Geoloyical Society, ST).'] 



quite as far. Caudal subtruncate. Caudal peduncle 3 times 

 as lotig as deep. Uniform brownish. 



'J'en specimens, 75-125 mm. in total length. 



Closely allied to E. davidi, Sauvaj^e, from which it is 

 distinguished especially by the wider mouth and tlie more 

 slender caudal peduncle. I am indebted to Dr. Pellegrin 

 for one of the types of E. davidi. This is in bad condition, 

 but is evidently of the same species as the better-preserved 

 specimens in the collection of the British Museum (Natural 

 History)^ from the mountain streams running into the Miu 

 lliver^ Sze Chuen Province, China. 



PROCEEDINGS OF LEAKNED SOCIETIES. 



GEOLOGICAL SOCIETY. 



January 24th, 1923.— Prof. A. C. Seward, Sc.D., F.R.S., 

 President, in the Chair. 



The following communication was read : — 



On Peptilian Eemains from the Karroo Beds of East Africa.' 

 By Sidney Henry Haughton, B.A., D.Sc, F.G.S. 



Three specimens of a small fossil were found by Mr. F. P. 

 Mennell, F.G.S., in black shale in the middle of the Karroo 

 Formation, near Tanga, on the coast of Tanganyika Territory. 

 Two are well preserved, and are now described in detail. They 

 represent a new genus and species of aquatic reptile, in general 

 appearance much like Mesosaurus, but differing in its shorter 

 neck, thinner ribs, relatively larger and more massive fore-limb, 

 the presence of a large rounded sternum, and of only four distal 

 carpal and tarsal bones instead of five. It is perhaps more closely 

 related to Youngina, and may be regarded as an aquatic adapta- 

 tion of that type. If so, the shale at Tanga is approximatel}^ of 

 the same a2:e as the Middle Beaufort Beds of South Africa. 



February IGth, 1923.— Prof. A. C. Seward, Sc.D., F.R.S., 

 President, in the Chair. 



The President delivered his Anniversary Address : — • 



The Earlier Records of Plant-Life constituted tlic subject 

 of the Presidential Address. Attention was drawu to the danger 

 of excessive absorption in descriptive work, leading to insutticient 



