Report U.S. F. C. 1883.—True. Cetaceans. PLATE ITI. 
4, Sotalia fluviatilis, (Gervais). River Dolphin. 
Length, 5 feet. (After Gervais.) 
Reetrece Saat 
5. Steno perspicillatus, Peters. Long-beaked Dolphin. 
Length, 8 feet. (?) (After Peters.) 
6. Tursiops tursio, (Bonnaterre) Van Ben. and Gervais. Common Bottle- 
nose Dolphin. 
Length, 11 feet. (After Flower.) 
GENERA OF CETACEANS. 
