Vol. XVII.] 
Part II. 
PROCEEDINGS 
OF THE 
YORKSHIRE GEOLOGICAL SOCIETY. 
Edited by W. LOWER CARTER, M.A., F.G.S. 
1 9 1 O. 
ON FOIJR NEW CARBONIFEROUS NAUTILOIDS AND A GONIATITE 
NEW TO GREAT BRITAIN. 
BY WHEELTON HIND, M.D., B.S., F.R.C.S., F.G.S, 
(Plates III.— VII.) 
{Read March Uh, 1910.) 
INTRODUCTION. 
The specimens which form the subject matter of this paper 
have either been collected by or loaned to me for study and 
description. Some of them have been in my hands for years, 
during which I have compared them with figures and descriptions 
of most of the described Carboniferous species. I have also had 
the advantage of showing the specimens to Mr. G. C. Crick, of the 
Natural History Museum, and of conferring with him on their 
structure and affinities. During the last year I have been able 
to learn that my specimens were not unique, but that other 
examples of the same genera and species were extant in public and 
private collections, it therefore seemed to me that it was a fitting 
