58 PRODELPHINUS. 



b. Dark gray above, spotted with light gray; PAGE 

 breadth of rostrum at base, 75; at middle, 



46; between orbits, 140 P. longirostris 58 



c. Black above; breadth of rostrum at middle, 



60.96; at base, 210.82 P. euphrosyne 58 



43. plagiodon (Delphinus) , Cope, Proc. Acad. Nat. Scien. Phil., 1866, 



p. 296. 



plagiodon (Prodelphinus) , Elliot, Syn. N. Am. Mamm., 1901, p. 31. 

 SHARP-TOOTHED DOLPHIN. 



Type locality. Eastern coast of United States. 



Geogr. Distr. Atlantic coast of the United States, Cape Hatteras 

 to Gulf of Mexico. 



Genl. Char. Dorsal fin high, recurved; pectoral fins broad at base; 

 beak stout. 



Color. Above purplish gray, shading on the sides into the white 

 of the under parts ; upper parts and fins spotted with white or gray ; 

 lower parts spotted with dark gray. 



Measurements. Total length, 2157; length of mouth, 280; of 

 pectoral fin, 304; end of beak to dorsal, 337; height of dorsal, 241; 

 breadth of flukes, 527. 



44. longirostris (Delphinus) , Gray, Spicil. Zool., 1828, p. i. 

 micro ps Gray, Spicil. Zool., 1828, p. i. 



alope Gray, Erebus & Terror, Zool., 1846, p. 42, pi. 25. 



stenorhynchus Gray, Cat. Seals & Whales, 1866, p. 396. 

 LONG-NOSED DOLPHIN. 



Type locality. Cape of Good Hope. 



Geogr. Distr. Southern Oceans. Taken off Tres Marias Islands, 

 Mexico. 



Genl. Char. Dorsal high ; nose three-fifths total length of animal ; 

 teeth formula, f^E^'. vertebrae, C. 7; D. 14; L. 17-18; C. 34, =72-73. 



Color. Above dark slate gray, mottled with pale gray; beneath 

 white. 



Measurements. Total length, 390-420; beak, 70-80; width of 

 beak at base of maxillary notches, 75-86. 



45. euphrosyne (Prodelphinus} , Gray, Erebus & Terror, Zool., 1846, 



p. 40, pi. 22. Id. Cat. Seals & Whales, 1866, p. 251. Elliot, 



Syn. N. Am. Mamm., 1901, p. 30. 

 styx Gray, Erebus & Terror, Zool., 1846, p. 39, pi. 2. 

 tethyos Gerv., Bull. Soc. Agr. Herault, 1853, XL, p. 150, pi. i. 

 marginatus (Duvern.), Pucher., Rev. Zool., 1854, p. 547. 

 doreides Gray, Cat. Get., 1866, p. 400. 



