LIST OF CONTENTS. 



1909, pp. 545-952. 



May 11, 1909. 



Page 

 Mr. R. H._ Burne, M. A., F.Z.S. Exhibition of specimens of 

 adaptive structures for the respiration of air in some 

 Aquatic Invertebrates and Tropical Freshwater Fishes . 545 



Mr. R. I. Pocock, F.L.S., F.Z.S. Exhibition and description 

 of the skin of an undescribed local race of Monkey, 

 CercO'piihecus tantalus alexandri 545 



Mr W. F. H. Rosenberg, F.Z.S. Exhibition of a Rook 



with an abnormal bill 546 



1. Contributions to the Study of the Equidfe,* — I. The 



Differentiation of the Three Species of Zebras, By 

 Prof. William Ridgeway, M.A., Sc.D., F.B.A., LL.D., 

 Litt.D 547 



2. Contributions to the Study of the Equid^e. — II. On 



Hitherto Unrecorded Specimens of Equus quagga. By 

 Prof. William Ridgeway, M.A., Sc.D., F.B.A., LL.D., 

 Litt.D 563 



3. Contributions to the Study of the Equidfe. — III. On 



a Portion of a Fossil Jaw of one of the Equidee. By 

 Prof. William Ridgeway, M.A., Sc.D., F.B.A., LL.D., 

 Litt.D 586 



4. On a Kew Race of Deer from Sze-chuen. By R. Lydekker. 



(Plate LXIX.) 588 



5. The Batrachians and Reptiles of Matabeleland. By 



E. C. Chubb, F.Z.S 590 



* See also p. 798. 



a2 



