, PLATE XCIII. 



HELIX TENTACULATA." 



KERNELy OR OLIVE WATER SNAIL, 

 • GENERIC CHARACTER. 



Aperture of the mouth contracted and lunulated. 



SPECIFIC CHARACTER 



AND 



SYNONYMS. 



Shell without umbilicus, sub-conic, five spires. Aperture rather 

 oval. 



Helix tentaculata: testa imperforata ovata obtusa Impura, aper« 

 ture subovata. Linn. Si/st. Nat. p. 1249. 

 71. 707. 



Cochlea parva pelluclda, operculo testaceo cochleatoque clausa. List. 

 If. Conch, tab. 132. fig. 32. 



Cochleola oblonga fluviatilis, common small river snail. Petiv. Gas. 

 tab. 18. Jig. 8. — Small fresh water turbo 

 with five wreaths. Wallis Northumb. p. 370. 



Turbo imperforatus parvus subrufus, I:Evis, quinque spirarum. Nu- 

 cleus. Da Costa, Br. Cvnch.p. dl.sp. 50. 



