Amphibian from the Coal-shale of Newsham. 59 
of the occiput are very strong, and, together with the lateral 
ridges of the parietals, form along the sides of the central 
portion of the skull two nearly parallel lines enclosing the 
occipitals and parietals, each of which is rectangular in form, 
Other lines pass diagonally backwards in a radiating manner 
from the junction of the parietals and occipitals (that is, from 
the point where the transverse double line divides these two 
sets of bones), and are continued to the base of the outer horns ; 
there are three or four of such lines on each side. Also from 
the base of the outer horns other three or four somewhat in- 
terrupted lines stretch diagonally forwards and inwards, ex- 
tending nearly as far as the front of the parietals. At the 
posterior margin of the lateral expansions, and parallel to it, 
there are likewise two or three obscure lines. : 
Besides these lines, the occipital area and lateral expansions 
are irregularly tuberculated ; in front the skull is compara- 
tively smooth; but the whole surface, including the ridges 
and tubercles as well as the smooth portions, is covered with 
a minute reticulation of raised ridges; the meshes, being deeply 
sunk, give, when seen under a lens, a punctured appearance, 
and when so magnified this minute reticulation much resem- 
bles the usual Labyrinthodont honeycomb-like surface-struc- 
ture. 
The under surface of the specimen displays the roof of 
the mouth, which, though imperfect, exhibits some very in- 
teresting characters. In front the remains of the premaxille 
