Involute.] 



MOLLUSCA. 



21 



Shell with from nine to twelve taper, turrcted, 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. S. clathratulus, pi. VIII, f. 12.— First Ed., pi. 51, f. 12; 

 Turbo clathratulus, Turton's Linnanis, IV, p. 500 ; lb. Brit. 

 Fauna, p. 179; Adams, Micro., pi. 14, f. 19; Montagu, p. 297; 

 Sup., p. 124 ; Maton and Racket, Linn. Trans., VIII, pi. 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, pi. XXI,* f. 1, 2 ; Scalaria Turtoni, Turton, 

 Conch. Die, p. 208, f. 97; Fleming, Brit. An., p. 311 ; Ency. 

 Meth., pi. 45 1 , f. 3 ; Turbo clathratus, var., Donovan, Brit. Sh., 

 pi. 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. 



Family III. — Plicacea. 



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, pi. VIII, f. 4, 5 First Ed, pi. 51, f. 4, 5 ; 



Tornatella fasciata, Lamarck, VI, pt. 2nd, p. 220; Tornatella 

 tornatilis, Fleming, Brit. An, p. 336; Voluta lornatilus, Mon- 

 tagu, p. 231 ; Pennant, Brit. Zool, IV, p. 1 17, pi. 71, f. 86 ; 

 Donovan, Brit. Sh, II, pi. 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 



five, somewhat irregular, spiral stria;, 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 stria? ; 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 Longhome, Wales ; Port- 

 marnock, Ireland; Dunbar, Tyne Sands and Leith Roads, Frith 

 of Forth. 



Genus 25 — Jaminia. — Bruguiere. 

 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, pi. VIII, f. 10 First Ed, pi. 51, f. 10; 



Voluta plicata, Montagu, p. 325, pi. 21, f. 2; Turton, Brit. 

 Fau, p. 170; Odostomia pjlicata, 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. interslincta, pi. IX, f. 10 — First Ed, pi. 50, f. 10; 

 Turbo interstinctus, Adams, Linn. Tr, III, p. 66, pi. 13, f. 23, 

 24; Montagu, p. 324, pi. 12, f. 10; Voluta interslincta, Turton, 

 Brit. Fauna, p. 170; Odostomia interstincta, 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, pi. IX, f. 44, 45— First Ed, pi. 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. 



