﻿PALJEONISCIDiE. 431 



acuminate, nearly opposite, the former arising only slightly in 

 advance of the latter ; caudal fin deeply cleft, inequilobate. Scales 

 sculptured, somewhat deeper than broad on the anterior portion of 

 the Hank ; a prominent series of dorsal ridge-scales. 



Except in the characters of the head, there is much superficial 

 resemblance between this genus and lihaclinichthys. 



Canobius ramsayi, Traquair. 



1881. Canobius ramsayi, R. H. Traquair, Trans. Roy. Soc. Edinb. 

 vol. xxx. p. 47, pi. v. figs. 1-4. 



Type. Eish ; Geological Survey of Scotland. 



The type species, attaining a maximum length of about # 08. 

 Maximum depth of trunk contained about three times in the 

 total length. Head and opercular apparatus occupying little more 

 than one-fifth of the total length ; snout very obtusely rounded ; 

 external bones ornamented with coarse flattened corrugations, 

 except the mandible, which is marked by finer and nearly parallel 

 longitudinal ridges. Pelvic fins relatively small, arising somewhat 

 nearer to the anal than to the pectorals ; dorsal and anal fins 

 similar, almost completely opposed ; caudal fin very heterocercal, 

 the upper lobe being about twice as long as the lower, and nearly 

 equalling one-third of the entire length of the fish. Scales com- 

 paratively smooth, rarely or never denticulated, but marked with 

 few faint diagonal ridges and furrows, sometimes also with delicate 

 vertical striae close to and parallel with the anterior margin of the 

 exposed area. 



Form, fy Loc. Calciferous Sandstones (Cement-stone Group): 

 Eskdale, Dumfriesshire. 



P. 4068. Three typical specimens, one being in counterpart. 



Purchased, 1883. 



P. 5981. Trunk with median fins, in counterpart. 



Purchased, 1889. 



Canobius elegantuhis, Traquair. 



1881. Canobius elegantulus, R. H. Traquair, Trans. Roy. Soc. Edinb. 

 vol. xxx. p. 49, pi. v. figs. 5-8. 



Type. Eish ; Geological Survey of Scotland. 



General form and proportions as in the type species. Head and 

 opercular bones ornamented with sharp, tortuous, and often 



