126 NERITA. NERITE. 
length about half an inch 3 breadth two-thirds of its 
length. 
On the Western coasts : very rare. v.tn. 
5. Nerita rufa. Rufous Nerite. 
Lister , pi. 606. f. 34— Montagu, pi. 30. f. 3. 
Shell smooth, glossy, of a livid purplish color: spires 
four, the body-one very large, with two or three white 
bands which are continued in a single belt round the others; 
the second volution very tumid : aperture roundish-ovd; 
the pillar-lip reflected and forming a large projection which 
narrows the perforation and occasions an indenture on each 
side : diameter more than half an inch. 
It is distinguished from all the numerous varieties of 
Turboin having the perforation placed behind the 
pillar-lip, and not on the flattened surface of the pillar it¬ 
self at the termination of a groove 3 a circumstance which 
is never known interchangeably to vary. 
On the Dunbar coast: very rare. 
6 . Nerita litoralis. Strand Nerite. 
Lister , pi. 60/. f. 39 to 42— Pennant , pi. 90. f. 3—Da 
Costa , pi. 3. f.17, and pi. 4. f. 2, 3— Donovan , pi. 20. f.2— 
Linn. 'Trans, viii. pi. f>. f. 16— Dorset Cat. pi. 16. f. 13 to 
16, and pi. 20. f. 2, 3. 
Shell thick, strong, often very faintly striate transversely 
and wrinkled across : spires four or five, the lesser ones 
much flattened to the body volution so as hardly to be di- 
stingulshed, except by a depressed spiral line 3 sometimes 
a little produced 5 rarely somewhat elongated and raised 
into a ridge on the middle of the body volution : color va¬ 
rious shades of yellow, green, brown, or cliesnut, some¬ 
times spotted or chequered, or marked with colored spiral 
bands : aperture nearly orbicular 3 the outer-lip thickened, 
with a thin edge elongated towards its attachment to the 
body volution 5 pillar-lip thick, flattened, glossy, with very 
rarely a puncture at the top like an incipient perforation; 
inside generally colored, and sometimes spotted with 
white: length three-quarters of an inch 3 breadth hardly as 
pinch. 
Op all rocky coasts, v. v\ 
7. Nerita 
