CYCLOSTOMA. 
Prats XVI. 
Species 100. (Mus. Cuming.) 
Cyctostoma Nov#-Hipernim. Cycl. testd minuté pro- 
Sunde umbilicatd, acute turbinata, rufuld ; anfractibus 
subangustis, rotundatis, levibus ; apertura circulari, 
labro tenué dilatato, marginibus subalatis. 
Toe New Iretanp Cyciostroma. Shell minutely deeply 
umbilicated, sharply turbinated, red ; whorls rather 
narrow, rounded, smooth; aperture circular, lip 
thinly dilated, margins somewhat winged. 
Quoy and Gaimarp, Zool. Voy. de l’Astrolabe, vol. ii. 
p. 182. pl. 12. f. 15 to 19. 
Cyclostoma vitreum, Sowerby. 
Hab. Port Carteret, New Ireland. 
A sharply turbinated smooth species of a peculiar 
orange-red hue. 
Species 101. (Mus. Cuming.) 
CycLostoma GRatuM. Cycl. testa minute profundé um- 
bilicatd, ovato-turritd, solidiusculd, awrantio-carned, 
nitiduld ; anfractibus convexis, undique subtilissimeé 
subobsoleté spiraliter liratis ; apertura circulari, fauce 
vividée aurantio-rufa, labro simplici, albo, superneé 
sinuato. 
THE WELCOME CycLosToMa. Shell minutely deeply um- 
bilicated, ovately turreted, rather solid, orange-flesh- 
coloured, shining ; 
finely obsoletely spirally ridged; aperture circular, 
interior bright orange-red, lip simple, white, sinuated 
at the upper part. 
Petit, Journ. Conch. vol. i. p. 538. pl. 3. f. 10. 
Hab. Island of Abd-el-Goury, 
A very characteristic strikingly coloured little species. 
whorls convex, everywhere very 
Species 102. (Mus, Cuming.) 
CycLostoMa LEvE. Cycl. testd minute umbilicatd, turbi- 
natd, pellucido-corned, rubellé ; anfractibus convevis, 
levibus; aperturé circulari, subamplé, labro tenut, 
subdilatato. 
THE LIGHT Cyctostoma. Shell minutely umbilicated, 
turbinated, transparent-horny, reddish ; whorls con- 
vex, smooth; aperture circular, rather large, lip thin, 
slightly dilated. 
Preirrer, Pro. Zool. Soc. 1855, p. 118. 
Hab. Solomon’s Island. 
A smooth semi-transparent reddish-horny shell. 
Fig. 108. (Mus. Cuming.) 
This very delicate and pretty shell is Professor C. B. 
Adams’ C. nitens, which is regarded as a variety of C. 
Auguste, and will be described under that species. 
Species 104. (Fig. a, 4, Mus. Cuming.) 
CycLostoma FUSCULUM. Cycl. testa subampliter umbili- 
cata, abbreviato-turbinatd, pellucido-fuscd, infra peri- 
pheriam purpureo-unifasciata ; anfractibus declivi- 
convexis, undique spiraliter striatis et piloso-carinatis, 
carinis albidis ; apertura obliqué circulari, subumplé, 
labro expanso-reflexo, albido, marginibus sublaminatis. 
THE BROWN CycLostoma. Shell rather largely umbili- 
cated, shortly turbinated, transparent-brown, one- 
banded with purple below the periphery ; whorls 
slopingly convex, everywhere spirally striated and 
thread-keeled, keels whitish ; aperture obliquely cir- 
cular, rather large, lip expandedly reflected, whitish, 
margins slightly laminated. 
PreIFrer, Pro. Zool. Soc. 1851, p. 251. 
Hab. p 
A beautifully defined species of a bright semi-trans- 
parent-brown colour, encircled with fine glassy-white 
thread-like keels. 
Species 105. (Mus. Cuming.) 
CycLosToMa SULCULOSUM. Cyel. testa angustissimé um- 
bilicatd, oblongo-turritd, opaco-albd, carneo-tinctd, 
solidiusculd, spird papillari-truncata ; anfractibus con- 
vexis, spiraliter undique confertim liratis, liris striis 
lonyitudinalibus capillaceis minutissimé decussatis, 
suturis subobscuré plicato-crenatis ; apertura parvd, 
abliqud, labro fimbriato, marginibus subalatis. 
THE GRoovED CycLostoma. Shell very narrowly um- 
bilicated, oblong-turreted, opaque-white, tinged with 
flesh-colour, rather solid, spire papillary truncated ; 
whorls convex, spirally closely ridged throughout, 
December, 1861. 
