(Contents {contimied). 



June 15, 1909. 



Page 

 Mr. H. W. Unthank, F.Z.S. Exhibition of, and remarks upon, a skull of Sphenodon with 



abnormal nasal region 666 



The Secretary. Exhibition of the ears of an Elephant from the Guaso Ngishu Plateau, east 



of Mt. Elgon, British Ea.st Africa : 667 



Mr. J. 0. White, C.I.E., C.M.Z.S. Exhibition of photographs of a young living specimen 



of tlie Takin (Budorcas) 668 



Mr. E. Lydekker. Exhibition of photographs of a spotted bull Tsaine or Bantin from Siam . . 668 



Mr. Oldfield Thomas, F.R.S., F.Z.S. Exhibition and description of a new Rat (Oiotylomys 



guatcmalcB) from Guatemala 'n&d 



Dr. F. Wood Jones, F.Z.S. On a theory of Atoll formation 671 



Dr. R. Broom, C.M.Z.S. Exhibition of an unborn foetus of Chrysochloris koitentota, and two 



j-oiing specimens of C. asiatica , 679 



Dr. R. Broom, C.M.Z.S. Exhibition of the skulls of two S. African fossil reptiles — 



Lycosuchtcs vanderrieti and Bauria cynops 679 



1. On the Organ of Jacobson in Oryderopus. By R. Broom, D.Sc, C.M.Z.S. (Plate LXXI.) 680 



2. On some Points in the Structure of the Lesser Anteater {Tamandua tetradactyla), 



with Notes on the Cerebral Arteries oi Myrmeco-phaga and on the Postcaval of Oryderopus. 

 By Frank E. Beddard, M.A., F.R.S., F.Z.S., Prosector to the Society 683 



3. On Decapod Crustacea from Christmas Island, collected by Dr. 0. W. Andrews, F.R.S., 



F.Z.S. By W. T. Calman, D.Sc, F.Z.S. (Plate LXXII.) ... 703 



4. An Abnormal Individual of the Echinoid Amblypneustes. By H. L. Hawkins, B.Sc, 



Mark Stirrup Scholar in the University of Manchester 714 



5. The Decapods of the Genus Gennadas collected by H.M.S. 'Challenger.' By Stanley 



Kemp, B.A. (Plates LXXIII.-LXXV.) 718 



6. Notes on a Young Walrus {Odobcenus rosmarus) recently living in the Society's Gardens. 



By P. Chalmers Mitchell, M.A., D.Sc, Hon. LL.D., F.R.S., Secretary to the Society. 

 (Plate LXXVI.) 730 



7. Notes on the Viscera of a Walrus {Odobcenus rosimirus). By R. H. Burne, M.A., F.Z.S. 732 



