CYCLOSTOMA. 
Prats XIII. 
Species 77. (Mus. Cuming.) 
CycLostoma saccatum. Cyel. testd anguste umbilicatd, 
ovato-turritd, pallidé corned, rufo-fusco multizonata, 
diaphand ; anfractibus paucis, rotundatis, longitudi- 
naliter confertim tenuissime capillaceo-striatis, suturis 
subimpressis ; apertura parviusculd, rotundatd, labro 
tenui, vix reflexo. 
THE BAG-LIKE CycLosToma. Shell narrowly umbilicated, 
ovately turreted, pale-horny, many-zoned with red- 
brown, transparent; whorls few, rounded, longitudi- 
nally closely very finely hair-striated, sutures rather 
impressed; aperture rather small, rounded, lip thin, 
scarcely reflected. 
Prerrrer, Pro. Zool. Soc. 1852, p. 65. 
Hab. ? 
Composed of fewer whorls than is usual with species 
of this type, more widely convoluted towards the base. 
Fig. 78. (Mus. Cuming.) 
The shell here figured is Mr. Sowerby’s C. Melitense, 
which is a Maltese variety of the European C. sulcatum. 
Species 79. (Mus. Cuming.) 
CYCLOSTOMA SALEBROSUM. Cycl. testd anguslé umbili- 
cata, oblongo-turritd, pellucido-alba ; anfractibus sub- 
angustis, rotundatis, spiraliter obscuré liratis, longi- 
tudinaliter confertissimé lamellato-striatis, striis ad 
sutures plicatis ; apertura rotundatd, labro tenué re- 
flexo, interdum dilatato. 
THE novgH CycLostoma. Shell narrowly umbilicated, 
oblong-turreted, transparent-white; whorls rather 
narrow, rounded, spirally obscurely ridged, longitu- 
dinally very closely lamellarly striated, striee plicated 
at the sutures; aperture rounded, lip thinly reflected, 
sometimes dilated. 
Mors xe, Test. Noviss. p. 23. 
Hab. Cuba. 
The surface of this species is quite rough to the touch 
on account of the peculiarly rugged character of the longi- 
tudinal striz. 
Species 80. (Mus. Cuming.) 
CycLostoma CuEvautert. Cycl. testd minute umbilicatd, 
ovato-conicd, pellucido-corned, rufescente-fusco obscure 
punctato-fasciatd ; anfractibus convexis, levibus, lon- 
gitudinaliter subobsoleté striatis; apertura circular, 
labro late plano-dilatato, marginibus subauriculatis. 
CHEVALIER’S CycLostoma, Shell minutely umbilicated, 
ovately conical, transparent-horny, obscurely dot- 
banded with reddish-brown ; whorls convex, smooth, 
longitudinally rather obsoletely striated; aperture 
circular, lip broadly flatly dilated, margins slightly 
auriculated. 
Apams, Contrib. to Conch. No. 9. p. 155. 
Hab. Jamaica. 
Of the same smooth typical character as C. album, from 
the same locality, sculptured in the same manner with sub- 
obsolete longitudinal cord-like striz; but the shell is of 
a delicate transparent-horny substance, faintly banded. 
Species 81. (Fig. a, 46, Mus. Cuming.) 
CycLostomMa RETRORSUM. Cycl. testd minute umbilicatd, 
ovato-turritd, pellucido-corned, ferrugineo tinctd ; an- 
Sractibus rotundatis, lineis spiralibus striisque lamelli- 
formibus longitudinalibus confertim serrato-clathratis; 
apertura circulari, labro latissimé calloso-dilatato, 
retrorso, marginibus plus minus auriculatis. 
THE TURNED-BacK CycLostoma. Shell minutely um- 
bilicated, ovately turreted, transparent-horny, stained 
with rust; whorls rounded, closely serrately latticed 
with spiral lines and longitudinal lamelliform striee ; 
aperture circular, lip very broadly callously dilated, 
turned back, margins more of less auriculated. 
Apvams, Contrib. to Conch. No. 6. p. 91. 
Hab. Jamaica. 
The longitudinal lamelliform striz are roughly serrated, 
and the lip of the aperture 1s remarkably broadly callously 
dilated and turned back. 
Species 82. (Mus. Cuming.) 
CYcLOSTOMA THYSANORAPHE. Cycl. testa angusté um- 
bilicatd, conico-turritd, sericino-albd, rufo-fuscescente 
tincta et obscure fasciata ; anfractibus convemis, longi- 
December, 1861. 
