PLATE XXXVII. 



Pecten {confinued). 



Fias. 



1 — 3. P. {j^quipeden) sarnmeiisis, Woods. A. quadratus zone, East Harnham, 

 Salisbury. Dr. Blackmore's Collection. Right valves. 1 a, X 4 ; 

 1 b, antero-ventral portion x 8. 2 a, x 4 ; 2 h, anterior part of a X 6. 

 3, X 4. (P. 192.) 



4 — 8. P. {jEquipeden) campaniensis, d'Orb. (P. 192.) 



4. Norwich Museum, No. 2044. B. mucronata zone, Norwich. Eight valve X 2. 



5. Dr. Blackmore's CoUectiou. Uintacrinus zone, Devizes Eoad, Salisbury. Eight 



valve X 4. 

 6, 7. Same CoUectiou. B. mucronata zone. Clarendon, near Salisbury. Eight valves. 

 6, X 4. 7, X 4. 

 8. Same Collection. A. qvadratus zone, East Harnham. Left valve x 4. 



9 — 11. P, (yEquijoeden) arlesiensis, Woods. Chalk Marl, Folkestone. 9, Wilt- 

 shire Collection, Woodwardian Museum. Right valve X 4. 10, 

 Museum of Practical Geology, No. 562. Left valve x 3. 11, Same 

 Museum, No. 562. Left valve; mid-ventral part x 6. (P. 194.) 



12 — 15. P. {^qulpeden) jnddieUus, Nilss. Upper Chalk, Trimingham. (P. 194.) 



12. Museum of Practical Geology, No. 8013 (collected by Mr. C. Eeid). a, right 

 valve X 3 ; 6, ventral part of the same X 6 ; c, part of dorsal third x 6. 

 13—15. Mr. E. M. Brydone's Collection. Left valves. 13, X 3. 14 a, natural size; 

 14 b, part near the antero-ventral margin x 5. 15, x 2. 



16. P. {Gamptonedes) curvatns, Gein. Chloritic Marl, Eastbourne. Wood- 

 wardian Museum. Right valve x 3. (P. 159.) 



