14 DELPHINIDiB. 



a. Articulated skeleton ; young male. (84. 9. 12. 3.) 



Kio Grande. Dr. H. von Ihring. Purchased, 1884. 



6. Skull. (1487 a— 66. VI. 3. 1.) 



Eio de I51 Plata. Dr. H. Burmeister [P.j. 



Described and figured in Trans. Z. S. vol. vi. pi. xxviii. 



Family III. DELPHINIDJE. 



1. mONODON. 



Monodon, lAnn. Syst. Nat. ed. 12, i. p. 105 (1766). 



1. Monodon mouoceros. 



(Narwhal.) 

 Monodon monoceros, lAnncats, he. cit. 



a. Articulated skeleton of male. (369 c.) 



b. Articulated skeleton of female. 



Greenland. Purchased, 1885. 



c. Skull of male with both tusks developed. 



Greenland. Purchased, 1885. 



d. Tusk of male. 



e. Tusk of male. 



/. Aborted rudimentary tusk. (369 d.) 



Davis Strait. Eobert Brown, Esq. [P.], 



g. Aborted rudimentary tusk. (55. 3. 11. 38.) 



Purchased, 1855. 



2. DELPHINAPTERUS. 



DelpHnaptems, Lac^pMe, Hist. Nat. CHacis, p. xli (1804) 

 Beluga, Gray, Spic. 'look i. p. 2 (1828). " - 



\ 1. Delphinapterus leucas. 

 (Beluga, or White Whale.) 



Delphinus leucas, Pallas, Iteise Sfc. iii. p. 85 (1776). 

 Balaena albicans, O. F. Miiller, Zool. Danica Prodr. p. 7 (1776) 

 Delphinapterus beluga, Laclede, Hist. Nat. C^tacSs, p. 243 (1804) 

 Beluga catodbn (Physeter catodon, Linn.), Gray, Zool. JEreb & 

 Terr. p. 29 (1846). " ^ 



o. Articulated skeleton. (367 a 1 



Greenland. "' 



