Class VI. BULLA. DIPPER. 257 



Gm. Lin. 3424. 106. t. 6. /. 1. g. hydatis. 



Lin. Tr. viii. 123. ib. ix. Mont. Test. Br. 217. 



* B. with a pellucid orbicular shell, faintly 

 striated lengthways ; umbilicated at the end ; 

 diameter one inch ; inhabits the sea. 

 Western coast. 



Gm. Lin. 3434. Mont. Test. Br. 2 ig. 10. akera. 



Lin. Tr. viii. 125. 



* B. with a pellucid ovate shell; end abrupt, 

 caniculated; size of an hazel nut; inhabits 

 the sea. 



Scotland, Dorsetshire, Portsmouth. 



Lin. Tr. viii. 126. Voluta Jonensis. Br. Zool. 4to. 11. diapha- 



Mont. Test. Br. 225. *. 7- iv- 101.* tab. lxxi. Jig. 87- NA - 



/.8. 



* B. with a very thin brittle shell, with two 

 small spires ; length three eighths of an inch ; 

 breadth two eighths of an inch; inhabits the 

 sea. Tab. lxxiv. Jig. 2. 

 Devonshire. 



VOL. IV 



