
Hab. Borneo. 
“A small species, largely umbilicated, belonging to the division 
Pterocyclos.” (A. & £#.) Compare with Cyclotus rostellatus, n. 44. 
16. Prerocycios ? BICILIATUS. 
Shell orbicular, flattened above, largely umbilicated beneath, very 
thin, nearly membranaceous, with sharp and hairy transverse 
strie, yellowish, painted with angular fulvous stripes; spire 
depressed ; suture very deep; whorls 43, cylindrical, with two 
obsolete angles, and two rows of incurved black hairs, the last 
one deflected ; aperture oblique, circular (incomplete) ; the upper 
angle bearing a lamina with two channels. Height 7, greatest 
breadth 14.2, least br. 11.5 mill. (Jf) 
Pterocyclos biciliatus, Monsf. jav. Moll. p. 49. t. 20, f. 9. 
Pterocyclos? biciliatus, Pfr. Consp. no. 57 ; Pneuwm. Mon. p. 50. 
Cyclostoma biciliatum, Petit, in Jowrn. Conch. i. p. 43. 
Hab. India, Birmah. 
This shell seems to be very nearly allied to Cyclotus Tay- 
lorianus, and perhaps it may be the same species. 
III. CRASPEDOPOMA. 
Operculum horny, solid; whorls very narrow, with a central 
nucleus; external plate flat; internal deeply concave, fur- 
nished with a circular prominence on the penult whorl. Shell 
subturbinate, gaping, last whorl a little constricted anteriorly; 
peristome continuous, simple, receiving the internal prominence 
of the operculum. 
Craspedopoma, Pfr. in Z. f. MW. 1847, p. 48, 111; 1851, p. 137; 
Consp. p.9; Gray, Cat. Cycl. p. 13; Pfr. Pneum. Mon. p. 51. 
Bolania, Gray, Syn. Br. Mus. 1840 et 1842. p. 91 (not described). 
Cyclostoma sp., Lowe. 
Valvata sp., Menke. 
1. CRASPEDOPOMA LUCIDUM. B. M. 
Shell with an arcuate, linear, compressed umbilicus, globose-conic, 
rather solid, striate, lucid, greenish-horn-coloured ; spire conic, 
rather pointed; whorls 5, convex, the last one obsoletely angu- 
a ah | ate i. 
