90 PROCEEDINGS OP THE GEOLOGICAL SOCIETY. 



Pinally it was concluded that the evidence brought forward was 

 sufficient to render necessary the abolition of the name Pliosauridae, 

 and the inclusion of Flesiosaurus and Pliosaurus in a single family. 



Discussion. 



The Peesident welcomed the reunion of the various Plesiosaurus- 

 like forms under one genus. 



Mr. HiTLKE considered that Mr. Lydekker had established his case. 

 He regretted that old genera should be split up on account of minute 

 differences, and congratulated the Author upon the abolition of the 

 minor divisions. 



Dr. ScoiT agreed with Mr. Hulke on the desirability of not 

 splitting up forms prematurely. He commented upon the range of 

 variation of forms whilst still keeping to the generic type. There 

 was a difficulty in correlating the faunas of N. America and Europe 

 in Mesozoic and later times. 



The Atjthoe thanked the Society for their reception of his paper. 



3. "On the Eozoic and Palaeozoic Eocks of the Atlantic coast of 

 Canada in comparison with those of Western Europe and the Inte- 

 rior of America." By Sir J. W. Dawson, LL.D., E.E.S., E.G.S. 



4. " On a Hornblende-biotite Rock from Dusky Sound, New Zea- 

 land." By Captain E. W. Hutton, E.G.S. 



The following specimens were exhibited : — 



Eock-specimens and microscopic sections, exhibited by F. H. 

 Hatch, Ph.D., E.G.S., in illustration of his paper. 

 si IjVertebrsB of Flesiosaurus pliilarclius and P. raegadirus belonging 

 to the type specimens, exhibited by Prof. T. M'Kenny Hughes, 

 E.G.S., and portions of skeleton of P. philarchus, exhibited by E. 

 Lydekker, Esq., E.Gr.S., in illustration of his paper. 



June 6, 1888. 



W. T. Blanfoed, LL.D., E.E.S., President, in the Chair. 



Edmund Dickson, Esq., 30 Eastbourne Eoad West, Berkdale, 

 Southport, was elected a Eellow, and M. Charles Brongniart, Paris, 

 a Foreign Correspondent of the Society. 



The List of Donations to the Library was read. 



The following names of Fellows of the Society were read out for 

 the first time, in conformity with the Bye-Laws Sect. YI b. Art. 6, 

 in consequence of the non-payment of the arrears of their contribu- 

 tions:— Eev. T. C. B. Chamberlin ; Eev. G. Clements; W. M.Cole, 



