PAPERS {continued). 



Page 



42. On the Cestode Parasites from Mammalian Hosts which died in the Gardens of the 



Zoological Society of London during the years 1919-1921 ; with a description of a 

 new species of Ci/dorcMda. By Q-. M. Vbvers, M.R.O.S., L.R.C.P., F.Z.S. 

 (Text-figures 11 & 12.) 921 



43. On a further Collection of Mammals from the Inner Hebrides. By Ivor G. S. 



Montagu, F.Z.S. (Text-figure 1 .) , 929 



44. Two new Indian Species of the little-known Genus Aulodrilus Bretscher of the 



Aquatic Oligochreta belonging to the Family Tubificidfe. By H. R. Mehea, M.Sc. 

 (Plates I.-III. ; Text-figures 1-9.) 943 



45. A Contribution to the Anatomy of a Hammerhead Shark {Zygcsm malleus Shaw). 



By J. H. Lloyd, M.Sc, P.Z.S., and Edith M. Sheppard, B.Sc, F.Z.S. (Text- 

 figures 1-7.) , . 971 



46. On an Instance of Commensalism between a Hermit Crab and a Polyzoon. By 



R. KiRKPATRicK, F.Z.S., and Dr. J. Metzblaar. (Plates I. & II.) . . . . »^ 983 



47. New Species of Trinidad Moths. By W. J. Kayb, F.E.S. (Plate I.) 991 



48. The Nematode Genus P%5aJo/ii;emRud. By R. J. Ortlbpp, M.A. (Text-figures 1-44.) 999 



49. The OligocbEeta of the Oxford University Spitsbergen Expedition. By J. Stephenson, 



M.B., D.Sc. (Results of the Oxford University Expedition to Spitsbergen, No. 20.) 

 (Text-figures 1-6.) , 1109 



50. On the Anatomy of Scaplmla Benson, with a description of a new Species. By 



EKBJfDRANATH Ghosh, M.Sc, M.D., F.Z.S., F.R.M.S. (Text-figures 1-7.) 1139 



51. The Fcetal Membranes and Plaoentation of Chiromys madagascariensis. By Professor 



J. P. Hill, F.R.S., and R. H. Burns, M.A. (With an Appendix on the External 

 Characters of the Foetus, by R.I. PococK.F.R.S.) (Plates I.-VI. ; Text-figuies 1-6.) 1145 



52. On the External Characters of the Beaver (Castoridcs) and of some Squirrels 



(Sciuridcs). By R. I. Pocock, F.R.S., F.Z.S. (Text-figures 38-60.) 1171 



53. On the Morphology of the Chondrocranium of the Larval Herring {Clupea harengus). 



By F. R. Wells. (Text-figures 1-11.) 1213 



64. On the Colours of Water-Mites. By C. S. Elton 1231 



55. Notes on certain Crossopterygians. By Erik A ; son Stensio. (Plate I. ; Text- 

 figures 1-6.) 1241 



Alphabetical List of Contributors viii 



Index of Illustrations xv 



Index xix 



