201 



M. 1139. Cast of the first rib. The original is figured by Van 

 Beneden, op. cit. pi. vii. fig. 5. Purchased. 



M. 1138. Cast of a portion of the sternum. The original is figured 

 by Yan Beneden, op. dt. pi. viii. fig. 4. Purchased. 



M. 1136. Cast of the sixth cervical vertebra (imperfect). The 

 original is figured by Yan Beneden, op. dt. pi. viii. fig. 3. 



Purchased. 



M. 1137. Cast of the sacrum (imperfect). The original is figured 

 by Yan Beneden, op. cit. pi. vii. fig. 4. Purchased. 



M. 1141. Cast of the ilium (imperfect). The original is figured by 

 Yan Beneden, op. cit. pi. vii. fig. 3. Purchased. 



Family PHOCID^. 

 Dentition (in existing forms) : 1. 1, C. \, Pm. J, M. \. 



Genus MESOTARI A, Yan Beneden l . 



This genus is provisionally referred by its founder to the Otariidce ; 

 but Allen, in the 'History of the North-American Pinnipeds,' 

 pp. 217-220 (1880), classes it in the present family. 



Mesotaria ambigua, Yan Beneden 2 . 



This species is considered to be allied to the existing Cystophora 

 cristata. 



Hob. 3 Europe. 



M. 1152. Casts of two molars. The originals are figured by Yan 

 Beneden in the Ann. Mus. R. Hist. Nat. Belg. vol. i. 

 pi. ix. figs. 1, 2. 



M. 1165. Cast of the left scapula. The original is figured by Yan 

 Beneden, op. cit. fig. 7. 



M. 1155. Cast of the humerus. The original is figured by Yan 

 Beneden, op. cit. figs. 9, 11. 



M, 1156. Cast of the right innominate. The original is figured by 

 Yan Beneden, op. cit. fig. 8. 



1 Bull. Ac. E. Belg. ser. 2, vol. xli. p. 783 (1876). 2 Loc. cit. 



3 The originals of the casts of this and the following genera of Seals were 

 obtained from the Antwerp Crag, and are preserved in the Museum at Brussels. 

 The casts were acquired by purchase. 



