PLATE XVIII. 



Fig. Page 



1. Neorhombolepis valdensis, A. S. Woodward; imperfect fish coiled up in 



ironstone, nat. size. — Wealden ; Hastings. The type specimen. 

 Beckles Collection (B. M. no. P. 6364). 88. 



2, 3. Ditto ; portions of head, pectoral arch, pectoral fin, and anterior scales 



of opposite side of same specimen, nat. size. 88. 



4. Ditto ; remains of dentary bone of same specimen, nat. size. 88. 



hr., branchiostegal rays ; c, remains of caudal fin ; cl., clavicle ; co., circum- 

 orbital ; d., base of dorsal fin; km , hyomandibular; md., hinder end of mandible; 

 mx., portion of maxilla; n.a., neural arches of vertebrsa ; pa., parietal; pas., para- 

 sphenoid ; pel., postclavicular plates ; pet., pectoral fin ; po., portion of postorbital ; 

 ptf., postfrontal (sphenotic) ; qu., quadrate; sch, supraclavicle ; sq., squamosal; 

 sij., symplectic ; v., vertebral centrum ; x., interoperculum (?) 



