- 4!^ 6 - 



alt., 7 mm.; cTiaa., 2.5 nun.: The shell is heav;- ror itc cize 



ancl the hinge has the charactc '..yen in the diag-nocic of the 



Occurrence.- Lo~cr I!io:?ene : 'o.vden beds, "^owden, Jamaica 



f'Jall, 1^"'.'"\ 



