CYCLOPHORIDA. ot 
Chondropoma Ottonis, Pfr. Consp. n. 439; Pnewm. Mon. p. 296. 
Variety ? Cyclostoma petricosum, Morelet, Test. Noviss. ii. p. 19, 
n. 130? 
Hab, Cuba, Callejabas (Otto), Almendares, near Havana (Morelet, 
Poey). 
To be compared with Choanopoma pudicum, Orb. 
35. CHONDROPOMA ? SEMICANUM. 
Shell ventricosely conoidal, rather solid, whitish, pale fulvous 
towards the apex, coarsely sculptured with very crowded curled 
wrinkles and broader decurrent furrows ; whorls 4, convex, the 
last ventricose, with more distant spiral wrinkles at the base ; 
suture deep; aperture circular, shining, white within; peri- 
stome rather double, with the outer edge narrowly expanded, 
circularly channelled, dilated above, angularly folded near the 
umbilicus, which is almost covered. Length 13, breadth 8 mill. 
Cyclostoma semicanum, Morelet, Testac. Noviss. ii. p. 20, n. 131. 
Chondropoma ? semicanum, Pfr. Preum. Mon. p. 419, n. 491 a. 
Hab. Isla de Pinos, near Cuba. 
36. CHONDROPOMA ? SERICATUM. 
Shell deeply umbilicated, ventricosely conoidal, with the apex 
truncated, silk-shining, semi-diaphanous, thin, sculptured some- 
what coarsely with very crowded curled wrinkles and several 
stripes decurring on the last whorl, fulvous-reddish, with a great 
number of obscure bands; suture deep; whorls 4, convex, the 
last turgid, spirally grooved round the umbilicus; aperture 
large, elliptical; peristome double; inner edge prominent ; 
outer edge expanded, folded slightly and radiatingly, conceal- 
ing the umbilicus by a thin, shining, whitish, convex callus. 
Length 18, breadth 10 mill. 
Cyclostoma sericatum, Morelet, Test. Noviss. ii. p. 20, n. 132. 
Chondropoma ? sericatum, Pfr. Preum. Mon. p. 419, n. 4916. 
Hab. Cuba, the mountains of Guajaibon. 
Operculum thick, of two horny coats, concamerated between. 
Pomatiaina. 
XXVI. POMATIAS. 
Operculum cartilaginous, few-whorled, composed of two plates, 
concamerated within. Shell somewhat imperforate, conico- 
turreted or turreted, longitudinally striated or ribbed. Peri- 
stome nearly simple or double, the internal edge continuous, 
the external expanded or reflexed, often auriculated. 
