Fias. 
PLATE XXXIV. 
PECTEN (continued). 
1—6. P. (Chlamys) Mantellianus, VOrb. Upper Chalk (6. mucronata zone), 
Norwich. Norwich Museum (except fig. 3). (P. 179.) 
Doe 
No. 2093. a, left valve; b, part near mid-ventral edge x 6. 
No. 2058. Left valve. 
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. 
No. 2055 (another specimen). Right valve. 
. No. 2053. Left valve x 2. 
7—12. P. (Chlamys) Robinaldinus, VOrb.  Perna-bed.  Atherfield. | Wood- 
wardian Museum. (P. 181.) 
y 
( 
8 
9 
10. 
1 
12 
. Leckenby Collection. a, left valve; 6, part near the margin just in front of the 
mid-ventral part x 4. 
. Leckenby Collection. a, left valve; b, part of the middle of the valve between 
the two strong growth-lines x 3. 
. Leckenby Collection. a, left valve; b, part near the mid-ventral edge x 3. 
a, right valve; b, part near the antero-ventral margin x 4. 
. Left valve; middle of ventral third » 4. 
. Wiltshire Collection. a, left valve; 6, part near the mid-ventral margin x 4; 
> 
c, anterior ear x 3. 
