PLATE XCIII. 



HELIX TENTACULATA. 



KERNEL, 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. Sj/st. Nat. p. 1249. 

 n. 707. 



Cochlea parva pellucida, operculo testaceo cochleatoque clausa. List. 

 H. Conch, tab. 132. fig. 32. 



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

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

 with five wreaths. Wallis Northumb. p. 370. 



Turbo imperforatus parvus subrufus, laevis, quinque spirarum. Nu- 

 cleus. Da Costa. Br. Conch, p. 91. sp. 50, 



