INVOLUTE. | 
Shell with from nine to twelve taper, turreted, deeply divided 
volutions, terminating in an acute apex; the whole length of the 
shell invested with from nine to twelve regular, longitudinal, ob- 
lique, high, distant, membranaeous ribs; aperture orbicular, its 
margin thickened by a rib that surrounds it; colour white, some- 
times with a few transverse fillets of brown or brownish red. 
Length an inch and a half; diameter at the base half an inch; 
provided with a coriaceous, black, and spirally striated oper- 
culum. 
Found at Falmouth, Cornwall, the south coast of Devonshire, 
Dorsetshire, and Kent ; Montagu procured it alive, at the Salt- 
Stone, estuary of Kingsbridge, of a superior size; found also in 
Dublin Bay and Portmarnock, Ireland, plentiful; and at Dun- 
bar, sparingly, according to Captain Laskey. 
2. SS. clathratulus, pl. VIL, f. 12—First Ed., pl. 51, f. 125 
Turbo clathratulus, Turton’s Linnzus, IV, p. 500; Ib. Brit. 
Fauna, p. 179; Adams, Micro., pl. 14, f. 19; Montagu, p. 297; 
Sup., p. 124; Maton and Racket, Linn. Trans., VIII, pl. 5, f. 
1; Walker, Min. Sh., f. 45. 
Shell with five or six taper, turreted, deeply divided volutions ; 
with from fifteen to seventeen close-set, oblique, longitudinal, 
very delicate ribs; aperture orbicular; lip thickened by a rib. 
Length about half an inch. 
Found sparingly on the south Devonshire coast, Weymouth, 
and Dunbar. 
3. S. Turtoni, pl. XX1* f.1, 2; Scalaria Turtoni, Turton, 
Conch. Dic., p. 208, f. 97; Fleming, Brit. An., p. 311; Ency. 
Meth, pl. 451, £3; Turbo clathratus, var., Donovan, Brit. Sh., 
pl. 28, lower fig. 
Shell with about twelve deeply divided volutions, and twelve 
longitudinal strong ribs, the intermediate spaces spirally striate ; 
colour pale brown, with two or three dark reddish brown spiral 
bands, and the ribs crossed by the same colour; aperture orbicu- 
lar ; lips white, thickened by a rib, a little reflected. Length 
two inches; breadth nearly three-quarters. 
Found in Dublin Bay and Balbriggin, Ireland. 
Famity III.—P.uicacka. 
Shell with the aperture somewhat contracted, and the’colu- 
mella plaited. 
Genus 25.—TorNATELLA.—Lamarck. 
Shell oval, oblong, or cylindrical, usually transversely striate, 
and destitute of epidermis; spire generally very short, and some- 
what obtuse, but elongated and subacute in some species; aper- 
ture longitudinal, elongated, entire, with the outer lip simple, 
acutely edged, and sometimes with a slight contraction and in- 
crassation; inner lip thin, and but slightly spread; columella 
spiral, with one or several folds at its base. 
1. T. fasciata, pl. VIII, f. 4, 5—First Ed., pl. 51, f. 4, 55 
Tornatella fasciata, Lamarck, VI, pt. 2nd, p. 220; Tornatella 
tornatilis, Fleming, Brit. An., p. 336; Voluta tornatilus, Mon- 
tagu, p. 231; Pennant, Brit. Zool., IV, p. 117, pl. 71, f. 86; 
Donovan, Brit. Sh., II, pl. 57; Turton, Brit. Fau., p. 170. 
Shell oval; body large in proportion to the spire; with eight 
gently rounded volutions, abruptly tapering to an acute apex, and 
well defined by a deep channelled suture; upper part invested by 
F 
MOLLUSCA. 21 
five, somewhat irregular, spiral striw, descending to the base of 
the lower band, from whence to the base of the body it is pro- 
vided with a series of five transverse ribs, the interstices between 
them crossed by strong longitudinal striz ; aperture long, nar- 
row, much straitened above, and widened below, by the narrow- 
ing of the basal region of the body; outer lip thin, plain above, 
but crenulated on its lower margin by the basal ribs; columella 
provided with one plait near the retal extremity; colour purplish 
red, the body volution ornamented with two transverse, spiral, 
white bands, usually bordered with a darker shade of purplish 
red, and the upper white band proceeds continuously to the apex, 
on each side of the suture; columella and lower portion of the 
outer lip, within, in full grown shells, of a rich rusty brown. 
Length three-quarters of an inch. 
Found at Teignmouth and Exmouth, Devonshire ; Wey- 
mouth, Dorsetshire; Anglesea and Longhorne, Wales; Port- 
marnock, Ireland; Dunbar, Tyne Sands and Leith Roads, Frith 
of Forth. 
Genus 25.—JAmin1s—Bruguiére. 
Shell ovate, destitute of epidermis ; spire generally short ; 
aperture elongated; pillar lip furnished with plaits or teeth; 
outer lip smooth and entire, or toothed in some species. 
Subdivision I— Without teeth on the outer lip. 
1. J. plicata, pl. VIII, f. 10—First Ed., pl. 51, f. 10; 
Voluta plicata, Montagu, p. 325, pl. 21, f. 2; Turton, Brit. 
Fau., p. 170; Odostomia plicata, Fleming, Brit. An., p. 310. 
Shell smooth, glossy, subpellucid, and white; with six some- 
what slender, well defined, volutions, terminating in an obtuse 
apex ; aperture suboval, somewhat contracted above, and rounded 
at the lower extremity; outer lip sharp and even; inner lip 
thickened, and provided with a single tooth-like plait. Length 
an eighth of an inch; breadth one-third its length. 
Found in sand from Salcomb Bay ; but rare. 
2. J. interstincta, pl. IX, f. 10.—First Ed., pl. 50, f. 10; 
Turbo interstinctus, Adams, Linn. Tr., III, p. 66, pl. 13, f. 23, 
24; Montagu, p. 324, pl. 12, f.10; Voluta interstincta, Turton, 
Brit. Fauna., p. 170; Odostomia inter'stincta, Fleming, Brit. 
An., p. 310. 
Shell with five white, glossy, rather flat, taper volutions, sepa- 
rated by a small suture, and terminating in an obtuse apex; the 
whole shell covered by fine longitudinal ribs; outer lip entire, 
thin; pillar lip slightly reflected, and provided with a single 
tooth. Length one line; breadth a third of its length. 
Found in sand from Bigberry Bay, Devonshire; but very 
rare. 
3. J. unidentata, pl. IX, f. 44, 45 —First Ed., pl. 50, f. 44, 
45; Turbo unidentatus, Montagu, p. 324; Voluta unidentata, 
Turton, Brit. Fa. p. 170; Odostomia unidentata, Fleming, 
Brit. An., p. 310. 
Shell conic, strong; with five or six slightly inflated, white, 
smooth, glossy, subpellucid volutions, terminating in rather an 
obtuse apex; aperture suboval, slightly contracted above; outer 
lip plain; columella furnished near the middle with a single 
tooth. Length two-tenths of an inch; breadth about one-half 
its length. 
Found in deep water in Salcomb Bay, Devonshire ; and at 
Dunbar, Frith of Forth. 
