PLATE XXII. 
Page, 
p’ig. 
1. 
Aviculopectcn illatvarensis, J, Morris — Internal cast, seen from tlie side of the 
smaller valve 
238 
Fig. 
la. 
The same, seen from the opposite side 
238 
Fig. 
o 
Aciculopecfen sulquiiiqueUneafits, F. McCoy — Internal cast, lateral view 
22.8 
Fig. 
3. 
AvicAtlopecfen profundus^ L. Gr. de Koninck — Internal cast, with some of the 
shell ... ... ... ... ... ... ' ... 
23G 
Fig. 
1. 
Aviculopectcn limceformis, J. Morris — Internal cast, lateral view 
229 
Fig. 
0. 
Aviculopectcn elonqatus. F. McCoy — Lateral view of specimen... 
231 
Fig. 
G. 
Aviculopectcn consimilis, F. McCoy — Lateral view of specimen 
230 
Fig. 
Ga. 
The same, enlarged... 
230 
Fig. 
7. 
Aviculopecten depilis, F. McCoy — Lateral view of specimen 
230 
Fig. 
8. 
Aviculopectcn cingendits, F. McCoy — Lateral view of specimen 
233 
Fig, 
9. 
Aviculopecten llardiji, L. Gr. dc Koninck — Lateral view of specimen ... 
232 
Fig. 
10. 
Aviculopecten granosus, J. de C. Sowcrhy — Lateral view of specimen ... 
231 
Fig. 
11. 
Aviculopecten tessellntus, J. Phillips — Lateral view of specimen 
235 
Fig. 
12. 
Avicula intumescens, L. G. dc Koninck — Lateral view of specimen 
211. 
Fig. 
13. 
A.vicula dccipiens, L. G. de Koninck — Lateral view of specimen 
211 
iMg. 
11. 
Conularia inornata, J. D. Lana — Specimen, viewed from the broad side 
218 
Fig. 
11a. 
The same, viewed from the narrow side ... 
218 
Fig. 
11^/. 
Transverse section of the same 
218 
