CATALOGUE OF THE CETACEA. 283 
Order CETE. 
Suborder Denticete. 
Superfamily DELPHINOIDEA. 
Family Delphinid/E. 
Subfamily DelpiiinapteriNjE. 
Genus Delphinapterus, Lac. 
Delphinajrierus, Lacepede, Lilljeborg, Gill, 95. 
Beluga, Gray, 1871, p. 94. Auctorum. 
Delphinapterus catodon. PI. xviii, fig. 1. 
Beluga, of Scaninion, Proc. Phil. Acad. 1869, p. 57. 
Beluga catodon, Gray, 1866, p. 307, fig. 61 ; 1871, p. 94. 
Physeter catodon, Linn., S. N. 107. 
Delphinus leucas, Gmelin, S. N. 1232. 
Delphinapterus beluga, Lacepede, Get. 243, 1804. 
Arctic Seas, Bering Sea, Ochotsk, Japan? 
Pure white. Twelve to sixteen feet long. Skulls in B. M. Three skulls from Norton Sound, 
Dall, Coll. S. I. Doctor Gray, having examined skulls collected by Captain Kellett, R. N., from 
Bering Strait, unites the beluga of the western seas with that of the north of Europe. The teeth 
in specimens (80 or 90 in number) examined by me, in Norton Sound, Bering Sea, varied from 
| to ||; often being unequal in number on opposite sides. 
Genus Monodon, Linn. 
Monodon monoceros. 
Monodon monoceros, Linn. Faun. Suec. 2, 16 ; S. N. i, 105. 
Narwhal. 
Arctic Seas. 
Specimens are sometimes brought overland, across eastern Siberia, by the natives, and sold to 
traders in the Ochotsk Sea. 
Subfamily Delphinin^e, Gill, p. 95. 
Genus Delphinus, Gray. 
Ddphinus, Gray, 1871, p. 67. 
Delphinus Bairdii. PI. xix, fig. 1. 
D. Bairdii, Dal. Prel. Descr. Proc. Cal. Acad. Sci. v, Jan. 1873. 
Back, posterior sides, fins and flukes, black. Anterior sides gray, with two narrow lateral 
white stripes. A white, lanceolate, belly- patch. Full descriptions of the colors and measurements 
