Cephalorhynchus hectori Van Beneden, 1881 

 (Hector dolphin). Coastal waters of New 

 Zealand. A "pied" color phase has been 

 given the name C. h. bicolor Oliver, 1946. 

 C. alhifwns True, 1899 (white-headed dol- 

 phin) is said to occur in New Zealand waters, 

 but it is not mentioned by Oliver, 1922a; 

 perhaps it also is a color aberration of C. 

 hectori. 

 Genus Lagenorhynchus Gray, 1846. Bierman 

 and Slijper (1948) have concluded that four 

 or five species are valid. 



Lagenorhynchus alhirostns Gray, 1846 

 (white-beaked dolphin). North Atlantic. 



Lagenorhynchus acutus Gray, 1828 (Atlantic 

 white-sided dolphin). North Atlantic. 



Lagenorhynchus obliquidens Gill, 1865 (?- 

 L. thicolea Gtay , 1849) (Pacific white-sided 

 dolphin; Pacific striped dolphin). North 

 Pacific. Possibly conspecific with L. 

 cruciger. 



Lagenorhynchus cruciger Quoy and Gaimard, 

 1824. (Dusky dolphin). Southern Ocean from 

 about 25° S. to the border of pack ice. Syno- 

 nyms include L. superciliosus Lesson and 

 Gamot, 1826; L. obscurus Gray, 1828; L. 

 fitzroyi Waterhouse, 1839; L. australis 

 Peale, 1848; L. wilsoni Lillie, 1915; and 

 Sagmatias amblodon Cope, 1866. 



Lagenorhynchus electra Gray, 1846 (broad- 

 beaked dolphin). Tropical Atlantic, Pacific, 

 and Indian Oceans. 

 Genus Lagenodelphis Fraser, 1956 



Lagenodelphis hosei Fraser, 1956 (Sarawak 

 dolphin). Known only from a skeleton from 

 the mouth of the Lutong River, Sarawak, 

 Borneo. 

 Genus Delphinus Linnaeus, 1758 



Delphinus delphis Linnaeus, 1758 (common 

 dolphin). Warm and temperate waters of all 

 seas. Three races are recognized (Tomilin, 

 1957): D. d. delphis in the Atlantic and (?) 

 Indian Oceans; D. d. bairdi Dall, 1873, in 

 the Pacific; and D. d. ponticus Barabash, 

 1935, isolated in the Black Sea. 



Delphinus capensis Gray, 1828 (Cape dol- 

 phin). South Africa, Japan, and (?) Palestine. 



Delphinus roseiventris Wagner, 1853 (red- 

 bellied dolphin). Banda Sea and Torres 

 Strait. 



Genus Stenella Gray, 1866. (= Prodelphinus 

 Van Beneden and Gervais, 1877). There is 



no appropriate vernacular name for this 

 group, though "spotted dolphins" and 

 "ocean dolphins" have been used. Fraser 

 (1949, p. 332) stated that "a host of species 

 has been described" and E Herman and 

 Morrison-Scott (1951, p. 732) stated that 

 "this genus is in chaos." All (?) oceans. 

 This genus seems to be divisible into three 

 species-groups: (1) relatively long-snouted 

 forms with about 50 teeth in each jaw, and 

 a rather uniform coloration, typified by S. 

 longirostris; (2) shorter snouted forms with 

 about 44 teeth in each jaw, and a dark stripe 

 along the flank, typified by S. caeruleoalbus; 

 and (3) shorter snouted forms with about 37 

 teeth in each jaw, usually more or less 

 spotted, and often with a "bridle" pattern 

 on the head, which include plagio don, 

 frontalis, and attenuata. The taxonomy of 

 the latter group, particularly, is in a chaotic 

 state. All that can be done at present is to 

 list the better known forms, and include 

 as possible synonyms those named forms 

 that seem to be closest to them. See Fraser, 

 1950. 



Stenella longirostris Gray, 1828 (long-beaked 

 dolphin). (?) All tropical seas. Possible 

 synonyms include S. microps Gray, 1846, 

 from the Tres Marias Islands off the west 

 coast of Mexico, and 5. alope Gray, 1850, 

 from Ceylon. 



Stenella caeruleoalba Meyen, 1833 (blue 

 dolphin; blue-white dolphin; euphrosyne 

 dolphin). Recorded from South African, South 

 American, and New Zealand waters. S. c. 

 euphrosyne Gray, 1846 (- S. c. styx Gray, 

 1846) from the North Atlantic and North 

 Pacific appears to represent a distinct race. 



Stenella plagiodon Cope, 1866 (spotted dol- 

 phin). Tropical Atlantic. Stenella graffmani 

 Lonnberg, 1934, from the tropical eastern 

 Pacific is perhaps closely related. 



Stenella frontalis G. Cuvier, 1829 (? - S. 

 dubia G. Cuvier, 1812; "S. fraenata F. 

 Cuvier, 1836) (bridled dolphin). Warmer 

 waters of Atlantic and Indian Oceans. 



Stenella attenuata Gray, 1846 (? - S. ma- 

 layana Lesson, 1826) (narrow-snouted dol- 

 phin). Tropical Atlantic and Indian Oceans. 



Genus Lissodelphis Gloger, 1841 

 Lissodelphis borealis Peale, 1848 (northern 

 right-whale dolphin). North Pacific. 



