MO LLU SO A a A STE ROPOD A . 
127 
he gives separate names. There are three forms, and the first is divided 
into three orders. 
Clausilia pluviatilis, Benson (Annal. ix. p. 486), pale olive colour ; 
fourteen whorls, all faintly striated transversely ; at the base of the lip 
an oblique solid fold, and a parallel groove. Cl. aculus, id. ib., brown- 
ish ; ten or eleven whorls, marked with faint oblique striaB ; aperture 
with two or three teeth : both are from Chusan. 
Pupa Hoppii, Muller (Groenl. p. 4) ; testa detrorsa, cylindracea, 
obtusa, laevi ; columella bidentata. 
The Cyclostoma cuvierianum and Melanostoma Petit, formerly 
described in the Rev. Zook 1841, have been figured in the Magas, de 
Zool. 1842, pi. 55, 56. 
Cyclostoma Gironnierii, Souleyet (Rev. Zool. 1842, p. 101) ; orbi- 
cular ; umbilicated ; white with brown spots ; chestnut brown beneath ; 
22 mill. : Lu 9 on. C. maculosa, id. \h.’, bulged and spherical; umbili- 
cated, with a keel, with yellow and brown lines and spots ; 14 mill. : 
Lu9on. 
D’Orbigny has described several species of Cyclostoma m the Hist. 
Nat. de Cuba. C. latilahris, allied to C. labeo, but shorter ; conical and 
longitudinally striped. C.ventricosa ; bellied out; pupa-formed; smooth; 
rose-coloured ; anteriorly violet. C. auriculata ; cylindrical ; longitu- 
dinally striped ; umbilicated ; whitish ; anteriorly violet. C. bilahiata ; 
whitish ; rose coloured, with lamellated strias crossways ; aperture with 
two borders. C. pudica ; violet, striated crossways ; margin of aperture, 
above the umbilicus, divided into two flaps. C. Pretrei; white ; umbili- 
cated ; lamellated longitudinally ; spinous across. C. auheriana ; finely 
striated crossways; suture deeply crenated ; labrum simple. C. candeana ; 
furrowed across ; lamella-like striae longitudinal ; suture irregularly 
lameUa-like crenated ; labrum bipartite. C. delatreana ; not umbili- 
cated ; yellow with brown bands ; ribbed lengthways ; striated across ; 
suture crenated ; aperture oval. C.sagra; umbilicated; yellow, spotted 
brownish-red longitudinally and across ; cross striae ; suture simple ; 
aperture oval. C. poeyana; deeply striated across; brownish-yellow 
with red bands ; suture simple ; aperture oval. 
Several new species of Cyclostoma, from the Philippines, are to be 
found described by G. B. Sowerby in the Proc. Zool. Soc. 1842, p. 80. 
C. acuti-marginatum, luzonicum, canaliferum, validum, Stainforthii, 
tuba, philippinarum, altum, pupiniforme. Cyclostoma cincinnatensis 
of Lea (Proc. Amer. Phil. Soc. 1840, p. 289), has this character ; — 
t. elevato-conica, laevi, nitida, diaphana, umbilicata, anfractibus senis; 
apice obtuso, labro margine refiexo: Cincinnati. 
D'Orbigny characterizes a new genus, Odontostoma (the name has been 
already given), in the family of Cyclostoma (Ramon de la Sagra's Hist. 
Nat. rle Cuba, Mollusques, p. 237). It is distinguished from Hdicina 
J71 
