rAX.£ONISClDiE. 
499 
Elonichthys serratus 5 Traquair. 
1881. Elonichthys sciratus , E. H. Traquair, Trans. Boy. See. Edinb. 
vol. xxx. p. 22, pi. i. figs. 5-8. 
Type. Imperfect fish ; Geological Survey of Scotland. 
A small species, attaining a length of about 0*1. Cranial roof- 
bones in part granulated; other head-bones and pectoral arch 
irregularly striated. Pins relatively small, the ra}s sparsely striated 
longitudinally. Scales small, those of the flank somewhat deeper 
than broad ; all exhibiting a very coarsely serrated posterior margin. 
Ornament of principal scales consisting of very delicate, irregular, 
oblique striae anteriorly, with large, parallel, oblique ridges pos¬ 
teriorly, these terminating in the hinder serrations. 
Form, Loc. Calciferous Sandstone (Cement-stone Group): Esk- 
dale, Dumfriesshire. 
P. 4062. Imperfect small individual, in counterpart, wanting the 
pelvic, dorsal, and caudal fins. Purchased , 1883. 
Elonichthys (?) portlceki (Egerton). 
1850. Amblypterus portlocki, Sir P. Egerton, Quart. Journ. Geol. Soc. 
vol. vi. p. 2. 
1877. Elonichthys portlockii, E. H. Traquair, Quart. Journ. Geol. Soc. 
vol. xxxiii. p. 553. 
Type. Detached scales, &c.; British Museum (in part). 
A species known only from scales and other fragments. Ein- 
ravs longitudinally striated; fulcra prominent. Elank-scales 
scarcely deeper than broad, ornamented with fine oblique strise, 
straight, subparallel, rarely intercalated, and passing behind into 
serrations of the posterior margin. 
Form. § Log. Lower Carboniferous : Derry and Fermanagh, Ire¬ 
land. 
P. 3460. Two groups of scales, one with imperfect pectoral and 
anal fins ; Maghera. The anal fin-rays are distinctly 
striated. Enniskillen Coll. 
The following species have also been determined, but there are 
no examples in the Collection:— 
Elonichthys hinneyi, B. H. Traquair, Geol. Mag. [3] vol. v. (1888), 7 L /n^ r F 
/j, p. 251.—Lower Coal-Measures (Dalemoor-Bake Iron- 
^ stone); Stanton-by-Dale, Derbyshire^/ [Imperfect fish ; 
E. W. Binney Collection.] 
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