PLATE XXXVI. 
PEcren (continued). 
Fias. 
1—4. P. (Aquipecten) asper, Lam. Upper Greensand, Warminster. (P. 186.) 
| 
. Woodwardian Museum. a, left valve (the anterior ear is drawn from another 
specimen) ; b, ventral part x 3. 
York Museum. Right valve. 
ho 
. Woodwardian Museum. <A form with few ribs. /? Right valve. 
. Woodwardian Museum. Right valve; mid-ventral part x 3. 
He OO 
5—7. P. (Aquipecten) pewatus, Woods. (P. 190.) 
Or 
. Upper Chalk, near Salisbury. Dr. Blackmore’s Collection. a, x 2; 6, ventral 
part x 5. 
. H. planus zone, Cheveley, near Newmarket. Woodwardian Museum. x 2. 
A. quadratus zone, East Harnham. Dr. Blackmore’s Collection. a, outline, 
natural size; b, part of same x 5. 
Im 
8. P. (Aquipecten), sp. A. quadratus zone, Kast Harnham. Dr. Blackmore’s 
Collection. a, x 14; b, part of same xX 4. (P. 191.) 
