494 
ACTIXOPIERIGII. 
Elonichthys (?) gigas (Fritsch). 
1877. Amblypterus gigas, A. Fritsch, Sitzungsb. k. bokrn. 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. 
Ihis species may pertain to Acrolepis , but the results of the 
detailed researches of Fritsch must be awaited before it can be 
generically determined. 
Form. 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. 
Eloniclifhys 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, Nat. Hist. Trans. 
Northumb. & Durham, vol. iii. p. 96. 
1877. Elonichthys egertoni, R. II. Traquair, Quart. Journ. Geol. Soc. 
vol. xxxiii. p. 553, and Ganoid Fishes Brit. Garb. Form. (Pal Soc ) 
pi. ii. fig. 8. ’ 
1890. Elonichthys egertoni, J. Ward, Trails. 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 
totai length ; external bones tuberculated. Fm-rays coarsely 
ribbed longitudinally, with few delicate oblique strise. Scales of 
moderate size, relatively thin, with well-developed internal rib; 
principal flank-scales somewhat deeper than broad. Scale-ornament 
