55 
r SIGARETUS. 
NERTC CHARACTER : The shell earshaped, nearly 
orbicular; left lip short and spiral; aperture entire, much 
* «#ted, rounded, oblong; margins not united. 
• PERSPICUUS. Bulla Ilaliotoidea. Mont. Test. Brit., 
\° 2 > P- 211. pi. 7, fig. 6. S. Haliotoideus. Flem. Brit. 
I P- 300. S. P. Forbes, Fauna Monensis, p, 29. 
blbtained from near the Land’s-end. 
PLICACEA. 
Aperture of the shell not effuse; columella plaited. 
q TORNATELLA. 
f ERIC CHARACTER: The shell convolute, ovate 
c .Vlindrical, mostly striated transversely ; no epidermis ; 
®Pert nre oblong, entire, the right lip sharp ; one or more 
’p' 1 on the columella. 
y ORNATILIS. Voluta T. Turt. Lin. Pen. Brit. 
5 10 -’ vol. 4, pi. 71, fig. 80. T. T. Flem. Brit. An., 
'• 330. I have only seen two specimens; which were 
■p Procured from the west of the County. 
• BENTICULATA. Voluta D. Mont. Test. Brit., 
0| - 1, p. 231. Acteon D. Flem. Brit. An., p. 337. A 
‘Pecimen from the Land’s-end. 
SCALAR TANA. 
ti rc ll bout plaits on the columella ; margins of the aperture 
0*rly united. Shells of this family have a tendency to 
<1 Q V, a loose spire, so that the whorls are often disunited and 
3 Hi 
— i j ^ oHwi uiouiiutu aim 
c res l °n one another. This is so remarkable in the 
s Verrnetus, that its most proper place would seem to be 
f 0reji S l be Serpulaceaa; but the shell is not attached to a 
5nin, P being commonly twisted together; and the 
o f( j >s altogether different, not being of the annulated 
r > hut a true mollusc. Jour. Science. 
0£ VERMETUS. 
r ™ERIC CHARACTER: Shell thin, tubular, loose 
> adhering by the spire. Aperture orbicular, margins 
% V ' rx" Operculum cartilaginous. 
Vol ^ TORTUS. Vermiculuin I. Mont. Test. Brit.., 
X P- 320, Flem. Brit. An., p. 233. Not uncommon. 
Vol o ]F °RATUS. Vermiculuin P. Mont. Test. Brit., 
So ri j ■ P* 519. “ We have found it in Cornwall, and 
Wi^i e *- IIUe a with the small interior compartment worn off 
f 0 , Rives it the appearance of being naturally per- 
ra ted.” Montagu. 
GEvp scalaria. 
more C CHARACTER: The shell sublurreted, spire 
e °v less elongated, the last whorl rather larger than the 
