PLATE XII. X 
Fig. Pngi' 
1. JTyhodus hamnus, Egerton ; head, loft lateral aspect, ono 
half nat. size. — Wcaldcii ; Povensey Bay, Sussex, md. 
Left ramus of mandible, ptq. Left pterygo-quadrato. 
I P. 2082.] 274 
2. Ditto ; portion of inferior as[)ect of head, one half nat. size. 
— Ibid, hhy, Basihyal. chy. Ceratohyal. md. Inferior 
margin of mandible. [P. 2082 a. J 274 
B. Ditto ; branchial arches of left side, inferior aspect, ono 
half nat. size. — Ibid. hr.'-hr.^ Series of branchial 
arches. | P. 2082.] 274 
4, a, h. Ditto ; four upper and four lower teeth, anterior aspect, 
restored from various s])ecimens, the larger examples 
b(!ing the more anterior. 273 
.*5. Ditto ; imperfect dorsal fin-spine, lateral aspect. — Wealden ; 
Hastings. [P. 2833.J 275 
0. SynecliodiisdidAsknsis vertebra;. — Chalk; Kent. 
[49032.] 328 
7. Synecliodus, tooth, anterior aspect. — U. Chalk; Nor- 
' wich. [48954.] 330 
