MOLLUSCA. 
14 
[Trachelipoda. 
Genius XVII.— Pyramis — Brown. 
SHell generally subulate, gradually tapering to a point ; body usually 
short, aud the spire long ; volutions but slightly divided by the suture, and 
seldom inflated ; aperture mostly oblong-ovate, placed nearly perpendicular, 
with its upper angle contracted for the most part ; outer lip rarely con- 
tinuous. 
1. P. suhulatus, pi. IX, f. 64, 65. — First Ed., pi. 50, f. 64, 65 ; Tnrho 
subulatua, Donovan, pi. 172; Helix suhulata, Maton and Racket, Linn. 
Trans., VIII, p. 120 ; Montagu, Sup. p. 142 ; Phasianella-subulata, Fleming, 
Brit. An., p. .301. 
Shell strong, subulate, very smooth and glossy ; consisting of ten per- 
fectly flat volutions, separated by a fine suture, and tapering to a sharp 
pointed apex; aperture oblong-ovate, contracted above; outer lip rather 
thick ; pillar lip slightly reflected on the columeUa ; colour cream-white 
or flesh-colour, with a double spiral band of burnt-sienna colour, which 
becomes obsolete towards the apex. Length of the largest sized specimen 
nearly three quarters of an inch ; breadth not a third its length. Found at 
Weymouth, and in the Frith of Forth. Veiy rare. 
Donovan’s figure has six bands on the body, but we have never met with 
any specimens containing more than two. 
2. P. politus, pi. IX, f. 59, 60. — First Ed., pi. 50, f. 59, 60 ; Helix 
polUa, Montagu, p. 398 ; Maton and Racket, Linn. Trans., VIII, p. 210 ; 
Turbo albus, Donovan, pi. 177 ; Phasianella polita, Fleming, Brit. An., 
p. 301. 
Shell subulate, strong, white, extremely glossy, and quite smooth ; with, 
from niue to thirteen flat volutions, and hardly defined by the suture, 
which is very indistinct in this species : volutions gradually tapering to a 
sharp point ; spire very long ; body short ; aperture oval, slightly contracted 
above ; outer lip thick, but not marginated or reflexed ; pillar lip slightly 
replicated. Length five-eighths of an inch. Found at Exmouth, Devon- 
shire ; Weymouth, Dorsetshire ; South Wales ; the Frith of Forth ; and 
Bantry Bay, Ireland. We procured a fifie specimen from the stomach of a 
haddock, which was taken in the Frith of Forth. 
3. P. elegantisaimus, pi. IX, f. 61. — First Ed., pi. 50, f, 61 ; Helix 
elegantissima, Montagu, p. 298, pi. 10, f. 2 ; Manton and Racket, Linn. 
Trans., VllI, p. 209 ; Walker, f. 39 ; Turritella subulata, Fleming, Brit. 
An., p. 303. 
SheU subulate, glossy, semi-pellucid, white ; with from nine to thirteen 
flat volutions, well defined by the suture ; body very short ; spire long, 
taper, and terminating in an acute apex ; the whole shell covered with 
regular, somewhat oblique, strong longitudinal ribs, which are hardly in- 
terrupted by the line of the suture ; the sulci are moderately deep, but 
not so broad as the elevated ridges ; aperture suborbicular, somewhat 
angulated both above and below; outer lip strong; pillar lip slightly 
reflected on the cohimella. Length a quarter of an inch ; breadth not a 
fourth of its length. Found at Sandwich, Falmouth, Salcomb Bay, Ilfra- 
comb, Devonshire, and Portmarnock, Ireland. 
4. P. crenatm, pi. IX, f. 53. — First Ed., pi. 50, f. 53. 
Shell subulate, white pellucid, with ten volutions, well separated by the 
line of the suture ; body very short, spire very long, and tapering to a 
acute point ; the whole shell covered with strong, longitudinal, straight 
ribs, which are crossed by extremely minute tranverse strife ; aperture 
suborbicular ; outer lip strong ; pfilar lip slightly reflected on the columella. 
Length a quarter of an inch ; breadth about a fourth of its length. Found 
at Belton Sands, near Dunbar, by General Bingham, in his Cabinet. 
This species may be easily mistaken for Pyramis elegantissimus, but 
differs in the ribs being quite straight, and in being transversely striate 
5. P. subarcuatus, pi. IX., f, 62. — First Ed., pi. 50, f. 62 ; Turbo aubar- 
cuatus, Adams, Linn., Trans., Ill, p. 66, pi. 13, f. 27, 28 ; Maton and 
Racket, Linn. Trans. , III, p. 185 ; Montagu, p. 333. 
" Shell pellucid, white, and a little curved towards the tip, with ten 
longitudinally ribbed volutions; colour white.” — Adams. Probably only 
a distorted variety of P. elegantissimus. Found on the coast of Pembroke- 
shire. 
6. P. unicus, pi. IX, f. 46.— First Ed., p. 50, f. 46 and 48 ; Turbo unicus, 
Maton and Racket, Linn. Trans., VTII, p. 174 ; Montagu, p. 299, pi. 12, 
f. 2 ; Turbo albidus, Adams, Micros., pi. 14, f. 17 , Turritella unica, 
Fleming, Brit. An., p. 303. 
