Class VI. HELIX. SNAIL. 331 



Lin. Tr. viii. 204. 32. TJNISPI- 



RALIS. 



* He. with a shell of one volution, umbilicated 

 on both sides ; aperture round 5 minute. 



Found near Sa?tdwich. 



• ■■r''. Lin. Tr. viii. 204. ' 33. STRIATA. 



* He. with a striated shell, aperture suboval, 

 volutions supradorsal ; minute. 



Y o\xu^ nediV Saridzvkh. 



Lin. Tr. viii. 204. Mont. Test. Br. Sup. 147, 34. COARC- 



TATA. 



* He. with a shell of two volutions ; aperture 

 roundish, contracted at the umbilicus ; minute. 

 Found near Sandivich. 



Lin. Tr. viii. 204. ih. iii. 67. t- 13. /. 35, 36. 35. tobu- 



LATA. 



* He. with a shell of three longitudinally stri- 

 ated volutions: this singular shell, instead of 

 an umbilicus, is perforated by a tube which 

 appears above the surface ; minute. 



