CYCLOSTOMA.—Ptare IX. 
subventricosis, spiraliter tenue liratis et malleatis ; | 
apertura circulari, labro expanso, parum reflexo, viride | 
purpureo-rufo. 
THE RED-MOUTH CYCLOSTOMA. 
licated, globosely turbinated, fulvous-fawn, encircled 
below the periphery with a purple-grey zone ; whorls 
rounded, rather ventricose, spirally finely ridged and 
malleated; aperture circular, lip expanded, but little 
reflected, deep purple-red. 
Cyclostoma hemastoma, Grateloup (not of Anton), Act. 
Soc. Linn. Bordeaux, p. 437. pl. 3. f. 5. 
Cyclostoma pyrostoma, Sowerby. 
Hab. Madagascar. 
As in most species of the genus, there is less indication | 
of sculpture below the periphery of the shell than above 
it. The deep purple-red of the lip passes somewhat into 
the interior. 
Species 52. (Mus. Cuming.) 
CycLostoma KRaAUssIANUM. 
licatd, globoso-conicd, fulvo-spadiced, violaceo-purpureo 
fasciatd et lineata; anfractibus subventricosis, spuraliter 
undique liratis, interstitiis striis longitudinalibus 
decussatis; apertura subampld, labro tenui, albido, 
Cycl. testd anguste umbi- 
parum reflexo. 
Kravss’s CycLtosroma. Shell narrowly umbilicated, glo- 
bosely conic, fulvous-fawn, banded and lineated with 
violet-purple ; whorls rather ventricose, spirally ridged 
throughout, the interstices being decussated with 
longitudinal strie; aperture rather large, lip thin, 
whitish, but little reflected. 
Preierrer, Pro. Zool. Soc. 1852, p. 64. 
Hab. Natal. 
Natal. 
Species 53. (Mus. Cuming.) 
CycLosroma unrrascratum. Cyel. testd subangusté wm- 
Shell moderately umbi- | 
A true Madagascar type, collected by Dr. Krauss at 
bilicatd, yrised, violaceo-purpureo infra peripheriam 
obscure anguste fasciata ; anfractibus subventricosis, 
levibus, ultimo circa umbilicum lirato ; apertura sub- 
circular, fauce croced, labro simplici. 
THE ONE-BANDED CycLostoma. Shell rather narrowly 
umbilicated, grey, obscurely narrowly banded below 
the periphery ; whorls rather ventricose, smooth, last 
whorl ridged around the umbilicus; aperture nearly 
circular, interior yellow, lip simple. 
Sowrrsy, Tankerville Cat. App. p. vin. 
Otopoma unifasciatum, Pfeiffer. 
Hab. Madagascar. 
A smooth ventricose shell, of which the colour, bright 
interiorly, is more or less obscured without by the grey 
coating which is characteristic of this form of the genus. 
Species 54. (Mus. Cuming.) 
CycLosTtoMA LiGaTuM. Cycl. testd subangusté umbilicata, 
globoso-lurbinatd, grised, violaceo-purpurco lineata et 
unifasciatd ; anfractibus rotundatis, subventricosis, mal- 
leatis, striis longitudinalibus et spiralibus obsolete re- 
ticulatis, ultimo circa umbilicum obtuse lirato ; aper- 
turd circulari, fauce purpureo-castaned, labro subex- 
panso, albo. 
Tur BoUND CycLostoma. Shell rather narrowly umbi- 
licated, globosely turbinated, grey, lineated and one- 
banded with violet-purple, whorls round, rather ven- 
tricose, malleated, obsoletely reticulated with longi- 
tudinal and spiral striez, last whorl obtusely ridged 
around the umbilicus; aperture circular, interior pur- 
ple-chestnut, lip slightly expanded, white. 
Nerita ligata, Miller, Hist. Venn. vol. ii. p. 181. 
Turbo ligatus, Chemnitz. 
Cyclostoma ligatum, Lamarck. 
Hab. Natal, Cape of Good Hope. 
Miiller’s original type, of which so many closely allied 
species have been lately described from Madagascar. 
