PAPERS. 



Page 



1. The Comparative Anatomy of the Tongues of the 



Mammalia. — II. Family 1. Simiidre. By Charles 

 F. Sonntag, M.D., Ch.B., F.Z.S. (Anatomist to the 

 Society). (Text-figures 1-9.) 1 



2. Note on the Capture (in London) of a rare Parasitic 



Fly, Hammomyia (ffylephila) unilineata Zett. By 

 Lt.-Col. S. Monckton Copeman, F.R.S., M.D., F.Z.S. 

 (Text-figure 1.) 31 



3. The Bases of Classification of the Theriodontia. By 



D. M. S. Watson, F.Z.S. (Text-figures 1-29.) 35 



4. Experiments on Colour-Changes of the Spotted Sala- 



mander {Salamandra maculosa), conducted in the 

 Society's Gardens. By E. G. Boulenger, F.Z.S. 

 (Curator of Reptiles). (Plates I. & II.'; Text- 

 figure 1.) 99 



5. Contributions to the Morphology, Classification, and Zoo- 



geography of Indian Oligochseta. By J. Stephenson, 

 D.Sc, F.Z.S. (Lecturer in Zoology in the University 

 of Edinburgh). (Text-figure 1 .) 103 



6. On the Structure of the Reptilian Tarsus. By R. Broom, 



D.Sc, F.R.S., C.M.Z.S. (Text-figures 1-27.) 143 



7. A Contribution to the Anatomy of the Three-toed 



Sloth (Bradypus tridactylus). By Charles F. Sonntag, 

 M.D., Ch.B., F.Z.S. '(Anatomist to the Society). 

 (Plates I.-IY. ; Text-figures 10-15.) , 157 



8. Report on the Deaths which occurred in the Zoological 



Gardens during 1920. By N. S. Lucas, M.B., F.Z.S. 

 (Pathologist to the Society) 1 79 



9. On the Reproductive Organs of the Ascidian Kiiken- 



thalia borealis Gottschaldt. By Dr. Augusta Arnbaok- 

 Christie-Linde. (Text-figures 1-8.) 187 



