540 HELIX SNAIL. Class VI. 



59. PALUS- Lin. Tr. viii. 2l6. t. 5. /. 8. H. stagnalis. B. Br. Zool. iv, 

 TRIS. MonL Test. Br 373. t. 1(5. 139- 



/. 10. id. Sup. 138. 



* He. ^vith an oblong shell ; volutions some- 

 what rounded ; aperture ovate ; most delicately 

 striated spirally and transversely; length one 

 inch, breadth three eighths of an inch. 



Found in ditches and rivulets. Tab. Ixxxix. 

 ^•2 - ■■ l .' 



60, FOSSA- Lin. Tr. viii. 21?. t. 5. Mont. Test. Br. 372. t. 10. 

 ^^''' /. 9- /■ 9- 



* He. with a subovate shell, having five or six 

 rounded volutions ; suture conspicuous ; aper- 

 ture ovate ; delicately pellucid ; it greatly re- 

 sembles the //. pahistris, but is not striated, 

 and is inferior in size ; length three eighths of 

 an inch, breadth one eighth. 



Found in ditches. 



Cl. DETRiTA. Lin. Tr. viii. 217- Mo7it. Test. Br. 384. /. 11. 



/■I. 



* He. with a conic shell, whitOj with transverse 

 brown lines ; aperture ovate ; length three 

 quarters of an inch, breadth three eighths of an 

 inch. Inhabits stagnant waterSo 



