PLATE XXXIV. 



Pecten (coiifi)i)ird). 



Fios. 



] — (). p. {CJihiimjs) Maiifrllifonis, d'Orb. Upper Chalk {B. vutcronafa zone), 

 Norwich. Norwich Museum (except fig. 3). (P. 179.) 



1. No. 2093. a, left valve; b, part near mid-ventral edge X 6. 



2. No. 2058. Left valve. 



3. Woodwardian Museum. Right valve, a, natural size ; b, middle part x 2 ; 



c, portion near the centre x 5. 



4. No. 2055. Right valve. Part near the umbo x 2. 



5. No. 2055 (another specimen). Right valve. 



6. No. 2053. Left valve x 2. 



7—12. P. (Ghlaviys) EohlyinlJiini,^ d'Orb. Ferna-hed. Atherfield. Wood- 

 wardian Museum. (P. 181.) 



7. Leckenby Collection, a, left valve; b, part near the margin just in front of the 



mid-ventral part x 4. 



8. Leckenby Collection, a, left valve ; b, part of the middle of the valve between 



the two strong growth-lines x 3. 



9. Leckenby Collection, a, left valve ; b, part near the mid-ventral edge x 3. 



10. a, right valve ; b, part near the antero- ventral margin x 4. 



11. Left valve ; middle of ventral third X 4. 



12. Wiltshire Collection, a, left valve ; b, part near the mid-ventral margin x 4 ; 



r, anterior ear x 3. 



