ARCTOCEPHALUS. 175 



angles 10 inches, glenoido-vertebral 8 inches, moderately 

 falcate, prespinous more than twice as large as post- 

 spinous fossa, acromion rudimentary, no coracoid. 

 Humerus, length 7^ inches; no supracondyloid foramen; 

 radius 7^ inches ; ulna 8| inches, with large olecranon. 

 Manus with seven carpalia, pollex longest, minimus 

 shortest. Pelvis, length 8^ inches ; iliac crest 1-| inch 

 in front of base of sacrum ; femur 4| inches lono-, 

 tibia 8| inches, fibula 8^ inches. Tarsalia, eight bones, 

 the eighth being an entoscaphoid articulating with 

 the inner sides of the scaphoid and ento-cuneiform 

 bones. Digits almost equal in length. Skull, length 

 9| inches, face much broken ; breadth, zygomatic of 

 inches, cranial 3f inches. Hard palate deeply scooped 

 behind; length 4 inches: alveolar borders almost 

 parallel. Mandible 6| inches long. 



Challenger Collection. 



2. Skull, adult, no mandible, probably female. Length 

 8 inches, over vertex lOf inches ; zygomatic breadth 

 4| inches. Palate moderately concave on surface; 

 length from truncated border to pterygoid 1 inch; 



length of palate 3| inches. Dentition : 5 ^ , ^ ^ , ^ ^ ; 



teeth in place, large cusp with small supplementary 

 cusps, no diastema. 

 Messier Channel. Challenger Collection. 



3. Skull, male, aged, left zygoma wanting, no mandible. 



Length, 9i inches, over vertex 121 inches. Palate 



shallow, scooped out, from mid-posterior border suture 



to pterygoid 1| inch ; length of palate 4^ inches 



r» .-x- .33 11 Q 6 



Dentition : m. - - , c. - - , p.c. -- - ; post-canines 



without diastema ; teeth broken or lost. 

 Tuesday Bay, Desolation Island, Straits of Magellan. 



Donor— Dr R. 0. Cunningham. 



4. Skull, male, much damaged, aged, no mandible. Length 9i 



inches ; zygomatic breadth 5f inches. Palate shallow"", 

 scooped out behind ; distance to pterygoid 1 inch ; 



length 41 inches. Dentition: in. - ? , c. - -, p.c. - - ; 



teeth broken or lost; no diastema. Described by 

 Turner in Challenger Report, 1887. 

 Tuesday Bay, Desolation Island, Straits of Magellan. 



Donor— Dr R. O. Cunninoham. 



