1910.] THE ANATOMY AND BIOLOGY OF THE LARGER CETACEA. 709 



1 Tasmauian Wolf {Thylacinus cyiiocepJudns), from TaSiiiania, 

 purchased on April 18tli. 



2 Bearded Vultures (Gypaetus harhatus), from Europe, [)ur- 

 chased on April 9th. 



4 Mortier's Water-Hens [Trihonyx mortleri), from Tasmania, 

 purchased on Apiil 18th. 



Mr. Ernest Gibson, F.Z.S., exhibited a skin of Fells yeojfi'oyi 

 and made some remarks on the distribution of the animal. 



The following papers were read : — 



1. Observations on the Anatomy and General Biology ot" 

 some Members o£ the I^^arger C'etacea. By D. Gr. 

 LiLLiE, B.A., Hutchinson Research Student of vSt. John's 

 College, Cambridge *. 



[Received Marcli l(i, 1910.] 

 (Plate LXXIY.t and Text-figures 69-78 ) 



Contents. 

 I. Introiluction. 



II. The Species captured at Innishkea. 

 111. Tlie Occiu'reiice of Hairs in Whales. 

 IV^. The Auditory Organ of Balcenoptera. 



V. The Asynanetrj' of the Odontocete Skull. 

 VI. Notes on the Species : — 



(1) Salfenoptera musculus Liiuueus. 

 ['J,) Balcenoptera sibhaldii Gray. 

 (3) I'hi/seter macrocephalus Liui'.a'Us. 

 VII. Miscellaneous Observations : — 



(1) Locality of Captures. 



(2) Diving Powers. 



(3) Copulation, Period of Gestation, and Rate of Breeding. 



I. Introductiox. 



Within the past seven years six whaling stations have been 

 established in various outlying parts of the British Isles. Four 

 stations have been opened on the mainland of Shetland, one in 

 North Harris in the Hebrides +, and one on the island of South 

 Innishkea in the west of Ireland. Mr. R. C. Haldane §, of 



* Coninninicatcd by Dr. Hans Gadow, F.R.S., F.Z.S. 



t For explanation of the Plate see p. 79'2. 



X For an admirable short account of the history of whaling and of its recent 

 establishment in Scotland, see two papers by the late Thomas Southwell : Aninils of 

 Scottish Nat. Hist. 1904, vol. xiii.p. 77 ; and Annals & Magazine of Nat. Hist. ser. 7, 

 vol. xvi. 1905. See also Lillie, Proc. Cainbridgo Phil. Soc. vol. xx . jit. iv. p. 347. 



§ H. C. Haldane, Annals of Scottish Nat. Hist. 19n-l-1909. 



