PLATE XV. 



Fig. Page. 



1. Dercetis latiscutatus, sp. nov.; remains of middle portion of trunk, the 



type specimen, left lateral and partly superior aspect, with one 

 of the dorso-lateral scutes enlarged twice (1 a). — Probably zone of 

 Terebratulina gracilis; Glynde, Sussex. Willett Collection no. 117, 

 Brighton Museum, d., d'., dorso-lateral scutes ; /., rays of dorsal fin ; 

 /., scutes of lateral line; v., ventro-lateral scutes. 65. 



2. Dercetis maximus, sp. nov. ; remains of head and anterior abdominal 



region, left lateral aspect, with detached vertebra? (2a), scutes (21), 

 and a fragment of the middle of the same fish (2 c), the type 

 specimen. — Zone of Micraster coranguinum; Grays, Essex. B. M. 

 nos. 31075-82. el., clavicle; <]., dentary in fig. 2, dorso-lateral 

 scutes (inner aspect) in fig. 2 b ; fr., supraorbital part of frontal 

 (inner aspect) ; /., scutes of lateral line (inner aspect) ; rn/pt, meta- 

 pterygoid; pas., parasphenoid ; pit., pelvic fin-support; an., quad- 

 rate ; v., ventro-lateral scutes (inner aspect) ; rb., vertebras showing- 

 neural arches. GO. 



3. Enchelurus anglicus, A. S. Woodward ; scattered remains of vertebral 



column and dorsal fin (do.). — Zone of Holaster subglobosas ; Glynde, 

 Sussex. Capron Collection (B. M. no. 49812). 76. 



All the figures, except 1 a, of the natural size. 



