PROCEEDINGS 
OF 
THE GEOLOGICAL SOCIETY OF LONDON. 
Vou. III. Parr II. 1841. No. 76. 
Feb. 24.—The Honourable Charles Ashburnham, of Eaton Place; 
John Pringle Nichol, LL.D., F.R.S.E., Professor of Astronomy in 
the University of Glasgow; William Ick, Esq., Curator of the Phi- 
losophical Institution, Birmingham; and James Butler Williams,. 
Esq., Professor of ‘Topography and Hydraulics in the College for 
Civil Engineers, were elected Fellows of this Society. 
M. A. H. Dumont, Professor of Geology and Mineralogy in the 
University of Liege; M. Louis Agassiz, Professor of Natural History 
at Neuchatel; Professor Georg Gottlieb Pusch of Stuttgart; and 
M. G. P. Deshayes, author of ‘ Description des Coquilles Fossiles des 
Environs de Paris,’ were elected Foreign Members of this Society. 
A paper, entitled ‘‘ Description of parts of the Skeleton and Teeth 
of five species of the genus Labyrinthodon, from the new red sand- 
stone of Coton End and Cubbington Quarries; with remarks on the 
probable identity of the Cheirotherium with that genus of extinct 
Batrachians,”’ by Richard Owen, Esq., F.G.S., F.R.S. 
In a paper read on the 20th of January, Mr. Owen described the 
peculiarities in the structure of the teeth of the Labyrinthodon (see 
ante, p. 357); and having been favoured by Dr. Lloyd, since that 
paper was written, with thé)loan of all the reptilian remains obtained 
from the new red sandstone of Warwick and Leamington, deposited 
in the Museums of those towns, and having been liberally per- 
mitted by the Committees of the Institutions to examine the teeth 
by the microscopic test, he gives, in this paper, a minutely detailed 
description of the fragments submitted to his examination, and points - 
out their relative connexion to each other, and the laws by which 
he has been enabled to determine that they all belong to the genus 
Labyrinthodon, and confirmatory of the Batrachian nature of the - 
Wurtemberg fossil. 
The specimens which Mr. Owen has examined are referable to 
five species, to which he has applied the names,—1. Labyrinthodon 
salamandroides, 2. L. leptognathus, 3. L. pachygnathus, 4. L. ven- 
tricosus, and 5. L. scutulatus ; and he describes successively the cha- 
racters exhibited by the bonies assignable to the 2nd, 3rd and 5th 
species. 
Labyrinthodon leptognathus.—The remains which Mr. Owen con- 
siders as portions of this species, consist of fragments of the upper 
and lower jaws, two vertebr, anda sternum. They were found in 
the sandstone quarries at Coton End, near Warwick. 
The portions of the upper:jaw show that the maxillary or facial 
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