CY CLOS TOM A. 
PLATE 
Species 85. (Mus. Cuming.) 
CycLostoma oBLIGATUM. OCycl. testdé minute excavato- 
umbilicata, subglobosd, solidd, griseo-alba ; anfracti- 
bus convexis, undique spiraliter acute costatis ; aper- 
turd semilunari, labro simplici. 
THE STRONGLY-BOUND CYCLOSTOMA. 
excavately umbilicated, nearly globose, solid, grey- 
white; whorls convex, sharply spirally ribbed through- 
out; aperture semilunar, lip simple. 
Goup, Expedition Shells, pl. 8. f. 119. 
Cyclophorus ? obligatus, Pfeiffer. 
Hab. Society Islands. 
A small shell of solid spirally-ribbed growth. 
Species 86. (Mus. Cuming.) 
CYCLOSTOMA COSTULATUM. 
bilicatd, globoso-conoided, solidiusculd, griseo-rubella ; 
Cycl. testa subanguste wn- 
anfractibus spiraliter crebriliratis ; aperturd circulari, 
labro simplict. 
THE FINELY-RIBBED CycCLosToma. 
rowly umbilicated, globosely conoid, rather solid, 
grey-reddish; whorls spirally closely ridged; aper- 
ture circular, lip simple. 
ZIEGLER, Rossmasler, Icon. Land und Siissw. Moll. vol. 
vi. p. 49. pl. 28. f. 395. 
Cyclostoma Olivieri, Sowerby. 
Cyclystoma Syriacum, Ziegler. 
Cyclostoma orientale, Rossmasler. 
Shell minutely | 
Shell rather nar- | 
Hab. Hungary ; neighbourhood of the Caspian Sea; Syria. | 
D 2 to} a | 
Of a rather depressed globosely-couoid form, simple, | 
spirally ridged throughout. 
Species 87. (Mus. Cuming.) 
CycLostoma ZANZIBARICUM. 
catd, globoso-conicd, fulvescente, infra peripkeriam 
Cycl. testa minute umbili- 
purpureo unifasciatd ; anfractibus convexis, subinflatis, | 
lineis spiralibus subobsoletis cinctis, ultimo circa um- 
bilicum tenué lirato; aperturd subcirculari, labro 
simplici. 
Tue ZanziBar CyCLOsToMA. 
cated, globosely conical, fulvous, one-banded beneath 
Shell minutely umbih- 
XIV. 
the periphery, with purple; whorls convex, some- 
what inflated, encircled with rather obsolete spiral 
lines, last whorl finely ridged around the umbilicus ; 
aperture nearly circular, lip simple. 
Perit, Journ. Conch. 1850, p. 53. pl. 3. f. 5. 
Hab. Zanzibar. 
A light inflated shell of the prevailing Madagascar type. 
Species 88. (Mus. Cuming.) 
CycLostoMa MicrocHAsMA. Cycl. testa modicé umbili- 
catd, globoso-turbinatd, depressiusculd, tenui, stramined, 
infra peripheriam purpureo-rufo conspicue unifasciatd ; 
anfractibus convewis, lineis spiralibus confertis cinctis ; 
apertura circulari, labro subeapanso. 
THE MODERATELY-GAPING CycLostoma. Shell mode- 
rately umbilicated, globosely turbinated, rather de- 
pressed, thin, straw-coloured, conspicuously one- 
banded with purple-red below the periphery ; whorls 
convex, encircled with close-set spiral lines; aper- 
ture circular, lip a little expanded. 
Preirrer, Pro. Zouol. Soc. 1856, p. 338. 
Hal. Madagascar. 
A delicately coloured shell, of rather more depressly 
turbinated growth than generally belongs to this well- 
known type. 
Species 89. (Fig. a, 4, Mus. Cuming.) 
CycLostoma Kinneri. Cyel. testd late patenté umbili- 
catd, depressé orbiculari, subdiscoided, castanco-rufa, 
albo sparsim articulatd ; anfractibus angustis, juxta 
suturas subplanulatis, ad peripheriam obscuré angu- 
latis, supra spiraliter validé liratis, infra levibus ; 
apertura oblique circulari, fauce rufa, labro subreflexo, 
margine angulato-producto. 
Kiener’s Cyciostoma. Shell broadly openly umbili- 
cated, depressly orbicular, nearly discoid, chestnut- 
red, sparsely articulated with white ; whorls narrow, 
rather flattened next the sutures, obscurely angled at 
the periphery, spirally strongly ridged above, smooth 
below; aperture obliquely circular, interior red, lip 
slightly reflected, margin angularly produced. 
December, 1861. 
