104 DK RAMSAY H. TRAQUAIR ON FOSSIL FISHES COLLECTED BY 



We may now proceed to the enumeration and, where necessary, the description of 

 the fishes and fish-remains which have occurred in these beds. 



Class PISCES. 

 Subclass Elasmobranchii. 



Order ACANTHODEI. 



Family Acanthodid^e. 

 Genus Acanthodes, Agassiz. 



Acauthodes, sp. indet. 



The collection submitted to me contains four fragmentary specimens referable to 

 this genus, but of which it is not possible to define the species with accuracy. The best 

 of these is a portion, l l\ inches in length, of the hinder extremity of a fish, showing the 

 dorsal and anal spines, but cut off just at the origin of the caudal fin. The minute 

 quadrate scales have mostly a small dimple in the centre of the outer surface. 



Though I hesitate to affix a specific name to these fragments, I rather suspect they 

 will turn out to belong to the same species as the fragment from Wardie named by 

 Agassiz A. sulcatus (Poiss. Foss., vol. ii., pt. 1, 1835, p. 125, pi. 1 c, figs. 1, 2). 



Subclass Teleostomi. 



Order CROSSOPTERYGII. 



Family Rhizodontid^e. 



Genus Rhizodus, Owen. 



Rhizodus Hibberti (Agassiz and Hibbert). 



1836. Meyaliclitltys Hibberti, Agassiz and Hibbert, Trans. Roy. Soc. Edinb., vol. xiii. p. 202, pi. viii. 



fig. 1 (non figs. 2 and 3), pi. ix. figs. 2, 3, 9, 10; woodcut on p. 183. 

 1841. Rhizodus Hibberti, Owen, Odojitoyrapliy, vol. i. p. 75, vol. ii. p. 12, pi. xxxv. fig. 2, pis. xxxvi., 



xxxvii. 

 1841. Ho/optyc/iius Hibberti, Agassiz, Poiss. Foss., vol. ii. pt. ii. p. 180 (name only). 

 1855. Rhizodus Hibberti, M'Coy, Brit. Palseoz. Foss., p. 612. 



,, Rhizodus gracilis, M'Coy, ibid., p. 611, pi. iii. G, fig. 17. 

 1877. Rhizodus Hibberti, R. H. Traquair, Proc. Roy. Soc. Edinb., vol. ix. p. 658. 

 1891. ,, „ A. S. Woodward, Cat. Foss. Fishes Brit. Mus., pt. ii. p. 342. 



1899. Megalichthys Hibberti, O. P. Hay, American Natttralist, vol. xxxiii., 1899, p. 787. 



Two scales, one of which measures 3 inches in diameter, have been found by Mr 

 Macconochie in bed a, and one large tooth 1\ inches in length, deficient at the point, 

 by Mr W. T. Gordon in bed b. 



