PLATE VIII. 



Fig. Page. 



1 . Le])idotiis mantelli, Agassiz ; hinder portion of head, with anterior scales 



and base of pectoral fin, one-half nat. size. — Wealden ; Heathfield, 

 Sussex. The type specimen. Mantell Collection (B. M. no. 245G). 

 d., clavicle; co7\, coracoid; /(m.,hyoniandibular; iop., interoperculum; 

 wpf., metapterygoid ; oj)., operculum ; j)cl., postclavicular scale ; pet., 

 pectoral fin; pop., preoperculum ; scL, supraclavicle ; sop., sub- 

 operculum. 37. 



2. Ditto; vertically crushed head in right side view and upper view (2a), 



with a lower view of the dentary bones (2 h), one-half nat. size. — 

 Wealden ; Highfure, Billingshurst, Sussex. The type specimen of 

 the so-called Lepidotns fittoni, Agassiz. B. M. no. 20673 n. co., 

 circumorbitals ; fr., frontal; md., mandible ; ]>a., parietal ; po., post- 

 orbitals; jj^f., post-temporal; sq., squamosal; st., supratemporals ; 

 other letters as in fig. 1. 37. 



3. Ditto ; hinder margin of skull and anterior dorsal scales, upper view, 



one-half nat. size. — Wealden; Sussex. Mantell Collection (B. M. 

 no. 2401). Lettering as in fig. 2. 44. 



4. Ditto ; flank scales, partially decayed, showing coarse oblique grooving, 



nat. size. — Wealden; Horsham, Sussex. B. M. no. P. 5129. 46. 



