PLATH XXXV. 
Fras. 
l-4.  Lepidotus (2) pustulatus, A. S. Woodward; four scales, the two first 
showing the overlapped portion, nat. size. The type specimen.— 
Lone of Schloenbachia varians ; Folkestone, Kent. B. M. no. 
P. 6201. 
5. Gyrodus (2) eretaceus, Agassiz; part of vomerine dentition, oral view, 
nat. size, with (5) one large tooth and (56) one small tooth in side 
view, twice nat. size.— Turonian zone; Lewes. Bowerbank 
Collection (B. M. no. 39048). 
6. Ditto; part of splenial dentition, the teeth shown in side and (6 @) oral 
views, nat. size, with (66) one large tooth in side view, twice nat. 
size.—Zone of Terebratulina gracilis ; Warlingham, Surrey. G. H. 
Dibley Collection (B. M. no. P. 6852). 
Ditto ; part of vomerine dentition of young fish, oral view, nat. size.-— 
Turonian zone; Southeram, Lewes. Capron Collection (B. M. no. 
49804). 
“J 
8. Anterior prehensile tooth of a Pyenodont, side view, nat. size-—Chalk ; 
Lewes. B. M. no. P. 7460. 
9.  Macropoma mantelli, Agassiz ; head, right side view, nat. size-—Turonian 
zone; Lewes. Capron Collection (B. M. no. 49834). ag., angular ; 
cl., clavicle; d., dentary, its upper process abutting against the 
toothed splenial; op., operculum; po.', upper postorbital (the two 
lower postorbitals represented by fragments beneath) ; pil., post- 
temporal, overlapped by upper end of clavicle; qu., articular end 
of quadrate ; so., suborbital; x., ossified hinder end of meckelian 
cartilage. 
10. Ditto; head, left side view, and (10 a) upper view of cranium, nat. size.— 
Chalk; near Maidstone. Bowerbank Collection (B. M. no. 39070). 
br., fragment of branchial arch ; cov., coronoid ; eth., dermal plates 
on ethmoidal region; fr., frontal; mz., maxilla; pa., parietal; 
pfr., parafrontals ; other letters as in fig. 9. 
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