PLATE III. 



Fig. Page. 



1. Hojjloj)terj/,e leiresieitsis (Mantell) ; left lateral aspect of fish. — Clialk ; 



neig-libourhood of Rocliester, Kent. B. M. no. 35712. ag., articnlo- 

 angiilar; rro., antorbital ; ?>r., lirancliiostegal rays ; r., caudal fin ; ch., 

 ceratohyal; r/., clavicle ; co. , circumorljitals ; ci, dentary ; r/o., dorsal 

 fin; *'^cj>/., ectopterygoid; hm., liyomandibular ; ////., hypohyal ; iop., 

 interoperculmn ; IL, lateral line; mx., maxilla; oj)., operculum; pet., 

 pectoral fin ; j;??;., j)elvic fin ; pnm., premaxilla; ])op., preoperculum ; 

 pff., post-temporal; qii., quadrate; smx. 1, 2, supramaxilla? ; socc, 

 supraoccipital crest. 16. 



2. Ditto ; cranium, from above, the hinder fossa filled with chalk. — Chalk ; 



probably from Burham, Kent. Mrs. Smith's Collection (B. M. no. 

 49037). eth., mesethmoid ; fr., frontal; r., ridge bounding posterior 

 fossa; ()., median slime-pit; i, ii, in, lateral slime-pits. 16. 



3. Ditto; right premaxilla, inner aspect. — Chalk; Burham. Toulmin Smith 



Collection (B. M. no. 41692). 17. 



4. Ditto ; anterior part of anal fin, showing four spines. — Chalk ; probably 



Sussex. B. M. no. 79. 20. 



All the figures of the natural size. 



