66 TURSIOPS. 



KEY TO THE SPECIES. 



A. Teeth conical, smooth; palate without lateral grooves; 



pterygoids in contact. PAGE 



a. Plumbeous gray above, white beneath T. truncatus 56 



b. All black T gilli 56 



FIG. XX. TURSIOPS TRUNCATUS. BOTTLE-NOSED PORPOISE. 



41. truncatus Montagu., Mem. Wern. Soc., in, 1821, p. 73. True, 



Proc. Acad. Nat. Scien. Phil., 1903, p. 313. 

 compressicauda Less., Ce"t., 1828, p. 199. 

 communis Fitzin. (nee Cuv.), Carr, Dalm., 1846, p. 75. 

 metis Gray, Ereb. & Terror, Zool., 1846, p. 38, pi. 17. 

 cymodice Gray, Ereb. & Terror, Zool., 1846, p. 38, pi. 17. 

 eurynome Gray, Ereb. & Terror, Zool., 1846, p. 38, pi. 18. 

 tursio (Tursiops}, Elliot, Syn. N. Am. Mamm., 1901, p. 29. 



BOTTLED-NOSED PORPOISE OR DOLPHIN. 



Type locality. Coast of Greenland. 



Geogr. Distr. Atlantic Ocean, Mediterranean Sea, widely dis- 

 tributed; Atlantic coast of Atlantic States, Maine to Florida, Gulf of 

 Mexico. 



Genl. Char. Those of the genus. Frontal bone has no backward 

 extension and the parietal is broad inferiorly. 



Color. Upper part of fin is plumbeous gray, tinged with purple, 

 grading on sides into the pure white of the under parts. 



Measurements. Total length, 2907; of mouth, 319; height of 

 dorsal fin, 229; breadth of flukes, 612. Skull: total length, 432; 

 length of beak, 108; length of tooth row, 195; width between inter- 

 orbitals, 191; length of mandible, 365. 



42. gilli (Tursiops), Dall, Proc. Calif. Acad. Scien., v, 1873, p. 13. 



Elliot, Syn. N. Am. Mamm., 1901, p. 29. 

 GILL'S DOLPHIN. Cow-FiSH. 



Type locality. North Pacific Ocean. 



