prove that the animal once lived there, though that 

 is not improbable" (Stejneger 1897). A skull frag- 

 ment about 19,000 yr old was dredged from the sea 

 floor off Monterey, Calif. (Jones 1967). Remains 

 have also been recovered from Pleistocene deposits 

 on Amchitka in the Aleutian Islands (Gard 1972). 

 Recent rumors (Berzin et al. 1963) of living sea cows 

 near Cape Navarin, Siberia, have been discredited. 



Familv TRICHECHIDAE 



Atlantic, B. a. davidsoni Scammon, 1872, in the 

 North Pacific, and B. a. bonaerensis Burmeister, 

 1867, in the Southern Hemisphere (Omura 1975). 

 Specimens from Ceylon have also been described as 

 a separate subspecies, B. a. thalmaha Deraniyagala, 

 1963, but its validity requires confirmation. 



Balaenoptera edeni Anderson, 1878 (Bryde whale). 

 Tropical and warm temperate waters of the Atlantic, 

 Indian, and Pacific oceans. 



Genus TRICHECHUS Linnaeus, 1758 



Three allopatric species are recognized (Hatt 1934), 

 but their status needs confirmation. 



Trichechus manatus Linnaeus, 1758 (Caribbean 



manatee; West Indian manatee). 

 Two doubtfully valid subspecies have been des- 

 cribed: T. m. manatus from the sea coast, and lower 

 reaches of rivers, from Bay of Campeche, Mexico, to 

 northeastern South America, and in the Bahamas 

 and the Greater Antilles; and T. m. latirostris (Har- 

 lan 1824) from the coast and coastal rivers of United 

 States from Beaufort, N.C., to Florida Keys and 

 coast of Gulf of Mexico, westward to mouth of Rio 

 Grande. 



Trichechus senegalensis Link, 1795 (West African 



manatee). 



Coastal lagoons and the lower reaches of rivers from 

 Senegal to the Cuanza River, Angola, and in the 

 Niger and Benue drainages of Nigeria. 



Trichechus inunguis (Natterer, 1883) (Amazon 

 manatee). 



Rivers of northeastern South America, particularly 



the Amazon and Orinoco systems. 



Order MYSTICETI 



Family ESCHRICHTIIDAE 



Genus ESCHRICHTIUS Gray, 1864 



Eschrichtius robustus (Lilljeborg, 1861) (gray whale). 

 Shallow coastal waters of the North Pacific. There 

 are two stocks, one on the eastern side from the Gulf 

 of California to the Chukchi and Beaufort seas, 

 another on the western side from Korea and Japan 

 to the Okhotsk Sea; the latter stock is nearly ex- 

 tinct. Formerlv in the North Atlantic. 



Balaenoptera borealis Lesson, 1828 (sei whale). 

 All oceans except tropical and polar seas. Two sub- 

 species distinguished: a smaller one, B. b. borealis, 

 in the Northern Hemisphere and a larger one, B. b. 

 schlegellii Flower, 1865, in the Southern Hemi- 

 sphere. 



Balaenoptera physalus (Linnaeus, 1758) (fin whale). 

 All oceans, but rarely in tropical waters or among 

 pack ice. Two subspecies are recognized: a smaller 

 Northern Hemisphere form, B. p. physalus, and a 

 larger Southern Hemisphere form, B. p. quoyi 

 (Fischer, 1829). 



Balaenoptera musculus (Linnaeus, 1758) (blue whale). 

 All oceans. Three subspecies are recognized: a small 

 one, B. m. musculus, in the North Atlantic and 

 North Pacific; a large one, B. m. intermedia Bur- 

 meister, 1871, that spends the summer in Antarctic 

 waters; and a pygmy subspecies, B. m. brevicauda 

 Ichihara, 1966, in the southern Indian Ocean. (The 

 name B. m. brevicauda, published by Zemsky and 

 Boronin 1964, is a nomen nudum according to van 

 Bree, pers. commun.; the first valid publication of 

 the name was by Ichihara 1966.) The taxonomic 

 status of blue whales off the coasts of Chile and Peru 

 and in the northern Indian Ocean is not settled. 



Genus MEGAPTERA Gray, 1846 



Megaptera novaeangliae (Borowski, 1781) (humpback 



whale). 



Nearly worldwide; winters largely in tropical waters 

 near islands or the coast, summers in temperate and 

 subpolar waters. This species shows little or no 

 geographical variation in size; the several discrete 

 populations differ in the frequency of color 

 variations. 



Familv BALAENIDAE 



Familv BALAENOPTERIDAE 



Genus BALAENA Linnaeus, 1758 



Genus BALAENOPTERA Lacepede 1804 



Balaenoptera acutorostrata Lacepede, 1804 (minke 



whale). 



Widely distributed in all oceans. Three subspecies 

 are recognizable: B. a. acutorostrata in the North 



Some authors place glacialis in a separate genus, 

 Eubalaena Gray, 1864. Eschricht and Reinhardt (1861), 

 the only authors who have made a detailed comparison 

 between mysticetus and glacialis, regarded them as con- 

 generic. Gray's generic name was ignored by virtually all 

 subsequent authors until it was resurrected by Allen 



