CYCLOSTOMA.—Prare XI. 
bilicated, ovately turreted, white or flesh-coloured ; 
whorls rounded, spirally regularly ridged throughout, 
ridges often alternately larger, interstices decussated 
with striz; aperture nearly circular, sinuated at the 
upper part, lip simple. 
Draparnaup, Hist. Moll. terr. et fluv. p. 33. pl. 13. f. 1. | 
Cyclostoma affinis, Risso. 
Cyclostoma polysulcatum, Potiez and Michaud. 
Cyclostoma Siculum, Sowerby. 
Cyclostoma aurantium, Anton. 
Cyclostoma coloratum, Ziegler. 
Cyclostoma phaleratum, Ziegler. 
Cyclostoma reticulatum, Zeigler. | 
Cyclostoma Melitense, Sowerby. 
Cycloscoma tenellum, Sowerby. 
Hab. Southern Europe and North Africa. 
The principal variation in this species consists in the 
spiral ridges being sometimes uniform in size, sometimes 
alternately larger. 
Species 67. (Mus. Cuming.) 
CycLostoMa CarFrRUM. 
globoso-turbinatd, grised ; anfractibus rotundatis, su- 
Cyel. testa modice umbilicati, 
perne et circa umbilicum tenuiliratis ; apertura pyri- 
formi-circulari, fauce fulvescente, rufo fusciatd. 
Tue Carrre CycLostoma. Shell moderately umbilicated, 
globosely turbinated, grey; whorls rounded, finely 
ridged at the upper part and round the umbilicus ; 
aperture pyriformly circular, interior fulvous, banded 
with chestnut. 
Beck, MS. in Mus. Cuming. 
Hab. —— 2») } 
Dr. Beck, of Copenhagen, named this species in Mr. 
Cuming’s cabinet, and I am unable to identify it with any 
other, though it does not appear in Pfeiffer’s monograph. 
Species 68. (Fig. a, 46, Mus. Cuming.) 
CycLostoma Jayanum. Cyel. testa subanguslé profunde 
umbilicald, ovato-turritd, albidd, strigis latis fuscis 
obliquis ornata ; anfvactibus rotundatis, longitudina- 
liter confertissimé subliliter costulato-striatis, sericinis, 
striis ad suturas plicatis ; aperturd circuluri, parvi- 
usculd, labro late concavo-expanso, aurantio-rnfo, mar- 
ginibus superné sinuato-angulalis. 
Jay’s Cyctostoma. Shell rather narrowly deeply um- 
bilicated, ovately turreted, white, ornamented with 
oblique broad brown streaks; whorls rounded, lon- 
gitudinally very closely finely rib-striated, silky, strize 
puckered into folds at the sutures ; aperture circular, 
rather small, lip broadly concavely expanded, orange- 
red, margins sinuately angled at the upper part. 
Cyclostoma solidum, Adams (not of Menke), Contrib. to 
Conch. No. 1. p. 7. 
Cyclostoma Jayanum, Adams. 
Cyclostoma histrio, Pfeiffer. 
Hab. Jamaica. 
The longitudinal streaks are sometimes abseut or very 
faintly indicated, and delicate spiral bands are visible. 
Vig. 69. (Mus. Cuming.) 
The specimen here figured, at first thought to be a spe- 
cies distinet from any of the preceding, is a smooth va- 
riely of C. Araussianum represented at Pl. IX. Pig. 52. 
