PAPERS. 



Page 



15. The Life-History and Habits of two Parasites of Blow- 



flies. By A. M. Altson. Witli an Introduction by 

 Prof. H. Maxwell Lefroy, F.Z.S. (Text-figures 

 1-20.) 195 



16. A Revision of the Nematode Family Gnathostomidae. 



By H. A. Baylis, M.A. Oxon., Assistant in the 

 Department of Zoology, British Museum (Natural 

 History), and Clayton Lane, M.D.Lond., Lt.-Col. 

 I.M.S. (ret.). (Text-figures 1-40; Plates L-VIII.).. 245 



17. Contributions to a Study of the Dragon-fly Fauna of 



Borneo. — Part lY. A List of Species known to 

 occur in the Island. By F, F. Laidlaw, M.A. 

 (Cantab.), F.Z.S. (Text-figures 1-4.) 311 



18. On some new Tlierocephalian Reptiles from the Karroo 



Beds of South Africa. By R. Broom, M.D., D.Sc, 

 F.R.S., O.M.Z.S. (Text-figures 1-9.) 343 



19. Ohalicotheroidea from Baluchistan. By C. Forster- 



CooPER, M.A., F.Z.S., Superintendent of the 

 University Museum of Zoology, Cambridge. (Plate 

 I. and Text-figures 1-7.) 357 



20. Fauna of Western Australia. — III. Further Contri- 



butions to the Study of the Onychophora. The 

 Anatomy and Systematic Position of West Australian 

 Per ipato ides, with an account of certain histological 

 details of general importance in the study of Peri- 

 patus. By Wm. J. Dakin, D.Sc, F.Z.S., F.L.S., 

 Professor of Biology. University of Western Australia. 

 (Plates L-Y.) 367 



21. Notes on Marine Wood- boring Animals. — I. The Ship- 



worms (Teredinidae). By W. T. Calman, D.Sc. 

 (Text-figures 1-11.) 391 



22. Report on Entozoa collected from Animals which died 



in the Zoological Gardens of London during eight 

 months of 1919-20. By G. M. Yevers, M.R.C.S., 

 L.R.C.P., F.Z.S., Beit Memorial Research Fellow, 

 Demonstrator in Helminthology at London School of 

 Tropical Medicine, and Hon. Parasitologist to the 

 Zoological Society of London 405 



