societies' proceedings. 33 



1891. — j. h. A. Jenner. — "Notes on the L. and F. Mollusca of 

 East Sussex." Journ. Conch, p. 361. Enumerates 15 sp. and 

 34 vars. 



1891. — T. D. A. Qockerell]. — Bandless H. nemoralis from Lewes. 

 Brit. Nat., p. 65. Describes 5 forms sent by Mr. C. H. Morris. 



SOCIETIES' PROCEEDINGS. 



ZOOLOGICAL SOCIETY, LONDON. 



April 5.— W. T. Blandford, F.R.S., in the chair. 



An account of the Land-Shells of St. Helena, by Mr. Edgar A. 

 Smith, was read. Mr. R. J. L. Guppy exhibited specimens of 

 Bulimus oblongus. Descriptions of 7 new species of Land-Shells 

 from the U.S. of Columbia were read, by Mr. G. B. Sowerby. 



May 17.— Prof. W. H. Flower, C.B., LL.D., F.R.S., in the chair. 



The Rev. A. H. Cooke, M.A., F.L.S., F.Z.S., read a paper 

 " On the Geographical Distribution of the Land Mollusca of the 

 Philippine Islands,"' which showed that the distribution of the 

 different subgenera of Cochlostyla affords an interesting clue to 

 the early relations of the various islands of the Philippine group. 

 Regarded from this point of view, the central islands, Samar, Leyti, 

 Bohol, Negros, and Panay with Luzon, were closely related, while 

 Mindoro and Mindanao were remarkably isolated even from their 

 nearest neighbours. An examination of the intervening seas 

 accounted for these phenomena, the depths between the central 

 islands being inconsiderable, while Mindoro and Mindanao are 

 surrounded by very deep water. The Mollusca of the two ridges 

 between the Philippines and Borneo, formed by Busuanga, Palawan, 

 and Bulaboc, and by the Sulu Archipelago, were partly Philippine, 

 partly Indo-Malay. Two remarkable groups of Helix, peculiar to 

 Mindoro, Busuanga, and Palawan, showed relations with Celebes, 

 and possibly with New Guinea. The Mollusca of the Batan, Tular, 

 and Talantse Isles were also discussed. Regarded as a whole, the 

 Land Mollusca of the Philippines were stated to contain : — 



1. Indo-Malay. 2. Polynesian. 3. Indegenous elements, the 

 first decidedly predominating. 



LINNEAN SOCIETY. 



April 7. — Prof. Stewart in the chair. 



Specimens of Testacella maitgei, Fer, from Devonshire, were 

 exhibited by Mr. W. S. D' Urban. 