Shell subulate, with nine slender, glossy, pellucid, white, well-rounded 
volutions : body very short, spire very long, terminating in a fine point 
the whole shell invested with fine longitudinal, somewhat undulating 
ridges, and the intermediate spaces covered with extremely fine transverse 
strim, which can only be seen by the aid of a strong lens ; aperture subor- 
bicular, inclining to oval. Length two-tenths of an inch ; breadth about 
a fourth its length. Foimd on the Devonshire and Welsh coasts ; and at 
Dunbar, by General Bingham. 
7. P. indistinctus, pi. IX, f. 47. — First Ed., pi. 50, f. 47 ; Montagu, 
Sup. p. 129 ; TuiTitella indistinda, Fleming, Brit. An., p. 304. 
Shell subcylindrical, glossy, white ; with six nearly flat volutions, ter- 
minating in a somewhat obtuse apex, but well-defined by the line of the 
suture ; the whole shell is very finely ribbed longitudinally, and slightly 
and indistinctly punctured iu the furrows, which can only be seen by the 
aid of a powerful lens, through which it appears cancellated ; these trans- 
verse striae are confined to the sulci, and do not cross the ribs ; aperture 
subovate ; outer lip thin, expanded ; pillar lip a little spread on the colu- 
mella. Length an eighth of an inch ; breadth one-third its length. 
Found at Sandwich, and at Belton Sands, near Dunbar, by Genera 
Bingliam. 
8. P. subtruncatus, pi. IX, f. 49, 50. — First Ed., pi. 50, f. 49, 50 ; 
Turbo s^abtruncatvs, Montagu, p. 300, pi. 10, f. 1 ; Turritella subtruncata, 
Fleming, Brit. An., p. 303. 
Shell subcylindrical, with six or seven rounded, smooth, pellucid, yeUowish- 
white volutions ; slightly tapering, and terminating in an obtuse apex, with 
strong longitudinal striae ; aperture suborbicular, somewhat inclining to 
oval. Length three-tenths of an inch ; breadth not half its length. Found 
on the Southampton coast, at Salcomb Bay, and at Belton Sands, near 
Dunbar, by General Bingham. 
Colonel Montagu had described this species from worn specimens, as 
ours are all distinctly striate. 
9. P. nivosus, pi. IX, f. 25, 26. — First Ed., pi. 50, f. 25, 26 ; Turbo 
nivosus, Montagu, p. 326 ; Manton and Racket, Linn. Trans., VIII, p. 163 ; 
Turbo nivosus, Fleming, Brit. An., p. 300. 
SheU subcylindrical, smooth, white, peUucid, with five slightly produced 
volutions, but well separated by the raised, thread-like, spiral line of the 
suture, terminating in an obtuse apex; body somewhat longer than the 
spire, the base furnished with a series of spiral strife, which reach to the 
upper margin of the outer lip in front ; aperture suborbicular, much turned 
to one side ; outer lip smooth, a little thickened, continuous ; piUar lip 
considerably reflected on the columella, with a slight subumbihcus behind. 
Length not quite an eighth of an inch ; breadth not half its length. 
Found on the south coast of Devon, very rare, and at Belton Sands, near 
Dunbar. 
This species has much the appearance of Jaminea interstincta, but is 
destitute of both the tooth and ribs. 
Colonel Montagu has overlooked the transverse strise at the base of the 
shell. 
10. P. Candidas, pi. IX., f. 31. — First Ed., pi. 50, f. 31. 
Shell semicyliudrical, rather strong, blueish-white, and glossy : consisting 
of five volutions, slightly separated by the line of the suture, and terminat- 
ing in a rather obtuse apex ; body somewhat longer than the spire ; the 
whole shell covered with very fine spiral striae ; aperture subovate ; flattened 
at the base of the cohimeUa ; outer lip smooth, somewhat thickened ; pillar 
lip very slighted reflected on the columeUa. Length a little more than an 
eighth of an inch ; breadth not half its length. Found at Belton Sands, 
near Dunbar, by General Bingham. 
11. P. discuj-s, pi. IX, f. 32. — First Ed., pi. 50, f. 32. 
Shell subcylindrical, strong, snow-white, and glossy ; five rather pro- 
duced, slightly-divided volutions,, and terminating in a rather obtuse apex ; 
body and two lower volutions of the spire covered with close, regular, 
spiral strise ; these are aU crossed at top by numerous, short, longitudinal 
furrows ; aperture semiovate, a little contracted at its upper angle, and 
slightly flattened on the pillar side ; outer lip smooth, somewhat thickened ; 
pillar lip slightly reflected on the columella. Length an eighth of an inch ; 
breadth not half its length. Found at Belton Sands, near Dunbar, by 
General Bingham. 
This species is nearly allied to P. Candidas, but it is broader in propor- 
tion to its length, the strise are wider, the spire shorter, the aperture 
longer and different in shape, and the furrows at the upper margin of the 
three lower volutions, all distinguish it from that shell. 
12. P. IcBvis, pi. IX, f. 51-52. —First Ed., pi. 50, f. 51-52. 
SheU subulate, snow-white, shining, consisting of eight greatly pro- 
