16 
found in something like their proper relative position. This 
fine specimen has been sent for description to Professor 
Huxley, and a notice of it will appear in the next volume of 
the Geological Society's Journal. Judging from the similar 
remains in the British Museum and in the Museum of 
Practical Geology, the species is as yet unknown. It is 
nearly allied to Pholidogaster, but will probably be dis- 
tinguished from the only species of that genus. While 
waiting for a full and authoritative account, I have thought 
that this interesting fossil from the Yorkshire coalfield merits 
a notice in the memoirs of this Society. I shall be glad if 
the few remarks I can at present ofier may stimulate our 
local palaeontologists to search more diligently than hitherto 
among the osseous remains which they have hitherto 
assigned to megalichthys, or other sauroid fishes. I am 
fully persuaded that the bones of labyrinthodonts are in this 
neighbourhood, at all events, more common than any others, 
and it may fairly be expected that many points at present 
obscure will be elucidated whenever the general atmosphere 
of .puzzle which prevails respecting the identification of 
carboniferous amphibia shall be fairly dispelled. 
The specimen which I have to describe is somewhat irregu- 
lar in the disposition of the various parts. As in liassic 
saurians, and other vertebrate remains, a certain amount of 
displacement has occurred. The cranium, with its beautifully 
sculptured ganoid plates, is apparently nearly perfect. The 
upper jaw exhibits an external row of eighteen teeth, the 
internal row, which doubtless studded the palatine aspect of 
the vomer, being unseen. The lower jaw is divided into 
halves, which together contain twenty-four teeth. The cora- 
coids, as in archegosaurus, are represented by two flat rhom- 
boidal plates. This is the only relic of either thoracic or 
pelvic limbs, but it is conclusive as to their existence. The 
under surface of the body has been evidently defended by 
