﻿494 ACTINOPTEKIGII. 



Elonichthys (?) gigas (Fritsch). 



1877. Amblypterus gigas, A. Fritsch, Sitzungsb. k. bohru. Gesell. Wiss. 

 p. 51. 



Type. Imperfect fish ; Royal Bohemian Museum. 



A species of very large size, attaining a length of not less than 

 1*3. Maximum depth of trunk somewhat exceeding the length of 

 the head with opercular apparatus, contained about four times in 

 the total length. Scales of flank scarcely deeper than broad, all 

 ornamented with numerous fine oblique striae. 



This species may pertain to Acrolepis, but the results of the 

 detailed researches of Fritsch. must be awaited before it can be 

 generically determined. 



For in. Sf Loc. Lower Permian : Bohemia. 



P. 5855. Plaster cast of type specimen, the original in fragments, 

 to be described with figures in a forthcoming part of 

 Fritsch's ' Fauna der Gaskohle ' ; Zilov. 



Purchased, 1887. 



Elonichthys egertoni (Egerton). 



1844. Palceoniscus egertoni, L. Agassiz, Poiss. Foss. vol. ii. pt. i. p. 302 



(name only). 

 1850. Palceoniscus egertoni, Sir P. Egerton, Quart. Journ. Geol. Soc. 



vol. vi. p. 5, pi. i. fig. 2. 

 1852. Palceoniscus egertoni, Sir P. Egerton, Figs. & Descrips. Brit. 



Organic Remains (Mem. Geol. Surv.), dec. vi. no. 2, pi. ii. 

 1870. Palceoniscus egertoni, Hancock & Atthey, Xat. Hist. Trans. 



Nortkumb. & Durham, vol. iii. p. 96. 

 1877. Elonichthys egertoni, R. H. Traquair, Quart. Journ. Geol. Soc. 



vol. xxxiii. p. 553, and Ganoid Fishes Brit. Carb. Form. (Pal. Soc), 



pi. ii. fig. 8. 

 1890. Elonichthys egertoni, J. Ward, Trans. N. Staffs. Inst. Mining 



Engin. vol. x. p. 171, pi. iv. figs. 1, 2. 



Type. Imperfect fish ; British Museum. 



A comparatively slender, small species, attaining a length of 

 about 0-12. Maximum depth nearly equal to the length of the 

 head with opercular apparatus, which occupies about one-fifth of the 

 total length; external bones tuberculated. Fin-rays coarsely 

 ribbed longitudinally, with few delicate oblique stria?. Scales of 

 moderate size, relatively thin, with well-developed internal rib; 

 principal flank-scales somewhat deeper than broad. Scale-ornament 



