CYCLOSTOMA.—Puiatr XVI. 
ridges very minutely decussated with longitudinal 
hair strize, sutures somewhat obscurely plicately cre- 
nated ; aperture small, oblique, lip frilled, margins 
shghtly winged. 
FERussac, Kiister, Conch. Cab. pl. 41. f. 15, 17. 
Cyclostoma suturale, Férussac. 
Hab. Guadaloupe. 
As may be gathered from the foregoing description, 
there is a great deal of well-defined character in this 
species. 
Species 106. (Fig. a, 0, Mus. Cuming.) 
CycLosTOMA LIGATULUM. Cycl. testd minute umbilicaté, 
conico-turbinata, carneo-albidd, rufo-fusco subtiliter 
lineata et unifasciatd ; anfractibus convewis, superné 
minute subobsolete spiraliter liratis, deinde laevibus ; 
apertura circulari, labro simplict. 
THE FINELY-BoUND CycLostoma. Shell minutely um- 
bilicated, conically turbinated, flesh-white, finely 
lineated and one-banded with red-brown; whorls 
convex, minutely rather obsoletely spirally ridged at 
the upper part, then smooth; aperture circular, lip 
simple. 
GrateLoup, Act. Soc. Linn. de Bordeaux, vol. xi. p. 445. 
pl. 3. f. 20. 
| not grooved anywhere. 
Hab. Madagascar. 
M. Grateloup is mistaken in saying that this species is 
There are grooves and corre- 
sponding ridges round the upper part of the whorls, but 
they are extremely faintly indicated. 
Species 107. (Mus. Cuming.) 
CycLostoMa TENUE. Cycl. testd minute umbilicatd, 
conico-turbinata, fulvd, rufescente multifasciatd, fascia 
purpurea infra peripheriam ; anfractibus convents, 
ventricosiusculis, levibus, superné substriatis ; aper- 
turd circulari, labro simplict. 
Tur THIN Cycrtostoma. Shell minutely umbilicated, 
conically turbinated, fulvous, many-banded with pale- 
red, with a purple band beneath the periphery ; 
finely 
striated round the upper part; aperture circular, lip 
simple. 
Sowersy, Thesaurus Conch. p. 138. pl. 31. f. 265. 
Hab. Africa. 
It is a little doubtful whether this and the preceding 
are not varieties of the same species. 
whorls convex, rather ventricose, smooth, 
