Report U.S. F. C. 1883.—True. Cetaceans. PLATE III. 
7. Delphinus delphis, Linné. Common Dolphin. 
Length, 6} fect. (From asketch by J. H. Emerton.) 
8. Prodelphinus punctatus, (Gray) True. Spotted Dolphin. 
Length, 6 feet. (After Gray.) 
9. Leucorhamphus borealis, (Peale) Dall. Right-whale Porpoise. 
Length, 8 feet. (From a sketch by William I. Dall.) 
GENERA OF CETACEANS. 
