PLATE XXXIII. 



Cardit'm (rontinueil). 



Figs. 



] — 3. G. {(iranncardiiiiii) prolniscidcuiii, Sow. Upper Greciisaiul, Blacktlowii. 

 Sedgwick Museum, Cambridge. (P. 205.) 



1 a, right valve; h, anterior view of the same. 



"2 a, interior of left valve; h, dorsal view of the same. 



3. Hin<:;e of rii;lit valve. 



ClfiiKS — T(>i'('.\si.\, Mii)iii-r-Cliiih)ias. 



4 — G. T. Lniisihdri (Sow.). Lower Greensand, Stock Orchard, near Calne. 

 Internal cast.'!. (P. 207.) 



4. Both valves. Museum of Practical Geology, No. 22720. 



5. Lower valve. Museum of Practical Geology, No. 22721. x f. 



6. Upper valve. P>ritish Museum, No. 8882.5. 



(Ji')ius — Gvi!ori,Ei;u.\, JJuiicille. 



7. (r. cornucopia' (d'Orl).). Cliloritic Marl, Melbnry Park. i\rii.seum of 

 Practical Geology, No. 22iin. n, right valve; /*, posterior view of 

 Imtli valves. (P. 208.) 



8 — 13. (t. ineqiiirostratd (Woodw.). Upper Chalk (zone of Ihiemnitclla mncro- 

 natii), Xorwieh. 8—10, British Museum, Xo. 21002. 11—13, 

 Norwich Museum. (P. 20'.).) 



8a, right valve; b, posterior view of liolh valves; c, ornamentation of right 



valve X 8. 

 (I, left valve and uinlio of I'ighl valve ; /*, posterior view of lioth valves. 



10. Ornamentation of right valve near the ventral margin x 12. 



11. Eight valve. Internal cast. 



12. Anterior view of holh valves. Internal cast. 



13 (J, left valve and umbo of right valve; h, posterior view of lioth valves 

 Internal cast. 



