Exhibitions and Notices (continued). 



Page 



16. A List of tl)e Snakes of West Africa, from Mauritania to the French Congo. By Gr. A. 



BouLENGER, F.E.S., F.Z.S. (Text-figures 1 & 2.) 267 



17. A List of the Snakes of North Africa. By G. A. Boulengeb, F.R.S., F.Z.S 299 



18. A Description of New Species of Zeuglodont and of Leathery Turtle from the Eocene 



of Southern Nigeria. By C. W. Andrews, D.Sc, F.E.S. (British Museum, Natural 

 History.) (Plates I. & II. and Text-figures 1-3.) 309 



19. On the Occurrence of Denticles on the Snout of Xiphias glacUus. By J. Tiioenton 



Carter (Hon. Reseai'ch Assistant, Department of Zoology, University of London, 

 University College). (Plates I.-III.) 32l 



20. Crustacea from the Falkland Islands collected by Mr. Rupert Valleutin, F.Z.S, — 



Part IIL By the Rev. Thomas R. R. Stebbinq, M.A., F.R.S., F.L.S., F.Z.S. 

 (Plates I.-V. and Text-figures 1-8.) 327 



21. Field-Notes on some Mammals in the Bahr-el-Gebel, Southern Sudan. By Major J. 



Stevenson Hamilton, C.M.Z.S. (With Chart.) 341 



22. Descriptions of a new Snake from the Transvaal, together with a new Diagnosis and 



Key of the Genus Xenocalamus, and of some Batrachia from Madagascar. By The 

 Hon. Paul A. Methuen, M.A., F.Z.S. (Text-figure 1.) 349 



23. On the Variation in the Number of Dorsal Scale-rows in our British Snakes, By Miss 



Joan B. Procter, F.Z.S. (Text-figures 1-3.) 357 



24. On the Species of Balaninus occurring in Borneo (Coleoptera, Curculionidte). By 



Guy a. K. Marshall, D.Sc, F.Z.S. (Plates I, & 11.) 365 



25. On some new Fishes from near the West Coast of Lake Tanganyika, By G. A. 



Boulenger, F.R.S., F.Z.S. (Text- figures 6-10.) 399 



26. The Radula of the Mitridte. By the Rev. A. H. Cooke, Sc.D., F.Z.S. (Text- 



figures 1-18.) 405 



27. Note on the Righting Reaction in Asieriva gibhosa Penn. By E. S. Russell, M.A., 



B.Sc, F.Z.S 423 



28. Experiments on Sex Determination. By Lt.-Col, S. Monckton Copeman, M,D., F.R.S., 



F.L.S 433 



29. The Variations in the Digastric Muscle of the Rhesus Macaque and the Common 



Macaque. By Ciias. F. Sonntag, M.D., Ch.B., F.Z.S., Anatomist to the Society, 

 (Text-figures 1-5.) 437 



50. On the Nematode Parasites of a Chapman's Zebra. By Miss M. Turner, B.Sc. (Text- 



figures 1-6.) • 441 



51. The Development of the Mesenteries in the Actinian Vrticina crassicornis. By James 



F. Gemmill, M.A., M.D., D.Sc. (Text-figures 1-5.) 453 



32. The Ciliation of the Leptomedusan Melioeriidium octocostatum (Sars). By James F. 



Gemmill, M.A., M.D., D.Sc. (Text-figure 6.) 459 



Titlepage i 



List of Council and Officers ■ • ii 



List of Contents iii 



Alphabetical List of Contributors • • • vii 



Index .... XI 



