CYCLOPHORUS. 
PLATE 
Species 58. (Mus. Cuming.) 
CycLopHorus pLicatus. Cyel. testd subangusté pro- 
Sunde umbilicaté, obtuse conoided, solidiusculd, sordide 
alba ; anfractibus declivibus, valid oblique rugoso-pli- 
catis, spiraliter striatis, ad basin subangulatis ; aper- 
turd pared, circulari, labro simplici. 
THE PLEATED CycLopHorus. Shell rather narrowly 
deeply umbilicated, obtusely conoid, rather solid, 
dead white; whorls sloping, strongly obliquely wrin- 
kle-plaited, spirally striated, slightly angled at the 
base; aperture small, circular, lip simple. 
Cyclostoma plicatum, Gould, Pro. Bost. Soc. Nat. Hist. 
1847, p. 204. 
Cyclostoma Apia, Recluz. 
Cyclostoma pulverulentum, Philippi. 
Haé. Island of Samoe, South Seas. 
A small Trochus-like species of solid growth, obliquely 
wrinkle-plaited throughout. The name plicatum has been 
given to a fossil species of Cyclostoma, but that seems 
hardly sufficient to invalidate the priority of Dr. Gould’s 
description, referring, as it does, to Cyclophorus. 
Species 59. (Mus. Cuming.) 
CycLopHorus FLAvus. Cyel. testd perangusté profunde 
umbilicata, conico-globosd, flava ; anfractibus spiraliter 
confertim sulcatis, juxta suturas depressis, deide tu- 
mido-convexis ; apertura subpyriformi, ampla, labro 
simplict. 
THE YELLOw CycLopHorts. Shell very narrowly deeply | 
umbilicated, conically globose, yellow ; whorls spirally | 
closely grooved, depressed next the sutures, then 
tumidly convex; aperture somewhat pear-shaped, 
large, lip simple. 
Cyclostoma flavum, Broderip, Pro. Zool. Soc. 1832, p. 59. 
Chondropoma flacum, Gray. 
Cyclophorus flavus, Pfeiffer. 
Had. Island of Annaa, Pacific Ocean (at the roots of 
palm-trees); Cuming. 
A small strongly grooved species with somewhat of the 
aspect of a Liétorina. 
Species 60. (Mus. Cuming.) 
CYCLOPHORUS MARGARITA. 
Cycl. testé subangusté wm- | 
| CYCLOPHORUS ATRAMENTARIUS. 
XIV. 
bilicatd, globoso-conicd, subinflata, tenue pellucida, 
aurantio-corned, apice rosed ; anfractibus levibus, de- 
clivi-convexis ; aperturd subpyriformi-ovatd, labro 
simplict. 
Tur PEARL CycLopuorus. Shell rather narrowly um- 
bilicated, globosely conical, rather inflated, thin, 
transparent, orange-horny, rose at the apex; whorls 
smooth, slopingly convex; aperture somewhat pyri- 
formly ovate, lip simple. 
Cyclostoma margarita, Pfeiffer, Pro. Zool. Soc. 1851, p. 
244. 
Hab. Island of Rapa, Pacific Ocean ; Cuming. 
This is not spirally grooved like the preceding species, 
but of a smooth semitransparent golden-horny substance 
pink at the apex. 
Species 61. (Mus. Cuming.) 
CYCLOPHORUS TURBINATUS. Cycl. test modicé  exca- 
vato-umbilicatd, depresso-turbinatd, fulvidd, juxta su- 
turas obsolete fusco-punctatd ; anfractibus subguadrato- 
convewis, spiraliter confertissimé striatis, et hic illic 
carinatis ; aperturé circulari, labro reflexo. 
THE TURBINATED CycLopHorus. Shell moderately ex- 
cavately umbilicated, depressly turbinated, fulvous, 
obsoletely brown-dotted, next the sutures; whorls 
rather squarely convex, spirally very closely striated, 
here and there keeled ; aperture circular, lip reflected. 
Cyclostoma Helicoides, Sowerby (not of Grateloup), Pro. 
Zool. Soe. 1843, p. 65. 
Cyclostoma turbinatum, Pfeiffer. 
Cyclophorus turbinatus, Pfeiffer. 
Hab. Island of Bohol, Philippines ; Cuming. 
This species is scarcely distinguished from C. Guimara- 
sensis, to which itis in all respects closely allied, except by 
its strongly marked raised spiral striz. 
Species 62. (Fig. a, 4, Mus. Cuming.) 
Cycl. testé subanguste 
umbilicatd, solidiusculd, livido-purpured, cerulescente 
tinctd, fusco sparsim flammatd ; anfractibus angustis, 
superne subplanulatis, deinde convexis ; aperturd cir- 
culari, labro tenue plano-expanso. 
August, 1861. 
