Papers {continued). 



rajrr. 



20. On the Pairing of Pseudoscorpiones. By II. Wallis Kew, F.Z.S. (Text-figs. 47-o0. ) 37''> 



21. A Contribution towards tlie Knowledge of the Spiders and other Arachnids of 

 Switzerland. By the Eev. O. Pickard-Cambuidge, M.A., F.R.S., C.M.Z.S. 

 (Text-figs. 51 &52.) ^V, 



22. On the Blood-parasites found in Animals in the Zoological Gardens during the four 

 years 1908-1911. By H. G. Plimmer, F.R.S., F.Z.S., Pres.E.M.S., Pathologist to 



the Society. (Pis. XLIX.-LV.) 400 



2;j. On the Structure of the Internal Ear and the Relations of the Basicranial Nerves in 

 Dicynodon, and on the Homology of the Mammalian Auditory Ossicles. By R. Broo.m, 

 M.D., D.Sc, C.M.Z.S. (PI. LVI. and Text-fig. 5.3.) 419 



24. Zoological Results of the Third Tanganyika Expedition, conducted by Dr. AV. 



A. CuNNiNGTON, 1904-1905. Report on some larval and young stages of Prawns from 

 Laike Tanganyika. By Prof. G. O. Saes, C.M.Z.S. (Pis. LVII.-LX.) 420 



25. Tlie Classification, Morphology, and Evolution of the Echinoidea Holectypoida. By 



Herbert L. Hawkins, M.Sc, F.G.S. ; Lecturer in Geology, University College, 

 Reading. (Text.figs. 54-60.) 440 



Titlopage i 



List of Council and Officers . ii 



List of Contents iii 



Alphabetical List of Contributors ix 



New Generic Terms xti 



Index of Scientific Names xvii 



Index of Illustrations xxis 



