BALAENA. R ACH I ANECTKS. MEGAPTERA. M 



Type locality. Greenland Seas. 



Geogr. Distr. Arctic Ocean, Bering Sea. south to N. latitude 

 64 on east coast of Greenland, and coast of Labrador; in Bering 

 Sea to N. latitude 55''', and in sea of Okhotsk, to latitude 54'. 



Genl. Char. Head very large, more than one-third the entire 

 length; upper jaw narrow but highly arched; rami of mandible widely 

 spread posteriorly. Baleen very long, sometimes 10 to 12 feet, 

 highly elastic, frayed at ends into long soft hairs. Vertebra-, 55. 



Color. Black, with more or less white about the throat and fins; 

 old individuals are of a brown color. 



Measurements. Total length, 50 to 65 feet. 



9. kuzira. {Mega/'tera), Gray, Cat. Seals and Whales, 1866, p. 130. 

 cdllamak. Pall. Zoog. Ross. Asiat., 1831, i, p. 288, 

 antarctica, Teram. (nee F. Cuv). Faun. Japan, 1842, p. 21, 



pi. 30. 

 australis, Schrenck, (nee Gray), Reis. Amur-Land, 1858, i, p. 193. 

 Type locality. Coast of Japan. 



Geogr. Distr. Japan Seas, North Pacific, Bering Sea. 

 Genl. Cliar. Head small, narrow, pointed; pectoral short. 

 Color. Black, belly whitish, sides white spotted. 



<». Rachianectes. 

 Rachianectes. Cope, Proc. Acad. Nat. Scien. Phil,, i86g, p. 15. Type 

 A. glaucus. Cope. 

 Head small; body elongated; pectoral fin narrow; dorsal fin 

 absent; skin of throat smooth. Baleen short and coarse. 



10 glaucus. {Agapheliis), Cope. Proc. Acad. Nat. Scien. Phil., 1868, 

 p. 225. 



Type locality. Coast of California. 



Geogr. Distr. North Pacific and Arctic Oceans, Okhotsk and 

 Bering Seas. Coast of California to the Arctic. 



Genl. Char. Superior outline of head conve.x: size moderately 

 large. 



Color. Mottled gra}', sometimes blackish. 



^feasure>lle>lts. Total length, 35 to 40 feet. 



7. Megaptera. 



Megaptera. Gray, Ann. and Mag. Nat. Hist., 1864, pp. 207, 350. 

 Type Af. longimana, Gray. 

 Kyphobahrna. Eschr. Nord. Wallth., 1845. 

 Megapteron. Gray, Zool. Erebus and Terror, 1846, p. 61. 

 Megapteropsis. Van Ben. Nouv. Mem. Acad. Brux., 1861. p. 38. 



