Class W. HELIX. SNAIL. 



####* Ovated, imperforated. 



Lin. Syst. 1249. No. 703. Faun. Suec. No. 2188. 57. stag- 



Gm. Lin. 3657. Lin. Tr. viii. 214. ^/a?^° 



LisL Ar.gl. tub. ii. fg. 21. Mont. Test. Br. 36?. t. l6. 

 Conch, tab. 123. Jig. 2\. /. 8. - ■ ■ 



He. with six spires ; the first very large and 

 ventricose, and the last quite pointed. Very 

 brittle. Length two inches one eighth. 



Inhabits still waters ; is, with others of the 

 kind, the food of trouts. Tah. Ixxxix. Jig. 1. 



LIS. 



Gm. Lin. 3658. Mont. Test. Br. 3Qg. t. \6. 58, fragi- 



Li7i. Tr. viii. 215. /. 7- 



* He. with round, pellucid, imperforate, ovato- 

 subulate shell ; aperture ovate oblong. 

 Found in fresh waters. 



zsi 



