PLATE XX. 



Cornv/all, Src. llie same species is found in the Mediterranean and 

 the West Indies. The colours are very fine, particularly in the young 

 Shells. 



FIG. II. II. 

 NERITA LITTORALIS, 



SPECIFIC CHARACTER 



AND 



SYNONYMS. 



Shell thick, smooth vertex flat. Inner lip spread obliquely. 



Nerita LiTTORALis ; T. telhi la:vi, vertice carioso, labiis edentulis, 



Lin. Sj/st. Xat. p. 1253. No. 724. 

 Xcrita vulgaris, unlcolor, flavus aurantiacus, vel fuscus, aut fasciatus, 

 aut rcticulatim variegatus. Littoralis. 

 Da Costa, Br. Conch, p. 50. $p. 28. 

 List. H. Conch, tab. 697, Jig. 39. 

 Nerita Littoralis. Strand. Pen. Br. Zool. No. 143. tab. Sl.fg. 143. 



This Shell is very common on all the British coasts, particularly 

 the fine yellow kinds. I'hose with broad bands or girdles, and also 

 such as are reticulated with dark greenish colour on a light ground, 

 are rare varieties of this species. 



