}26 NERITA. NEEITE. 



length about half an inch 3 breadth two*thircls of its 

 ]ength. 



Qn the Western coasts : very rare. v- m. 



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-oval ; 

 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 

 Turbo canalis, in 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 ; a circumstance which 

 is never known interchangeably to vary. 



On the D unbar coast : very rare. 



6. Nerita litoralis. Strand Nerite. 



Lister, pi. 607. f. 39 to 42 Pennant, pi. 90. f. 3 Da 

 Costa, pi. 3. f. 7, nd pi. 4. f. 2, 3 Donovan, pi. 20. f. 2 

 Linn. Trans, viii. pi. 5. f. 1 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- 

 stinguished, except by a depressed spiral line ; sometimes 

 a little produced; rarely somewhat elongated and raised 

 into a ridge on the middle of the body volution : color va- 

 rious shades of yellow, green, brown, or chesnut, some- 

 times spotted or chequered, or marked with colored spiral 

 bands : aperture nearly orbicular ; the outer-lip thickened, 

 with a thin edge elongated towards its attachment to the 

 body volution ; 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 j breadth hardly as 

 much. 



On all rocky coasts, v. v. 



1. Nerita 



