XIV DESCRIPTION OF THE PLATES. 
Fig. 7 & 7*. Defensive spine of Placoid fish, probably of the Ray-tribe ¢ 
8. Teeth of Cestracion canaliculatus, twice the natural size. 
9 & 9*. Portion of jaw and teeth of the Hypsodon minor. 
10, 10* & 10**. Saurocephalus lanciformis. 
Tas. XXXIII. 
Figs. 1 & 1*. Portions of the scales, with jaws and teeth of Gyrodus angustus. 
2. A fragment of the dental plate of Plethodus expansus. 
3. Series of the teeth of Pycnodus parallelus. 
4. Osmeroides Lewesiensis. 
4a. A scale, magnified, of Osmeroides Lewesiensis. 
Tas. XXXIV. 
Fig. 1. The head of Beryx ornatus. 
2. The head of Macropoma Mantelli. 
3. Beryx microcephalus. 
4, 4a, 46. Jaws of a Beryx. 
4c. The hypotympanic bone of a Beryx. 
5. Dercetis elongatus. 
6 & 7. Lower maxillary bone of Edaphodon Mantelli. 
8. Premaxillary bone, right side, of Ischyodus gigas. 
9, 10, 10a. Portions of jaws and teeth of Pachyrhizodus basalis. 
11. Portion of wpper jaw of the Saurocephalus lanciformis. 
Tas. XXXV. 
Fig. 1. Portion of head of Tomognathus mordax. 
2. Homonotus dorsalis. 
3 & 3*. Portion of jaw and teeth of Belonostomus cinctus. 
4 & 4, Portion of jaw and teeth of Belonostomus attenuatus. 
5 & 5*. Portion of jaw and teeth of Saurocephalus striatus. 
6 & 7. Pomognathus eupterygius. 
8. Portion of Berycopsis elegans. 
8*. One of its scales, magnified. 
Tas. XXXVI. 
Figs. 1 & 8. Beryx ornatus. Fig. 4. Beryx radians. 
2. Stenostomus pulchellus. 5. superbus. 
