320 HELIX. SNAIL. Class VL 



3. PLANOR- Lin. Syst. 1242. No. 662. Faun. Suec. No. 2176. 



BIS. Gm. Lin. 3617. Lin. Tr. viii. 188. f. b.f. 13. 



List. Angl. tab. ii. fig 27. H. complanata. Mont. Test. 

 Gualtieri, tab. iv. fig. E. E. Br. 450. 



He. with a very flat brown shell, slightly cari- 

 nated on the outside ; aperture oblique. 

 Inhabits ponds. Tab. Ixxxvi. Jig. 2. 



4. PLANATA. Lin. Tr. viii. I89. 



* He. with a carinated, umbilicated plane shell, 

 the carina or ridge on the middle of the volu- 

 tion ; aperture nearly oval ; diameter half an 

 ' inch. 



5. VORTEX. Lin. Syst. 1243. No. 667. Faun. Suec. No. 2178. 



^^^'■^- Gm. Lin. 3620. Lin. Tr. viii. I89. 



List. Angl. tab. ii. fig 28. 3Iotit. Test. Br. 454. id. Sup. 



Gualtieri, tab. iv. fig. G. G. t. 25. /. 3. 



List. Co7ich. tab. 13S. fig. 43. ' 



He. with a very flat thin shell, and six small 

 spires. The outmost carinated. 



Found with the H. plaiwrbis. Tab. Ixxxvi. 

 M 3. 



