CYCLOSTOMA. 
Puare XVII. 
Species 115. (Mus. Cuming.) 
CYCLOSTOMA H#®MASTOMA. Cycl. testd angusté excavato- 
umbilicatd, conico-globosd, solidd, cinerascente-carned, 
infra peripheriam purpureo unifasciatd, anfractibus 
rotundatis, spiraliter undique dense acuté liratis et 
sulcatis, ad suturas impressis ; apertura parviusculd, 
rotundatd, fauce purpureo-rufa, labro vix reflexo. 
THE RED-MOUTH CyYCLOsTOMA. 
vately umbilicated, conically globose, solid, ash-flesh 
colour, encireled with a purple band beneath the 
periphery, whorls rounded, spirally densely sharply 
ridged and grooved throughout, impressed at the 
sutures; aperture rather small, rounded, interior 
purple-red, lip scarcely reflected. 
Anton, Verzeichn. p. 54. 
Otomoma hemastoma, Gray. 
Hab. Round Island, Mauritius ; Robillard. 
A rather solid shell, sharply densely ridged and grooved 
throughout. The umbilicus is also ridged. 
Shell narrowly exca- 
Species 116. (Hig. a, 6, Mus. Cuming.) 
CYCLOSTOMA CLATHRATULUM. Cyc. testd subampliter 
umbilicatd, depressée globosd, crassiusculd, fuscescente- 
carned vel albd, violaceo-cinereo interdum obscuré 
lineaté et fasciatd, anfractibus rotundatis, undique 
malleatis et tenué clathratis; aperturaé parviusculd, 
fauce pallidé aurantid, labro simplici, subincrassato. 
THE LATTICED CycLostoma. Shell rather largely um- 
bilicated, depressly globose, rather thick, brownish- 
flesh-colour or white, sometimes obscurely lineated 
and banded with violet-ash, whorls rounded, mal- 
leated and finely latticed throughout ; aperture rather 
small, interior pale orange, lip simple, rather thickened. 
Reciuz, Revue Zool. Soc. Cuv. 1843, p. 3. 
Otopoma clathratulum, Pfeiffer. 
Hab. Yemen, Arvabia; Sowerby. Socotra; Reclua. 
The surface of this shell is very densely closely latticed, 
and it is also malleated in the manner so peculiarly cha- 
racteristic of the section Otopoma, to which it belongs. 
Species 117. (Fig. a, 6, Mus. Cuming.) 
CycLostoma NaTIcorDEs. 
oblique globosd, crass, roseo-albd, anfractibus con- 
Cycl. testa obtecté umbilicata, 
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vevis undique conspicue ruyoso-malleatis et subtilissime 
clathratis, ultimo subinflato ; apertura oblique subpy- 
riformi, fuuce aurantio-vitellind, labro calloso-incras- 
sato, parum reflexo, callo amplo, super umbilicum cx- 
panso. 
Tue Natica-Like CycLostoma. Shell with a covered 
umbilicus, obliquely globose, thick, rose-white, whorls 
convex, conspicuously rugosely malleated and very 
finely latticed throughout, last whorl slightly inflated ; 
aperture obliquely pear-shaped, interior orange-yelk 
colour, lip callously thickened, but little reflected, 
with a large callosity spread over the umbilicus. 
Recivz, Revue Zool. Soc. Cuv. 1843, p. 3. 
Otopoma Naticoides, Pfeiffer. 
Otopoma foliaceum, Gray (not Turbo foliaceus, Chem- 
nitz). 
Hab. Island of Socotra. 
This well-known species, as I have shown under Cyclo- 
phorus, Plate XIII. Sp. 52, is not the Turbo foliaceus of 
Chemnitz. 
Species 118. (Fig. a, 46, Mus. Cuming.) 
CYCLOSTOMA AURICULARE. Cycl. testa amplater perspec- 
tive umbilicatd, globoso-turbinatd, tenniculd, intus ex- 
tusque albd, anfractibus declivi-rotundatis, liris ob- 
stusis sulcisque spiralibus densé wrregulariter sculptis ; 
apertura pyriformi-rotundatd, labro subreflexo, versus 
umbilicum laminato-expanso. 
THE EaRED CycLostoma. Shell largely perspectively 
umbilicated, globosely turbinated, rather thin, white 
within and without, whorls slopingly rounded, densely 
irregularly sculptured with obtuse ridges and spiral 
grooves ; aperture pyriformly rounded, lip a little re- 
flected, laminately expanded towards the umbilicus. 
Gray, in Griffith’s Cuv. Anim. King. pl. 28. f. 5. 
Cyclostoma candidum, Sowerby. 
Cyclophora auricularis, Swainson. 
Otopoma auriculare, Gray. 
fab. ? 
A shell of very much lighter structure than the pre- 
ceding, having the whorls more freely turbinated, with no 
appearance of malleation upon the surface. 
April, 1862. 
