134 Geological Society. 



to the Hydromedusae. A satisfactory classification of the Antho- 

 and Loptomcdussc is not, it is insisted, at present possible. 



The section on the Anthozoa has been written by Mr. G. C. 

 Bourne ; and certainly no one else is better qualified for this task. 

 His account of the Otenophora is interestinj;. The supposed 

 Planari'in aflinities of Ctenoplana and Coeloplana Mr. Baurne views 

 with disfavour. Again, ilr. Bourne joins issue with Dr. Willey 

 conrerning the claim of the Ctenoplana and Ccieloplana to be regarded 

 as primitive forms. We have no evidence, Mr. Bourne contends, to 

 show whether they are primitive or derived forms. 



The illustrations are numerous and well executed. A large number 

 are original. Some of these are drawn by the authors themselves. 

 Those by Prof. Minchin and Mr. Bourne are especially good. 

 Many of those illustrating the external forms of sponges are by 

 Mr. P. J. Bazand, and are really excellent. 



PROCEEDINGS OF LEARNED SOCIETIES. 

 GEOLOGICAL SOCIETY. 



Febniarj- 21st, 1900.— J. J. H. Teall, Esq., M.A., F.R.S., 



President, in the Chair. 



The following communication was read : — 



* Further Evidence of the Skeleton of Eurycarpus OwenV 

 By Prof. H. G. Seeley, F.R.S., F.L.S., V.P.G.S. 



The original specimen from which this species was named was 

 obtained from the Sneewberg (South Africa) in 1876, and after being 

 doubtiully referred to Dicynodon was described and figured in 1889. 

 It was presented to the British Museum by Mr. Thomas Bain, through 

 Sir Henry Barkly. The skull was found with the complete spe- 

 cimen, and a short memorandum of its characters, with a sketch of 

 the skeleton, including the skull, was made by Mr. T. Bain and has 

 been preserved in the British Museum. Half of the counterpart of 

 the slab was presented to the Author by the Rev. C. Murray, and 

 bv means of it complete casts of part of the skeleton have been 

 obtained. 



From Mr. Bain's sketch the Author is able to give some account 

 of the skull, including its dimensions. From the material men- 

 tioned above, he gives new facts with regard to the vertebral 

 column, the ribs, the shoulder-girdle, the fore-limb, the hind-limb, 

 and the armour, which was present upon the limbs and the fore 

 part of the body. 



The locality from which the animal was obtained had already 



