SCIENTIFIC SOCIETIES. 233 



tooth generally regarded as the successor to the fourth premolar was, in 

 reality, a distinct tooth, and that the molars in this family of Marsupials 

 belonged to the second dentition. 



Mr. W. T. Blanford read a description of two heads of a Stag from 

 Central Tibet, belonging to the Elaphine group, on which he proposed to 

 found a new species, Cervus thoroldi. These specimens had been obtained 

 by Dr. W. G. Thorold about 200 miles north-east of Lhasa, at an elevation 

 of 13,500 feet above the sea-level, during his late adventurous journey 

 through Tibet in company with Capt. Bauer. 



May 16.— Osbert Salvin, Esq., F.R.S., Vice-President, in the chair. 



Extracts were read from a letter undressed to Prof. Newton by Prof. 

 E. C. Stirling, of Adelaide, respecting the recent discovery of a large 

 series of remains of Diprotodon, Phascolomys, and other Mammals at Lake 

 Mulligan, in South Australia, about 600 miles north of Adelaide. It was 

 anticipated that when these remains were received and examined, very 

 important additions to our knowledge of the extinct Mammal-fauna of 

 Australia would follow. 



Mr. Beddard read a paper upon the structures termed " atrium " and 

 "prostate" in the Oligochsetous worms, in which reasons were given for 

 believing that all these structures were reducible to one common plan. 



Mr. G. B. Sowerby read the descriptions of fifteen new species of 

 shells of the family PleitrotomidcB from different localities. 



A communication was read from Mr. A. H. Everett, containing a revised 

 list of the Mammals inhabiting tho Bornean group of islands, that is, 

 Borneo and Palawan, which, as Mr. Everett had shown in a previous paper, 

 belongs zoologically to Borneo. 



Mr. O. Thomas read a paper containing an account of a second collection 

 of Mammals sent by Mr. H. H. Johnston from Nyasaland. The present 

 series (collected, like the former, by Mr. Alexander Whyte) consisted of 

 about seventy-five specimens, referable to thirty species, of which a large 

 proportion were additional to the Fauna of Nyasaland. 



Dr. P. Sonsino, of Pisa, read some notes on specimens of parasitic 

 worms of the genus Distomum, of which he had lately examined specimens. 

 — P. L. Sclater, Secretary. 



Entomological Society of London. 



May 10, 1893.— Henry John Elwes, Esq., F.L.S.,F.Z.S., President, 

 in the chair. 



Mr. A. Cowper Field, of 81, Wiltshire Road, Brixton, S.W., was 

 elected a Fellow of the Society. 



Mr. R. McLachlan exhibited, for Dr. Fritz Muller, of Blumenau, 

 Santa Catarina, Brazil, specimens of larvae and pupae of a dipterous insect, 



ZOOLOGIST. —JUNE, 1893. T 



