PAPERS. 



Page 



1. The Comparative Anatomy of the Tongues of the 



Mammalia. — II. Family 1. Simiida?. 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 {Hyle'phila) imilineata Zett. By 

 Lt.-Col. S. Mo^-cKTON 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 {Scdamandra 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 Oligocliceta. 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 Contiibution 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. 10-1 5.) , 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) 179 



9. On the Reproductive Organs of the Ascidian Kuken- 



thalia horealis Gottschaldt. By Dr. Augusta Arnback- 

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



