Stanley Hirst, F.Z.S. 



On some new or little-known Species of Acaii. 



CUAS. F. SONNTAO, M.D., F.Z.S. 



On the Pelvic Muscles and Generative Organs of the Male 

 Chimpanzee. 



The following Papers have been received : — 



Cyril Crossland, M.A., D.Sc, O.N., F.Z .S. 



Polj'^chajta of Tropical East Africa, the lied Sea, and Cape 

 Veixle Islands ; and of the Maldive Archipelago. 



Malcolm A. Smith, M.R.C.S., L.R.C.P., F.Z.S . 



New Tree-Frogs from Indo-Ohina and the Malay Peninsnla. 



Arthur LovKRipqE, F.E.S., C.M.Z.S . 



(1) Notes on East African Birds (chiefly Nesting-habits and 

 Endo-parasites), collected 1920-1923. 



(2) Notes on East African Snakes, collected 1918-1923. 



(3) Notes on East African Tortoise.s, collected 1921-1923, 

 with Description of a new Species of soft Land-tortoiso. 



(4) Notes on East African Lizards collected 1920-1923, 

 with Descriptions of Two new llaces of Jgaira lionotus Blgr. 



(5) Notes on East African Insects collected 1915-1922. 



R. R. Mole. C.M.Z.S. 



The Trinidad Snakes. 

 Mary L. Hett, F.Z.S. 



On the Family Linguatulida). 



Dr. Francis, Baron NorscA. 



Reversible and irreversible Evolution; a Study based on 

 Reptiles. 



J. R. Garrood, M.D. 



Two Skeletons of the Cetacean PsPAulorca crassidens from 

 Thorney Fen, Cambridgeshire. 



E. W. Shann, B.Sc, F.Z.S. 



Investigations on the Comparative Myology of Fishes. 



