14 DELPHIKID^. 



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



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



h. Skull. (1487 a— 66. 12. 3. 1.) 



Kio de la Plata. Dr. H. Burmeister [P.J. 



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



Family III. DELPHINID^. 



1. MONODON. 

 Monodon, Linn. Syst. Xat. ed. 12, i. p. 105 (1766). 



1. Monodon monoceros. 



(Xarwhal.) 

 Monodon monoceros, Linn(Bus, loc. cit. 



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



h. 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. Robert Brown, Esq. [P.J. 



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



Purchased, 1855. 



2. DELPHINAPTERUS. 



Delphinapterus, Laceptcle, Hist. Nut. Cetaces, p. xli (1804). 

 Beluga, Gray, Spic. Zool i. p. 2 (1828). 



1. DelpMnapterus leucas. 



(Beluga, or White Whale.) 



Delphinus leucas, PaJlas, Eeise ^-c. iii. p. 85 (1776). 

 BaUena albicans, O. F. Midler, Zoul. Banica Prodr. p. 7 (1776). 

 Delphinapterus beluga, Lacepkle, Hist. Xaf. Cctacrs, p. 243 (1804). 

 BeluiJ-a catodon (Physeter catodon, Linn.), Gray, Zoul. Ereb. <§• 

 Terr. p. 29 (1846). " 



a. Articulated skeleton. (367 a.) 



Greenland. 



