58 PRODELPHINUS. 
b. Dark gray above, spotted with light gray; PAGE 
breadth of rostrum at base, 75; at middle, 
46; Debween Orbits, tae hs ss hee eee eters P. longirostris 58 
c. Black above; breadth of rostrum at middle, 
66,067 at ase, Gro.82.. caw.ce «te eis es cree 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. Zodl., 1828, p. 1. 
microps Gray, Spicil. Zodl., 1828, p. 1. 
alope Gray, Erebus & Terror, Zo6l., 1846, p. 42, pl. 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, se vertebre, 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, Zodl., 1846, 
p. 40, pl. 22. Id. Cat. Seals & Whales, 1866, p. 251. Elliot, 
Syn. N. Am. Mamm., 1901, p. 30. 
styx Gray, Erebus & Terror, Zodl., 1846, p. 39, pl. 2. 
tethyos Gerv., Bull. Soc. Agr. Herault, 1853, XL, p. 150, pl. 1. 
marginatus (Duvern.), Pucher., Rev. Zoél., 1854, p. 547. 
doreides Gray, Cat. Cet., 1866, p. 400. 
