CYCLOPHORUS. 
Puate XIII. 
Species 52. (Hig. a, 6, Mus. Benson.) 
CycLopHorus FoLiacnus. Cycl. testd angusté subobtecté 
umbilicatd, pyramidali-turbinatd, solidiusculd, pellu- 
cido-albd, versus apicem vivide purpureo-rosed, epider- 
mide fuscescente decidud ; anfractibus subangustis, ro- 
tundatis, spiraliter inciso-striatis, ultimo versus aper- 
turam plus minus irregulariter varicoso; apertura 
circulari, labro reflexo. 
THE Leary CyctorHorvs. Shell with a narrow partially 
covered umbilicus, pyramidally turbinated, rather 
solid, transparent white, bright purple-rose towards 
the apex, with a deciduous brownish epidermis ; 
whorls rather narrow, round, spirally incisely striated, 
more or less irregularly varicose towards the aper- 
ture; aperture circular, lip reflected. 
Turbo foliaceus, Chemnitz, Conch. Cab. vol. ix. part ii. 
p- 59. pl. 128. f. 1069, 1070. 
Cyclostoma foliaceum, Pfeiffer in Kuster, Conch. Cab. 
Cyclophorus foliaceus, Benson. 
Hab. Andaman Islands, Bay of Bengal; Captain Haugh- 
ton. 
We are indebted to Mr. Benson for having correctly 
determined both the genus and species of this long-lost 
shell from specimens containing horny opercula, two of 
which are figured in our plate, lately collected by Captain 
Haughton at one of the Andaman Islands. It was admir- 
ably figured between seventy and eighty years ago by 
Chemnitz, but the figures of the ‘ Conchylien Cabinet’ have 
been regarded as representing worn specimens of the well- 
known Otopoma Naticoides from Socotra, which has a 
shelly operculum. Dr. Pfeiffer separated it from that 
species in 1846 in his monograph of Cyclostoma in Kus- 
ter’s edition of the ‘ Conchylien Cabinet,’ but in his subse- 
quent monographs he abandoned that view, and quoted it 
as a synonym of O. Naticoides. Mr. Benson’s discovery 
confirming the original species of Chemnitz, was made 
known in the ‘ Annals and Magazine of Natural History’ 
for February, 1860, and January, 1861. It will be seen 
that Mr. Benson’s specimens are smaller than that figured 
by Chemnitz, but he thinks it probable that larger speci- 
mens may be found when the exploration of the main is- 
land of the group can be safely attemped. ‘The varicose 
repetition of the lip appears to be a constant character of 
the species. 
Species 53. (Hig. a, 0, Mus. Benson.) 
CycLopnorus EXUL. Cyel. testd subangusté contracté um- 
bilicatd, globoso-turbinatd, pellucido-alba, epidermide 
Suscescente decidua, rufo-fusco tenue flammata ; anfrac- 
tibus supra plano-declivibus, deinde conveuis, spiraliter 
validé liratis et striatis; apertura subcirculari, labro 
tenué expanso. 
THE EXILE CycLopHorus. Shell rather narrowly con- 
tractedly umbilicated, globosely turbinated, rather 
thin, transparent white, with a deciduous brownish 
epidermis, thinly flamed with red-brown; whorls 
flatly sloping above, then convex, spirally strongly 
ribbed and striated; aperture nearly circular, lip 
thinly expanded. 
Benson, Ann. and Mag. Nat. Hist., 1854, vol. xiv. 
p- 412. 
Hab. Bhamoury, foot of the Western Himalaya, bordering 
on Rohilkund ; Captain Boys. 
Mr. Benson describes C. exul as being the most northerly 
Cyclophorus known. It comes very near to C. altivagus, 
and as no other specimen has been pronounced to belong 
to the species but the one here figured, it needs confirma- 
tion. Its more northerly habitat would account in some 
measure for the shell being of lighter and more transparent 
substance. 
Species 54. (Fig. a, 4, Mus. Benson.) 
CyctopHorus Canrori. Cyel. testdé modicé umbilicata, 
subgloboso-turbinatd, albida, fusco minute undulato- 
marmoratd, infra peripheriam fasciatd ; anfractibus 
levibus, sub lente decussatim striatis, supra planulatis, 
deinde convevis, ad peripheriam obscuré angulatis ; 
aperturd circulari, labro incrassatim reflexo, late 
plano-expanso. 
Cantor’s CycLopHorus. Shell moderately umbilicated, 
somewhat globosely turbinated, whitish, minutely 
wave-marbled with brown, banded below the peri- 
phery; whorls smooth, decussately striated beneath 
the lens, flattened above, then convex, obscurely 
angled below the periphery; aperture circular, lip 
thickly reflected, broadly flatly expanded. 
Cyclostoma Cantori, Benson, Ann. and Mag. Nat. Hist., 
1851, vol. vili. p. 186. 
Cyclophorus Cantori, Pfeitter. 
August, 1861. 
