PLATE VII. 
Pig- Page 
1. Coccosteus decipiens, Ag.; cranial shield, dorsal aspect.— 
Lower Old Red Sandstone; Tynet Burn. c. Central. 
e. Ethmoid, l.occ. Lateral occipital, m. Marginal. 
m. occ. Median occipital. orb. Orbit, p. Pineal. 
p.o. Preorbital, pt.o. Postorbital. scl. ? Sclerotic. 
[ 44586 .] 289 
2. Ditto ; abdominal region,lateral aspect.—Ibid. b\ b 2 . Double 
series of basal cartilages of dorsal fin. d. Median dorsal 
plate. /. Eoramina or pittings in pelvic basipterygium. 
h. Haemal arches and spines. Id. 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. oc. Thin vertical calcified 
plate at binder end of abdominal region. [ 43617 .] 288 
