CONTENTS. 



VOLUME IV. 



Pakt 1, ISSUED May, 1919. 



PAOE 



Ou the Anatomy of a New South African Hydroid, 

 Bimeria rit^ada sp. n. By Ernest Waeren, 

 D.Sc.(Lond.). (With Plates I and II, and 2 Text- 

 iigures) ...... 1 



The Wing- Venation and Eespiratory System of Certain 

 South African Termites. By Claude Fuller, 

 Division of Entomology, Department of Agriculture, 

 Pretoria. (With Plates III-XI) . . .19 



Observations on Cellular Degeneration and the Formation 

 of Pigment in certain Hydroids. By Ernest Warren, 

 D.Sc.(Lond.). (With Plate XII and 11 Text-figures) 103 



South African Bagworms ; a New Sub-genus and Species 

 of the G-enus Acanthopsyche, and a Re-descrip- 

 tion of Trichocossus arvensis Janse. By A.J. T. 

 Janse, F.E.S.L. (With 1 Text-figure) . .137 



South African Bagworms ; their Transformations, Life- 

 history and Economic Importance. Part II. By 

 C. B. Hardenberg, M.A., Entomologist in Charge 

 of Wattle Insect Investigations, Natal. (With Plate 

 XIII and 25 Text-figures) . . . .143 



Contributions to a Knowledge of the Terrestrial Isopoda 

 of Natal. Part II. By Walter E. Collinge, 

 D.Sc, F.L.S., etc., Carnegie Fellow, and Research 

 Fellow of the University of St. Andrews. (With 

 Plate XIV) . . . . . .229 



Z9G^3 



