CYCLOSTOMA.—Puate XXI. 
opaco-albis apertura pyriformi-rotundatd, labro valide 
calloso-reflexo. 
THE RATHER LARGE CycLostoma. Shell narrowly um- 
bilicated, acuminately oblong, fulvous, sometimes 
banded with small reddish-chestnut arrow-headed 
spots, whorls convex, everywhere closely malleately 
latticed, sutures plicately scaled, scales subspinous, | 
opake-white ; aperture pyriformly rounded, lip strong- 
ly callously reflected. 
Moretet, MS. Gray, Cat. Phanerop. Brit. Mus. 1852, 
p. 108. 
Choanopoma majusculum, Pfeiffer. 
Cyclostoma pactum, Poey. 
Choanopoma pactum, H. and A. Adams. 
Hab. Cuba. 
A boldly turbinated shell, finely malleately latticed 
throughout, banded with small arrow-headed chestnut 
spots. 
Species 142. (Fig. a, 6, Mus. Cuming.) 
CYCLOSTOMA INTERRUPTUM. Cyel. testa compresse um- 
bilicatd, ovato-turbinatd, pellucido-albd, nitente, ru- 
fescente sparsim interrupte fasciaté, anfractibus con- 
vevis, sub lente tenue decussatim striatis; apertura 
circulari, labro latissim éplano-concace fimbriato, fim- | 
brid pone rufescente radiatim maculata. 
Tue INTERRUPTED CycLostoma. Shell compressly um- 
bilicated, ovately turbinated, transparent-white, shin- 
ing, sparingly interruptedly banded with pale-red, 
whorls convex, beneath the lens finely decussately 
striated; aperture circular, lip very broadly flatly 
concavely frilled, frill radiately spotted behind with 
pale-red. 
Lamarck, Anim. sans vert. vol. ix. p. 356. 
Choanopoma interruptum, Gray. 
Hab. Jamaica. 
A delicately painted semitransparent-white shell, boldly 
convoluted and broadly concavely flatly frilled. 
Species 143. (Mus. Cuming.) 
CycLostoMa PEAMANN@ANUM. Cyel. testa subampliler 
aperte compresse umbilicatd, subacuminato-turbinatid, 
opaco-alba, pallidé rufescente obsolete sparsim macu- 
lutd, anfractibus rotundatis, subangustis, striis longi- 
tudinalibus crenatis undique dense annulatis, anfractu 
ultimo laxé elongato-producto ; apertura parva, labro 
laté plano-fimbriato. 
PramaNnn’s Cyctostoma. Shell rather largely openly 
compressly umbilicated, rather acuminately turbi- 
nated, opake-white, sparingly obsoletely blotched 
with pale-red, whorls rounded, rather narrow, densely 
ringed throughout with crenated longitudinal strice, 
last whorl loosely elongately produced; aperture 
small, lip broadly flatly frilled. 
Currry, MS. in Mus. Cuming. 
Hab. Jamaica. 
A loosely convoluted Cylindrella-like species, densely 
| ringed throughout with crenated lamelliform striz. 
