340 HELIX SNAIL. Class VI. 



59. PALUS- Lin. Tr. viii. 216. t. 5. f. 8. H. stagnalis. B. Br. Zool. iv„ 

 TRIS. Mont. Test. Br. 373. t. 16. 13g. 



/. 10. id. Sup. 138. 



* He. with 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. lxxxix. 



60. fossa- Lin. Tr. viii. 217. t. 5. Mont. Test. Br. 372. t. l6. 



R1A ' /• 9- f- 9- 



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

 rounded volutions ; suture conspicuous ; aper- 

 ture ovate ; delicately pellucid ; it greatly re- 

 sembles the H. palnstris, but is not striated, 

 and is inferior in size ; length three eighths of 

 an inch, breadth one eighth. 



Found in ditches. 



6l; dltrita. Lin. Tr. viii. 217- Mont. Test. Br. 384. t. 11, 



/•I- 



* He. with a conic shell, white, with transverse 

 brown lines; aperture ovate; length three 

 quarters of an inch, breadth three eighths of an 

 inch. Inhabits stagnant waters. 



