﻿PLATE Y1I. 

 Fig. Page 



1. Coccosteus decipiens, Ag. ; cranial shield, dorsal aspect. — 

 Lower Old Eed Sandstone; Tynet Burn. c. Central. 

 e. Ethmoid, l.occ. Lateral occipital, m. Marginal. 

 m. occ. Median occipital, orb. Orbit, p. Pineal. 

 jp.o. Preorbital. pt.o. Postorbital. sclJ Sclerotic. 



[44586.] 289 



Ditto ; abdominal region,lateral aspect. — Ibid. 6 1 , b 2 . Double 

 series of basal cartilages of dorsal fin. d. Median dorsal 

 plate. /. Eoramina or pittings in pelvic basipteiygium. 

 h. Haemal arches and spines. l.l. Calcification of late- 

 ral line. n. Neural arches and spines, not. Vacant 

 space occupied by notochord. p.v.l. Posterior ventro- 

 lateral plate, plv. Pelvic basipterygium. r. Cartila- 

 ginous rays of pelvic fin. x. Thin vertical calcified 

 plate at hinder end of abdominal region. [43617.] 



288 



