PLATE XXXVI. 



Pecten {continued). 



Tigs. 



1 — 4, p. (J^quijjecten) asper, Lam. Upper Greensand, Warminster, (P. 186.) 



1. Woodwardian Museum, a, left valve (the anterior ear is drawn from another 



specimen) ; b, ventral part x 3. 



2. York Museum. Eight valve. 



3. Woodwardian Museum. A form with few ribs. ? Right valve. 



4. Woodwardian Museum. Eight valve ; mid-ventral part x 3. 



F. {j3Squipecte7i) pexatus, Woods. (P. 190.) 



5. Upper Chalk, near Salisbury. Dr. Blackmore's Collection, a, x 2 ; 6, ventral 



part X 5. 



6. H. planus zone, Cheveley, near Newmarket. Woodwardian Museum, x 2. 



7. A. quadratus zone, East Harnham. Dr. Blackmore's Collection, a, outline, 



natural size ; b, part of same X 5. 



8. p. (yEquipecfen), sp. A. rpuKh-atu.s zone, East Harnlmm. Dr. Blackmore's 

 Collection, a, x 1^; h, part of same X 4. (P. 191.) 



