Phasianella. MOLLUSCA. PECTINIBRANCHIA. 301 
207. T. hicohr ^Smooth, dull, inside white ; whorls two ; pillar-cavity in- 
distinct.— Helix bicolor, Adams, Linn. Trans, v. 4. t. i. f. 25, 26, 27. — Ten- 
bigh. 
208. T. Subpellucid, smooth ; whorls four, the first ventri- 
cose, with red lines ; margin of the aperture very much spread ; no pillar- 
cavity Helix var. Adams, Linn. Trans, iii. 67. — Coast of Pembrokeshire. 
209. T. tubulatus Whorls three, striated ; pillar-cavity produced into a 
marginated tube. Helix tub. Adams, Linn. Trans, iii. 67. — Coast of Pem- 
brokeshire. 
EXTINCT SPECIES. (tuRBO.) 
1 . T. ornatus, — Conical, spirally striated ; three or four tuberculated ridges 
run along each whorl, the middle one the largest — Sower. Min. Conch, 
t. ccxl. f. 1, 2. — In Lower Oolite, Dundry. 
2. T. can»a/M5.— Conical, with five or six spiral crenulated ridges ; whorls 
carinated. — Sower. Min. Conch, t. ccxl. f. 3 — In Green Sand. 
3. T. moniliformis. — Short, conical, spirally striated ; whorls separated 
above by a canal, their edges granulated ; pillar-cavity large, wrinkled — 
Sower. Min. Conch, t. cccxcv. f. 1. — In Green Sand, Blackdown. Probably 
not of this genus. 
4. T. sulcatus — Conical, sulcated spiraUy, striated transversely; whorls 
rounded, separated above by a canal ; pillar-cavity small ; aperture sulcated 
within. — Pilkington, Linn. Trans, vii. 118. t. xi. f. 9. — T. sculptus. Sower. 
Min. Conch, t. cccxcv. f. 2.— In London Clay. 
5. T. conicus. — Ovato-conical, acute, whorls very convex, spirally striated ; 
with a pillar-cavity. — Sower. Min. Conch, t. ccccxxxiii. f. 1. — In Ch-een Sand, 
Blackdown. 
6. T. rotundatus. — Ovate, subglobose, pointed, smooth ; aperture rather 
longer than wide, pointed retrally. — Sower. Min. Conch, t. ccccxxxiii. f. 2. — 
In Green Sand, Blackdown. 
Gen. XLVIII. PHASIANELLA.— Shell conical ; aperture 
lengthened, contracted by the projection of the body- 
whorl ; peristome incomplete retrally ; pillar-lip smooth, 
nearly straight. 
210. P. polita. — Whorls nine or more, conical, strong, flat, 
smooth, closely united. 
Helix pol. Pult. Dorset, p. 49. Mont. Test. Brit. 398. — Turbo albus, 
Don. Brit. Shells, t. clxxvii. — On the English shores. 
Length fths of an inch, breadth i%ths ; aperture oval, contracted retrally 
by the body-whorl. 
211. P. subulata . — Whorls about ten, subulate ; with two 
spiral brown bands along the separating line. 
Turbo sub. Don. Brit. Shells, t. clxxii.— Helix sub. Mont. Test. Brit. 
Sup. 142 — On the English and Scottish coast, not common. 
I.ength about three quarters of an inch ; smooth, glossy, white ; the two 
bands are on the retral edge of the nearly obsolete line of separation ; whorls 
nearly flat ; aperture lengthened, rounded anteally, contracted retrally ; 
6tvter-lip nearly straight. 
