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POPULAR CONCHOLOGY. 



lindrical tentacula; the eyes at the outer base, when 

 present; above the neck a cavity having one or two 

 feather-formed gills, which rarely fail to be present. The 

 shell is cup-shaped, entire, and symmetrical. — Marine. 



AcMiEA. Eschholtz. (Lottia Gray ; Patelloidea Quoy 

 and Gaim.) — Shell like Patella, ovate, 

 conical, surface smooth, with radiating stria- 

 tures, muscular impression dark, horse- 

 shoe-shaped, and interrupted where the 

 head lies. Animal with a single pectinated 

 gill, lodged in a cavity, and protruding 

 from the right side of the neck when the 

 creature moves ; tongue membrane long ; 4 

 two awl-shaped tentacles, bearing the eyes A 

 on the enlarged bases. — 20 species. 



Found on the coasts of Norway, Britain, America, &c. 

 A. testudinalis and virginea are the British species. 



Lepeta. Gray. (Propilidium, Pilidium, Jothea Forbes). 

 — Shell cup-shaped, entirely like Patella, Animal, having 

 no eyes, and two feather-formed gills at the neck ; other- 

 wise resembling Acmcea. — 1 species. 



L. (Patella) c&ca, is found in the North Atlantic Ocean, 

 and is the only species well known. 



Jothea. Forbes. — Shell like Patella. Animal, out- 

 wardly exactly like that of Patella and Acmcea, but it has 

 no eyes, and no trace of gills ; the tongue is armed like 

 that of Lepeta, only the teeth are somewhat differently 

 placed, and particularly the narrow hooks ; and the curved 

 part of the same is cilated. — - 1 species. 



Jothea (Patella) fulva from the northern Atlantic ocean. 



