LEPTOPOMA. 
PLate VI. 
Species 31. (Mus. Cuming.) 
Lepropoma Panayunse. Sept. testd anguste wmbilicatd, 
globoso-conicd, tennissimd, corned, pallidée fuscescente, 
castaneo variegatd ; anfractibus declivi-conveais, ad 
peripheriam angulatis, undique spiraliter filoso-liratis; 
apertura circulari, labro laté concavo-expanso, sub- 
auriculato. 
Tue Panay Lepropoma. Shell narrowly umbilicated, 
elobosely conical, very thin, horny, pale brown, varie- 
gated with chestnut; whorls slopingly convex, angled 
at the periphery, spirally thread-ridged throughout ; 
aperture circular, lip broadly concavely expanded, 
slightly auriculated. 
Cyclostoma Panayense, Sowerby, Pro. Zool. Soc. 1843, p. 
62. : 
Leptopoma Panayense, Pfeiffer. 
Hab. Island of Panay, Philippines; Cuming. 
A shining brown shell of light horny substance. 
Fig. 32. (Mus. Cuming.) 
The shell here figured is the Cyclos/oma luteum of Les- 
son, adopted originally in Zeitschr. fiir Malac. as a specics, 
Leptopoma luteum, but referred subsequently to L. vitreum 
as variety of it. 
Species 33. (Mus. Cuming.) 
Leptopoma apicatuM. Lept. testd minute umbilicatd, 
globoso-conicd, albidd, interdum flammulis et fascid 
lata infra peripheriam ornatd ; anfractibus rotundatis, 
levibus, sub lente minutissimée spiraliter striatis ; 
apertura circulari, parviusculd, labro plano-expauso. 
THE POINTED Lepropoma. Shell minutely umbilicated, 
elobosely conical, whitish, sometimes ornamented 
with small flames and, beneath the periphery, with a 
broad band; whorls rounded, smooth, beneath the 
lens very minutely spirally striated; aperture circu- 
lar, rather small, lip flatly expanded. 
Brnson, Ann. and Mag. Nat. Hist. 1856, vol. 18. p. 95. 
Hab. Ceylon; EH. F. Layard. 
There is no appearance of thread-ridges in this species, 
the surface being simply sculptured with exceedingly mi- 
nute engraved strie. 
Species 34. (Fig. a, 6, Mus. Cuming.) 
LerTopoMa InsiGNn. Lept. testd angusle subexcavato- 
umbilicatd, subconoided, tenuissimd, membranaced, oli- 
vaceo-corned ; anfractibus convexo-inflatis, spiraliter 
multiliratis, ad peripheriam carinatis, interstitiis obli- 
que plicato-striatis ; apertura lunato-rotundatd, sub- 
ampla, labro tenué refleco. 
THE REMARKABLE Lepropoma. Shell narrowly some- 
what excavately umbilicated, subconical, very thin, 
membranaceous, olive horny; whorls convexly in- 
flated, spirally many-ridged, keeled at the periphery, 
interstices obliquely plicately striated; aperture lu- 
nar-rounded, rather large, lip thinly reflected. 
Cyclostoma insigne, Sowerby, Pro. Zool. Soc. 1843, p. 62. 
Leptopoma insigne, Pfeiffer. 
Hab. Calapan, Island of Mindoro, Philippines; Cuming. 
A dark olive, light, inflated, horny shell, perfectly mem- 
branaceous. 
Species 35. (Fig. a, 6, Mus. Cuming.) 
LEPTOPOMA SEMICLAUSUM. Lept. testé minute umbilicatd, 
globoso-turbinata, rufo-fuscescente, albo profuse fulgu- 
raté; anfractibus rotundatis, sub lente minutissime 
decussatim striatis ; apertura circulari, labro plano- 
expanso, albo. 
THE HaLr-cLosED Lepropoma. Shell minutely umbili- 
eated, globosely turbinated, reddish-brown, profusely 
lightning-marked with white; whorls rounded, be- 
neath the lens very minutely decussately striated ; 
aperture circular, lip flatly expanded, white. 
Cyclostoma semiclausum, Pro. Zool. Soc. 1854, p. 302. 
Leptopoma semiclausum, Pfeiffer. 
Hab. Ceylon; Thwaites. 
A strikingly marked keel-iess species. 
Species 36. (Fig. a, 6, Mus. Cuming.) 
Lreptopoma Watiacet. Lept. testé minute umbilicatéa, 
globoso-conicd, pellucido-albd, fulvo-caslaneo remote 
bifasciatd ; anfractibus rotundatis, spiraliter liratis, 
liris subdistantibus ; aperturd circulari, labro tenue 
expanso. 
WaLlAcn’s 
Lepropoma. Shell minutely umbilicated, 
globosely conical, transparent white, remotely two- 
February, 1862. 
