PALjEONISCIDiE. 
489 
very minute. Scales relatively small; those of the flank somewhat 
deeper than broad ; none serrated. Scale-ornament consisting of 
oblique strise, simple, bifurcated, or intercalated, extending fiom the 
anterior and superior borders and passing postero-inferiorly into either 
irregular reticulations (on the principal flank-scales) or sparse pit tings 
(on the other scales). 
Form. Sf Loc. Coal-Measures: Staffordshire, Lancashire, and 
N orthumberland. 
P. 4468. Left dentary bone; Knowles Ironstone Shale, Fenton, 
North Staffordshire. Enniskillen Coll. 
P. 1002. Fragment of squamation; North Staffordshire. 
Egerton Coll. 
P. 3431. Two small groups of scales; Longton, North Staffordshire. 
Enniskillen Coll. 
P. 3413. Group of scales; Fenton. Enniskillen Coll. 
P. 1002 a. Imperfectly preserved flank-scales, probably of this 
species ; Longton. Egerton Cod. 
P. 5200. Pectoral fin and scales ; (?) North Staffordshire. 
Purchased , 1885. 
Elonichthys peltigerus, Newberry. 
1856. Elonichthys peltigerus, J. S. Newberry, Proc. Acad. Nat. Sci. 
Philad. vol. viii. p. 98. 
1866. Palceoniscus peltigerus, Newberry & Worthen, Pal. Illinois, vol. ii. 
p. 17, woodc. fig. 1. 
1873. Palceoniscus peltigerus , J. S. Newberry, Rep. Geol. Surv. Ohio, 
vol. i. pt. ii. p. 345, pi. xxxviii. fig. 1. 
1877. Elonichthys (P) peltigerus, R. H. Traquair, Ganoid Fishes Brit. 
Carb. Form. (Pal. Soc.), p. 49. 
Type. Imperfectly preserved fish ; Columbia College, New Lork. 
A species of moderate or small size. Head with opercular 
apparatus occupying about one quarter of the total length ; 
external bones finely and irregularly striated. Fin-rays longitudin¬ 
ally striated. Scales of moderate size, ornamented with fine, 
oblique striae, more or less irregular, branching, and intercalated, 
and terminating at the hinder border in delicate serrations. 
Form. 4' Log. Coal-Measures: Ohio and Illinois. 
P. 1004. Imperfectly preserved fish, wanting the greater portion 
