Class VI. TURBO. WREATH-SHELL. $08 



Lin. Tr. viii. l6g. 460. vign. I. f. 78. id. Sup. 30. crista- 



H. cristata. Mont. Test. Br. ]47. "^^S- 



* T. shell planish above, umbilicated beneath, 

 with three or four round volutions; minute; 

 inhabits fresh water. ' 



In the river Avon in fVilt shire, and near 

 Sandzvich. . 



Lin. Tr. viil. 170. Mont. Test. Br. 43,g. t. \3. 31. depres- 



* T. with a depressed shell, umbilicated beneath, 

 four volutions, aperture orbicular ; minute j in- 

 habits the sea. 



Found only by Mr. Montagu in Cormvall 

 and Devonshire. 



Cm. Lin. 3592. Mont. Test. Br. Sup. 137. 32. calcar. 



t. 29. /. 3. 



* T. with an unbilicated depressed shell, of a 

 pale pink color, four volutions, the first fur- 

 nished with about thirteen large erect processes; 

 diameter one quarter of an inch. 

 Taken by Mr, Laskey in Jona. 



