CATALOGUE OF VERTEBRATES. 515 



Sub-Order ODONTOCETE. 

 Family DCLPHINID^. 



Porpoises. 



. TURSIOPS, Gerv. 



T. tursio, Fabr. {Delfphinus, Phocxna, metis, &c.) Bottle-nosed Dolphin. 

 Sea Hog, &c. 



Beak moderate, tapering, marked oiF from forehead ; dorsal 

 and pectoral fins falcate ; color greenish gray, white below, some- 

 times spotted ; teeth, 22 in each half jaw ; length, 9 feet. Not 

 common on our coast. 



DELPHINUS, L. 



D. delphis, L. Sea Porpoise. " Dolphin." 



Body slender ; head slopes gradually into long beak ; pectorals 

 narrow ; color black above, lighter below, with gray lateral 

 bands; teeth, 46 to 51 in each half jaw; length, 7 feet. This 

 species frequents the high seas ; it should not be confounded with 

 a true fish called the " Dolphin." 



PRODBLPHINUS. Gerv. 



(DelpMnus.) 



P. plagiodon, Cope. Spotted Dolphin. 



Beak stout, shorter than preceding ; color dark purplish above, 

 with gray spots, and whitish below, with dark-gray oblong spots ; 

 teeth, 37 ; length, 7 feet. Southern — ranges northward to Cape 

 Hatteras. Inserted here for sake of comparison. 



P. frcenatus, F. Cuv. {D. clymene, G'r.) True Dolphin. 



Smaller than preceding ; color of belly sharply separated from 

 dark upper parts; spotted like former but smaller and more 

 numerous above ; teeth, 38 ; length, 6 feet. Rare. A specimen 

 from our coast is in the Philadelphia Academy. 



