PLATE XLII. 



Velopecten (continued). 



Figs. 



1—4. V. Studeri (Pict, and Roux). (P. 218.) 



1. Gault, Folkestone. Wiltshire Collection, Woodwardian Museum. Left valve. 



2. Gault (Bed xi), Folkestone. Museum of Practical Geology, No. 1612. Left 



valve. 



3. Cambridge Greensand (derived). Internal cast in phosphate. Woodwardian 



Museum. Imperfect left valve. 



4. Red Limestone, Hunstanton. Woodwardian Museum, a, antero-ventral por- 



tion of left valve of a large specimen ; b, portion of the same X 4. 



5. V. trilinearis (Seel.). Cambridge Greensand (derived). Woodwardian 



Museum. The type. a, left valve ; b, part of the same near the 

 ventral margin X 3. (P. 219.) 



6. V. pectinatus (Seel.). Cambridge Greensand. Woodwardian Museum. 



The type, a, part of left valve ; b, portion of the same X 3. (P. 220.) 



7, 8. V. sp. Gault, Folkestone. Wiltshire Collection, Woodwardian Museum. 

 7, left valve. 8, portion of another left valve X 4. (P. 220.) 



9, 10. Pecten Nilssoni, Goldf. Upper Chalk. Mr. R. M. Brydone's Collection. 

 (Pp. 152, 226.) 



9. Trimingham. Portion of left valve. 

 10. A. quadratus zone, Hampshire. Right valve. 



1 1 . Pectunculus Vaughani, Woods. Greensand, Blackdown. Woodwardian 

 Museum (Coll. Mr. A. Vaughan). Left valve. (P. 224.) 



