PLATE CXLVIL 



PATELLA LACUSTRIS. 



LAKE LIMPET. 

 GENERIC CHARACTER. 



Animal Limax. Shell univalve, subconic, without spire. 



SPECIFIC CHARACTER 



AND 



SYNONYMS. 



Shell very entire, oval, membranaceous : crown pointed and reflected. 



Patella lacustris : testa integerrima ovali membranacea : vertice 



mucronato rerlexo. Fn. suec. 2200. — Gmel. 



Syst. Nat. T. 1. p. 6. 

 Patella fluviatilis, fusca, vertice mucronato, incurvo, inflexoque. 



Gualt. Ind. Conch, tab. 4. Jig. B. 

 Patella fluviatilis, exigua, fubflava, vertice mucronato, inflexoque. 



List. Hist. Conch, tab. l^l.jig. 39. 



Morton Northamp. p. 417. 

 Patella lacustris, Penn. Brit. Zool. 4. No. 149. 

 Patella integra, exigua, fusca, fragilis, vertice inflexo. Da, 



Costa. Brit. Conch. 1. tab. 2. Jig. 8. 8. 



This is a thin and brittle shell, of a pale brown, or whitish 

 colour, that is found on aquatic plants, in most ponds and rivers in 



