396 WELLHURN : FOSSIL FISH FOUND IN THE MILLSTONE GRITS. 
Again, in the present year, Mr. Thomas Saltenstall, of 
Sowerby, sent me a fin-spine that I am unable to distinguish 
from Acanthodes Wardi Egerton. He found it in some dark shale 
also, at the base of the Third Grit, at Boulder Clough, Sowerby. 
And quite recently I found in the collection of the late 
Mr. James Spencer, of Halifax, a slab showing Acanthodian 
remains, which had been found in the shale at the base of the 
Third Grit at Kilnhouse Wood, Luddenden Dean, Luddenden. 
From the above it will be seen that up to the present time 
all the fish-remains have been found at one horizon, viz., in dark 
shales near the base of the Third Grit, and as far as I know this 
is the only horizon at which they have been found in the whole 
of our Millstone Grit series. 
Remarks on the Fish-Remains Found. 
Sub-class : Elasmobranchii. 
Order I. : Ichthyotomi. 
Family : Cladodontidse. 
Genus : Cladodus Agassiz. 
Sp. Cladodus sp. ? 
Teeth : Loc, Wads worth Moor. 
Order II. : Acanthodi. 
Family : Acanthodidfie. 
Genus : Acanthodes Agassiz. 
1. Sp. Acarithodes Wardi Egerton. 
Fin-spine having the following characters :— Scythe-shaped, 
much laterally compressed, with a faint groove and ridge parallel 
with the anterior border, and disappearing distally ; distals flat- 
tened. 
2. Aca7ithodes [Wardi Egerton?). 
Fragment of fish, showing the body from immediately in 
front of the " Branchial arches " to about three-quarters of an inch 
behind the dorsal fin. 
The body is much flattened and covered with patches of small 
quadrate granular scales, which are sracoth and faintly hollowed 
mesially. 
