28 
western Europe, but the new P. crassus from St. Peter’s seems to be rightly 
placed in this genus. It will be interesting to study the details of the cranial 
osteology of this fish when sufficiently satisfactory specimens of the head are 
met with. 
The occurrence of typical species of the Paheoniscid fish Elonichthys 
in the Permo-Carbouiferous of New South Wales was to be expected, because 
it had already been found in the Carboniferous of Victoria, audit is extremely 
characteristic of later Palaeozoic rocks both in Europe and North America. 
The two species from St. Peter’s, like most species hitherto named, are very 
imperfectly known, but their scale- ornament seems to be sufficiently peculiar 
to separate them from all species discovered elsewhere. The large fins, and . 
probably also the rounded shape of the trunk, cause nearly all the examples 
of Elonichthys to be much distorted. 
The new species of Myriolepis , which is the largest hitherto described, 
adds a few details to our knowledge of this genus, and seems to show that the 
small species from the Irish Coal Measures, which has been referred to it, is 
rightly placed here. 
Elpisopliolis is a remarkable discovery, but has been expected since the 
llawkesbury specimens of Belonorhynchus first demonstrated the close 
relationship of the Belonorhynchidse with the Palseoniscidse . 1 The new genus 
is, indeed a Palaeoniscid fish, but it differs from all the known members of its 
family in exhibiting a row of thick scutes along the course of the lateral line. 
In the latter feature and in the nature of its fin-rays, Elpisopliolis agrees 
with the Belonorhynchidm, and may doubtless be regarded as one of the 
predicted links between the two families in question. As the fish is almost 
destitute of scales, its internal skeleton is well displayed, and is proved to 
resemble in all essential respects the Palmoniscid skeleton, which was first 
satisfactorily seen in the specimens of Coccolepis from the Talbragar River .' 2 
The fragments of Platysomus and the supposed Acentrophorus from 
the indurated shale of St. Peter’s, are insufficient for discussion, but are 
interesting as contributing to make'the aspect of the new Permo-Carboniferous 
fish fauna completely familiar, notwithstanding its great distance in space 
from any corresponding fauna previously discovered. 
1 A. S. Woodward, “The Fossil Fishes of the Hawke9bury Beds at Gosford,” Mem. Geol. Surv. N. S. 
Wales, No. 4 (1890), p. 22. 
s A. S. Woodward, “ The Fossil Fishes of the Talbragar Beds (Jurassic ?),” Mem. Geol. Surv. N. S. Wales, 
No. 9 (1895), p. 5. 
