﻿vol. 64.] brachyrhyxchcs feom the oxeoed clat. 357 



Discussion. 



Dr. Henry Woodwaed complimented the Author upon the 

 clearness and excellence of his description of Metriorhynchus 

 hrachyrhynchus, and referred to the excellent work performed by 

 his father, Mr. Alfred jN". Leeds, F.G.S., and his uncle also, in dis- 

 covering and preserving the reptilian remains from the Oxford 

 Clay of Peterborough. Having had the advantage of his father's 

 training, the Author ought to surpass him in his future scientific 

 work, by reason of his increased opportunities. 



Dr. A. Smith Woodwaed directed attention to a skull of Metrio- 

 rhynchus which had been obtained by Dr. F. Ameghino from a 

 Jurassic formation in jSTeuquen (Patagonia). As in the Oxford Clay 

 at Peterborough, this Teleosaurian was associated with the ganoid 

 fish, Rypsocormus, of which the speaker also exhibited specimens 

 received from Dr. Ameghino. 



Dr. C. W. Andeews congratulated the Author on having taken up 

 the description of some of the magnificent material in his father's 

 collection. He referred to the great interest of the account of the 

 structure of the nasal passage and internal nasal opening ; a 

 description which was only possible with specimens in which the 

 difierent elements could be taken apart and their relations to one 

 another examined — a condition that was fulfilled in the case of 

 many of the reptilian skulls collected by Mr. A. N. Leeds from the 

 Oxford Clay of Peterborough. 



The President thought it a matter for congratulation when an 

 Author so ably maintained the family-tradition. In a work so full 

 of careful detail it was difficult to single out particular points, but 

 the observations on the posterior nares were especially interesting. 

 That a closely -allied form both of this reptile and its companion-fish 

 occurred in South America afforded a welcome confirmation of the 

 zonal correlation founded on the invertebrata. 



The Author briefly expressed his thanks for the reception 

 accorded to his paper. 



