﻿496 ACTINOPTERTGII. 



1877. Ehmichthys striolatus, R. H. Traquair, ibid. p. 553, and Ganoid 



Fishes Brit. Carb. Form. (Pal. Soc), p. 57, pi. vii. figs. 4-15. 

 18S0. Elonichthys tenuiserratus, R. H. Traquair, Proc. Roy. Phys. 



Soc. Edinb. vol. v. p. 119. [Imperfect fish ; Mus. Comp. Zool., 



Cambridge, Mass.] 

 1880. Elonichthys dunsii, R. H. Traquair, ibid. p. 126. [Imperfect 



fish ; Free Church College Museum, Edinburgh.] 

 1890. Elonichthys nemopterus, R. H. Traquair, Proc. Roy. Soc. Edinb. 



vol. xvii. pp. 390, 394 (admits varieties striolatus, intermedins, 



dunsii, tenuiserratus, and affinis). 



Type. Imperfect fish ; Edinburgh Museum. 



A very variable species, of moderate size. Maximum depth of 

 trunk more than twice that of the caudal pedicle, and equalling 

 nearly one quarter of the total length. Head with opercular appa- 

 ratus contained about four and a balf times in the total length ; 

 cranial roof-bones tuberculated, facial bones striated. Fin-rays 

 robust, with close articulations in the adult, finely marked with 

 longitudinal striae ; fulcra minute. Scales of flank scarcely deeper 

 than broad ; posterior margin finely serrated. Scale-ornament 

 consisting of very delicate, irregular, oblique striae, passing behind 

 into reticulations or punctations. 



Form, fy Loc. Calciferous Sandstones : Midlothian and Fifeshire. 

 Carboniferous Limestone : Midlothian \ 



P. 3428. Well-preserved specimen, 0*145 in length, displaying the 

 dorsal, anal, and parts of the other fins ; Calciferous Sand- 

 stone, Burdiehouse, near Edinburgh. Enniskillen Coll. 



20685. Equally large specimen, much crushed and distorted, show- 

 ing parts of the paired, anal, and caudal fins ; Burdie- 

 house. - Purchased, 1847. 



P. 999. Three young individuals, one imperfect anteriorly ; Burdie- 

 house. Eyerton Coll. 



P. 2827, P. 3432. Three young individuals, somewhat imperfect ; 

 Burdiehouse. Enniskillen Coll. 



P. 3429. Portions of three small individuals ; Burdiehouse. 



Enniskillen Coll. 



1 Under the name of Palcsoniscus striolatus, Ag., an uncertain species from 

 the Coal-Measures of Lobejiin, Province of Saxony, is also described by E. F. 

 Germar, Verstein. Steinkohlengeb. Wettin (1849), p. 79. pi. xxix. fig. 12. Another 

 fossil, similarly described as having been obtained from Belgium (L. G. de 

 Koninck, Anim. Foss. Terr. Carb. Belg. 1844, p. 610, pi. liv. figs. 1, 2), is pro- 

 bably a German specimen of Palcsoniscus macropomus (E-. H. Traquair, in L. G. 

 de Koninck's Faune Calc. Carb. Belg. pt, i. p. 13). 



