Class VI. SHELLS. B 7 



T. with a very thick depreffed oblong (hell; white ; Depreffh. 



. 2.J. Depres- 



with concentric ftria. sed. 



Tab. xlvii. fig. 27. 



T. with very thick, broad, and deprefTed (hells, Crafa. 

 marked with numerous concentric ftria. Breadth, 

 an inch and three quarters 5 length, an inch and a 

 quarter. 



Has the habit^ of the Venus borealis ; but the 

 fides of this are unequal, one being more extended 

 than the other. 



Tab. xlviii. fig. 28. 



Lin. Syft. 1 1 17. No. 52. Planata. 



29. Plain, 



T. with a very flat delicate (hell, marked with 

 concentric lines of red y the fpace about the hinge 

 brown. Breadth, two-thirds of an inch. 

 Tab, xlviii. fig. 29. 



Lin. Syft. 1 1 17. JVi.. 54. Radiata. 



30. Rayed, 



T. with very convex (hells of a faint am color, 

 radiated with red ; tinged within with a faint pur- 

 ple. Breadth an inch and an half. 



Tab. xlix. fig. 30. 



G 4. £?«. 



