CYCLOSTOMA. 
Prats XXI. 
Species 137. (Mus. Cuming.) 
CycLOSTOMA LINCINELLUM. 
vato-umbilicatd, abbreviato-turbinald, tenui, cinereo- 
Cycl. testa compressé eaca- 
ulvidd, rufo obscure quadrifasciatd, sericind, anfrac- 
2 ? | 
tibus rotundatis, longitudinaliter dense filoso-striatis, 
lineis minutis spiralibus exsculptis, anfractu ultimo 
dilatato-producto ; aperturdé circulari, labro modice 
plano-reflexo. 
THE FINELY-corppp Cycnostoma. Shell compressly 
excavately umbilicated, shortly turbinated, thin, ash- 
tawny, obscurely four-banded with red, silky, whorls 
rounded, longitudinally densely thread-striated, sculp- 
tured with minute spiral lines, last whorl dilately 
produced ; aperture circular, lip moderately flatly re- 
flected. 
Lamarck, Anim. sans vert. vol. vii. p. 359. 
Cyclostoma compressum, Gray. 
Choanopoma lincinella, Pfeiffer. 
Hab. Jamaica. 
The last whorl of this species is dilately produced in a 
transverse direction, imparting a compressed form to the | 
shell. 
Species 138. (Mus. Cuming.) 
CYcLOsTOMA PERPLICATUM. Cycel. testa vix minute um- 
bilicatd, cylindraceo-turritd, fulvidd, anfractibus con- 
vexis, liris fortibus spiralibus, striis longitudinalibus 
filiformibus dense decussatis exquisite exsculptis, suturis 
impressis, rudé plicato-syuamatis ; apertura parvius- 
culd, labro parum reflexo. 
THE STRONGLY-PLAITED CYCLOSTOMA. 
minutely umbilicated, cylindrically turreted, fulvous, 
whorls convex, exquisitely sculptured with strong 
spiral ridges densely decussated by longitudinal 
thread-like striz, sutures impressed, rudely plicately 
scaled; aperture rather small, lip but little reflected. 
Gunptacu, Malak. Blitt. 1857, p. 177. 
Choanopoma perplicatum, Pfeiffer. 
Hab. Cuba. 
Exquisitely decussately sculptured, the longitudinal 
strie gathering into irregular plicated scales in the su- 
tures. 
Shell scarcely 
Species 139. (Mus. Cuming.) 
CycLostoma ARANGIANUM. Cyel. testd angusté umbi- 
licatd, subacuminato-turritd, fuleidd, castanco strigata 
et lineari-fasciatd, anfractibus convecis, costulis spira- 
libus subdistantibus, striis longitudinalibus dense de- 
cussalis pulcherrime exsculptis; apertura minutiusculd, 
labro subfimbriato. 
Aranoa’s CycLostoma. Shell narrowly wmbilicated, 
rather acuminately turreted, fulvous, streaked and 
linearly banded with chestuut, whorls convex, very 
beautifully sculptured with rather distant spiral fine 
ribs, densely decussated with longitudinal strie ; 
aperture rather minute, lip slightly frilled. 
Gunpuacu, Malak. Bhitt. 1857, p. 177. 
Choanopoma Arangianum, Pfeiffer. 
Hab. Cuba. 
Sculptured with more broadly-latticed sculpture than 
the preceding species, and prettily painted with decussa- 
ting chestnut bands. 
Species 140. (Mus. Cuming.) 
CycLostoMa Lima. Cycl. testd modicé compressé umbili- 
catd, oblongo-turbinatd, purpurascente-brunned, an- 
Sractibus rotundatis, lincis spiralibus striisque longitu- 
dinalibus densissimé scabroso-decussatis ; apertura cir- 
culari, labro latissimé plano-concave fimbriato. 
Tue FILE CycLtostoma. Shell moderately compressly um- 
bilicated, oblong-turbinated, purplish-brown, whorls 
rounded, very densely scabrously decussated with 
spiral lines and longitudinal striz ; aperture circular, 
lip very broadly flatly concavely frilled. 
Apams, Pro. Nat. Hist. Soc. Boston, 1845, p. 11. 
Choanopoma lima, Pfeiffer. 
Hab. Jamaica. 
A finely scabrously decussated species, of a livid-pur- 
plish colour. 
Species 141. (Fig. a, 6, c, Mus. Cuming.) 
CycLosToMA MAJUSCULUM. Cyel. testd anguslé umbili- 
cata, subacuininato-oblangd, fulvescente, maculis par- 
vis rufo-castaneis sagittaformibus interdum fasciatd, 
anfractibus convexis, undique dense malleato-clathra- 
tis, suluris plicato-squamatis, squamis subspinosis, 
April, 1862. 
