99 MOLLUSCA. 
4. J. longiuscula, pl. Vi, f. 8.—First Ed., pl. 51, f. 85 
Buccinum longiusculum, Walker, Min. Sh., f. 60; Adams, 
Micros., pl. 14, f. 26. 
Shell taper; consisting of six smooth, glossy, pellucid, gradu- 
ally tapering volutions, well defined by the suture, and termi- 
nating in an acute apex; aperture oblong, slightly contracted 
above, and widened beneath; outer lip thin, even; columella 
smooth, with a tooth-like process near its centre. Length an 
eighth of an inch; breadth not half its length. 
Found in Faversham Creek. 
5. J. obtusa, pl. IX, f. 38.—First Ed., pl. 50, f. 38. 
Shell subeylindrical; with five white, glossy, somewhat tumid, 
and gradually tapering volutions, terminating in an obtuse apex 5 
with five longitudinal ribs; aperture subrotund, slightly con- 
tracted above; outer lip plain; columella with a prominent, 
oblique, tooth-like process near its centre. Length an eighth 
of an inch; breadth not half its length. 
. Found at Dunbar, by General Bingham. 
6. J. pullus, pl. IX, f. 11.—First Ed., pl. 50, f. 11. 
Shell subconic; with six slightly rounded volutions, termi- 
nating in an obtuse apex; the whole shell invested by five flat 
spiral ribs; aperture subovate, slightly contracted above ; outer 
lip plain; columella furnished with a sharp tooth-like process 
near its centre; whole shell of a pale flesh colour, and not 
glossy. 
Found by me on the beach at Montrose. 
7. J.alba, pl. VIII, f. 18.—First Ed., pl. 51, f. 18; Voluta 
alba, Montagu, p. 235; Ib., Sup., p. 101; Walker, Min. Sh., f. 
61; Adams, Micros., pl. 14, f. 27; Maton and Racket, Linn. 
Trans. VIII, p. 130; Turton, Brit. Fauna., p. 170. 
Shell opaque and glossy; with four finely striated volutions ; 
aperture long, narrow, straitened above, and rounded beneath. 
Length a tenth of an inch. 
Found at Sandwich and Shepey Island. 
8. J. insculpta; Turbo insculptus, Montagu, Sup., p. 129 ; 
Odostomia insculpta, Fleming, Brit. An., p. 310. 
“Shell subpellucid, white, and taper; with five or six mode- 
rately convex volutions, finely and regularly striated throughout, 
in a spiral direction; apex obtusely pointed; aperture subovate ; 
pillar lip with a faint duplicature, forming a subumbilicus, and 
furnished with a small tooth. Length one-eighth of an inch; 
breadth one-third its length. 
«“ This rare shell, from the coast of Devon, must not be con- 
founded with the Turbo semistriate, (Rissoa semistriata, p. 11, 
pl. LX, f. 3,) which is vastly broader in proportion, and is desti- 
tute of a tooth.-—Montagu. 
9. J. bidentata, pl. VU, f. 7 —First Ed., pl. 51, f.7; Voluta 
bidentata, Montagu, Sup., p. 100, pl. 30, f. 2. 
Shell strong, thick, conic, smooth, glossy white ; with six or 
seven yolutions, tapering abruptly to an acute apex; a few dis- 
tant, longitudinal, wrinkles undulate the suture; body large, 
occupying two-thirds the length of the shell; aperture narrow, 
somewhat oblique, contracted above, and rounded below; outer 
lip thick, plain; columella much thickened, and folding back 
forms a subumbilicus behind, and provided with three tooth-like 
plications in front. Length a quarter of an inch; breadth about 
half its length. 
Found plentifully on the south coast of Devonshire; and at 
Dunbar, Frith of Forth. 
{ TRACHELIPODA. 
Subdivision 1I,— With teeth on the outer lip. 
10. J. denticulata, pl. VII, f. 6.—First Ed., pl. 51, f. 65 
Voluta denticulata, Montagu, p. 234, pl. 20, f.2; Walker, Min. 
Sh., f. 50 and f. 53, young; Turton, Brit. Fa., p. 170. 
Shell subeylindrical ; with seven or eight gradually tapering, 
flat, semipellucid volutions, terminating in an acute apex; body 
large, in proportion to the size of the spire; aperture oblong- 
oval, nearly half the length of the shell; outer lip furnished 
with two or three tubercles near the margin, and frequently 
with three or four white denticulations within the margin of 
the aperture; columella provided with three or four oblique 
white plice, which are much produced, and have a tooth-like 
appearance. Length nearly half an inch; breadth not a 
quarter. 
This species is subject to some variety in the denticulations 
on the outer lip; some have more and others less, and young 
shells are destitute of them; the plications on the columella 
also vary from two to four, but the usual number is three. 
Found on the shore at Plymouth, and other parts of the 
south Devonshire coast; at Barnstable and Isracomb, in the 
north; near Aberavon, Wales; and at Southampton; Dublin 
Bay, Ireland; and Dunbar, Frith of Forth. 
ll. J. quinguedens, pl. VIII, f. 11—First Ed., pl. 51, 
renlels 
Shell strong, thick, conic, smooth, white, and opaque; with 
six volutions; spire tapering abruptly, and terminating in an 
obtuse apex; aperture a little oblique, narrow, contracted above, 
and rounded below; outer lip thin, provided internally with five 
tooth-like processes, the upper one largest ; columella slightly 
thickened, and furnished with two strong, acute, prominent 
teeth-like processes in front, the upper one cleft. 
quarter of an inch; breadth about half its length. 
I found this shell on the beach at Prestonpans, nine miles 
east of Edinburgh. 
Length a 
Genus 27.—Comin1a.—Brown. 
Shell elongated, tapering to both extremities; spire of medium 
length; aperture elongated and narrow; columella furnished 
with several oblique, spiral grooves, or folds, and subcanaliculate 
at the base. 
1. C. hyalina, pl. VIII, f. 9—First Ed., pl. 51, f. 9; 
Jaminia hyalina ; Voluta hyalina, Montagu, Sup., p. 101. 
Shell with six flat, pellucid, smooth volutions, tapering to an 
obtuse apex, and very indistinctly defined by the extremely 
small line of the suture; body occupying about half the length 
of the shell; aperture much elongated and narrow, a little con- 
tracted above; base truncated and canaliculated; outer lip 
smooth, plain, and sharp at the edge; columella with seyen or 
eight fine, oblique, thread-like plications. Length a quarter of 
an inch; breadth not more than one-third its length. 
Found near Dunbar, by Captain Laskey. 
Famity [V.—Macrostoma. 
Shells auriform, with a very wide spreading aperture, and the 
margins disunited; destitute of a columella and operculum, 
