Amphibian from the Coal-shale of Newsham. 57 
skull, differing from any thing with which we are acquainted, 
and of such a peculiar character that it is necessary to esta- 
blish a new genus for the reception of this curious species, 
which we propose to name Batrachiderpeton lineatum. One 
of the specimens is in a good state of preservation, and is 
almost entire. The anterior portion of it, however, is crushed 
and otherwise injured; but the characters of the hinder part 
are well displayed, and so are those of the median coronal 
bones, the surface-structure of the whole being beautifully 
preserved. The other specimen has lost a considerable por- 
tion of the right side, and is much crushed and distorted, but 
nevertheless exhibits, in excellent order, some of the more 
important characters. 
lateral expansions of the occipital region, which are very 
