OSTEOLOGY OF ANTARCTIC SEALS. 



201 



have also examined the crania of the seals in the University Museum of Science and 

 Arts, Edinburgh, and include such in the following list : — 



2. 1. 5 



Weddell seal : 2 1 specimens with formula . 

 1 specimen ,, ,, 



2. 1. 5 



2. 1. 6 

 2. 1. 5 



The fourth post-canine in the upper jaw was obviously split into two, thus account- 

 ing for the variation. 



Sea-leopard : 5 specimens with dental formula 

 Crab-eating seal : 7 specimens with formula 

 Sea-lion (Otaria Jubata) : 2 specimens with formula 

 1 specimen „ „ 



2. 1. 5 



2. 1. 5 



2. 1. 5 

 27T~5 



3. 1. 5 

 3. 1. 5 



3. 1. 6 



3. 1. 5 



LITERATURE. 



The Zoology of the Voyage of the " Erebus " and " Terror" pp. 7-8, plates vii. and viii. 



J. E. Gray, Ommatophoca Rossi, 1844. 



Challenger Reports, vol. xxvi., Sir Wm. Turner, 1888. 



Resultats du Voyage du S.Y. " Belgica," G. E. H. Barrett Hamilton, 1901. 



National Antarctic Expedition : Natural History, vol. ii., E. A. Wilson. 



DESCRIPTION OF PLATE. 

 Fig. 1. — Ross skull, No. 43. Superior aspect. 



Fig. 2. — Ross skull, No. 43. Lateral aspect. 



Fig. 3. — Ross skull, No. 43. Anterior aspect. 



Fig. 4. — Ross skull, No. 43. Inferior aspect. 



Fig. 5. — Ross seal, No. 43. 15th dorsal vertebra. 

 Showing costal process on right side, and 

 facet for rib on left side. 



Fig. 6. — Eoss seal, No. 43. Femur showing 

 non-articular area on head. 



18 FEB. 1910 



