﻿484 ACTINOPTERYGII. 



1850- Pakeoniscus macrophthalmus, Sir P. Egerton, in King's Permian 



Foss. (Palaeont. Soc), p. 225, pi. xxii. fig. 2. 

 3855. Palceoniscus macrophthafoius, F. M'Coy, Brit. Palaeoz. Foss. 



p. 607. 

 1861. Palceo7iiscns macrophthah7ius, H. B. Geinitz, Dyas, p. 17, pi. vii. 



fig. 3. 



Type. Nearly complete fish ; Geological Society of London. 



A small species, attaining a maximum length of about 0*12 ; or 

 possibly a young stage merely of P. freieslebeni. Trunk robust, the 

 greatest depth contained about six times in the total length ; head 

 and opercular apparatus large, occupying somewhat less than one 

 fourth of the total length ; orbit relatively large. Fins as in P. 

 freieslebeni. Scales small and feebly ornamented. 



Form. <$f Loc. Upper Permian (Marl Slate) : Northumberland 

 and Durham. Upper Permian (Kupfers chief er) : Hesse. 



28613 d. Two large specimens, one showing the fins, the other coiled 

 up ; Marl Slate, Durham. Purchased, 1853. 



35736-37. Two small specimens, one wanting the head : Marl Slate, 

 Ferry Hill, Durham. Purchased, 1860. 



P. 1025. A large fish, chiefly in impression, labelled as a young 

 individual of P. comtus by Agassiz ; Ferry Hill. 



Ege7*ton Coll. 



P. 3484. Imperfect remains of large individual ; Marl Slate, Mid- 

 deridge, Durham. Ennishillen Coll. 



P. 354. Crushed specimen with relatively larger scales ; Marl Slate, 

 probably from Cullercoats, Northumberland. 



Purchased, 1881. 



P. 5139. Small individual, apparently elongated by pressure ; Cul- 

 lercoats. Presented by William Dinning, Esq., 1886. 



Small forms of Palceoniscus from the German Kupferschiefer, 

 apparently indeterminable immature individuals, are named Palceo- 

 niscus pygmceus (H. von Meyer, Neues Jahrb. 1848, p. 467, name 

 only). The following specimens are of this character : — 



P. 3476-7. Remains of head and trunk, about 0*055 in length, and 

 an imperfect trunk ; Biechelsdorf, Hesse. These specimens 

 were doubtless intended to be the types of P. pygmceus. 



Enniskillen Coll. 



P. 1016. Caudal region of equally small fish ; Eiechelsdorf. 



Egerton Coll. 



