CONTENTS. 



PAGE 



Descriptions of some South African Marine Shells. By 



Edgar A. Smith, I.S.O. (With Plate I) . .1 



A Case of Hybridism among Cockatoos. By Ernest 



Warren, D.Sc.(Lond.). (With Plate II) . .7 



On South African Enneae, with Descriptions of New- 

 Species and Varieties. By Henry Clifden Burnup. 

 (With Plates III, IV, V, and Text-figs.) . . 29 



On the Development of the Planula in a Certain Species of 

 Plumularian Hydroid. By Ernest Warren, D.Sc. 

 (Lond.). (With Plate VI and 4 Text-figs.) . 83 



Note on the Occurrence in South Africa of a Termito- 

 philous Beetle of the Genus Corotoca. By Ernest 

 Warren, D.Sc.Lond. ..... 103 



AULARD AND SON, IMPR., LONDON AND DOBKING. 



