Maj 26, 1903. 



Page 



1. List of the Batrachians and Reptiles collected by M. A. 



Robert at Chapada, Matto Grosso, and presented Ijy 

 Mrs. Percy Sladen to the British Museum. (Percy 

 Sladen Expedition to Central Brazil.) By G. A. 

 BouLENGER, F.R.S., Y.P.Z.S 69 



2. Note on some Mollusks of the Family BuUmtdidcfi from 



Matto Grosso. (Percy Sladen Expedition to Central 

 Brazil.) By Edgar A. Smith, I.S.O., F.Z.S 70 



3. The Present State of Knowledge of Colour-heredity in 



Mice and Rats. By W. Bateson, M.A., F.R.S., F.Z.S., 

 FelloAv of St. John's College, Cambridge 71 



4. On the Marine Fauna of Zanzibar and British East 



Africa, from Collections made by Cyril Crossland in 

 the Years 1901 and 1902.— Turbellaria Polyeladida. 

 Part I. The Acotylea. lay F. F. Laidlaw, B.A.Cantab., 

 Assistant Demonstrator and Lecturer in Biology in the 

 Owens College. (Plate IX.) 99 



June 16, 1903. 



The Secretary. Report on the Additions to the Society's 



Menagerie in May 1903 114 



Ml-. Frank Finn, F.Z.S. Exhibition of, and remarks upon, 



a living hen-feathered Bantam Cock 114 



Mr. G. A. Boulenger, F.R.S. Exhibition of, and remarks 

 upon, a specimen of the Frog Ceratohyla bubalus cairying 

 eggs on its back 115 



Mr. F. E. Beddard, F.R.S. Exhibition of a bust of the late 



President of the Society, Sir W. H. Flower, K.C.B. ... 116 



Mr. F. E. Beddard, F.R.S. Exhibition of, and remarks 



upon, sections of the ovary of the Thylacine 116 



Mr. R. E. Holding. Exhibition of some skulls and horns 

 of, and remarks upon the horn-growth in, tlie St. Kilda 

 four-horned Sheep \ Hg 



Dr. A. S. Woodward, F.R.S. Exhibition of photographs 

 illustrating the exhumation of a recently-discovered 

 Mammoth in Siberia U9 



