70 



T. SOLIDULA. Lam. 51. Mont. p. 63. Pen. 4. p, 

 184. t. 62. f. 2. and 2A. Lin. T. 8. p. 58, Dor. 

 Cat. p. 31. t. S.f. 4:. Turt. C. D' p. 177,DaCos. 

 t. 12. /. 4. List. t. 405. /. 251. PSAMMOBIA S. 

 Turt. B. t. S.f. 2. p. 95. .F. p. 438. T. ZONATA. 

 Gmel. 3250. D. p. 100. Rounded-triangular, thick, 

 ventricose, somewhat angulated and compressed ante- 

 riorly, passing from white into yellow or pink, with 

 darker bands and obsolete ridges of growth ; hinge 

 nearly central, with two indistinct cardinal teeth in each 

 valve, no lateral. t...i. Excessively common on 

 sandy shores. 



* * * Suborbicular with two cardinal teeth in each 

 valve. 



T. MACULATA. Turt. C. D. p. 173. t. 13. Turt. 

 B.p.WS. t. 6. /. 7. F. p. 436. Rounded -oval, 

 equivalve, flat, thin, whitish brown covered with darker 

 spots irregularly disposed, and marked wtth numerous 

 raised striae, crossed in their interstices by minute longi- 

 tudinal ones ; inside yellowish white, glossy, two strong 

 remote lateral teeth in each valve. !,..!. Dredged 

 in Bantry Bay. 



T. CRASSA. Pen. 4. t. 48. /. ZS.Gmel. 3238. 



