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Report U.S. F. C. 1883:—True. Cetaceans. PLATE XL 
31. Sibbaldius veliferus, (Cope). Pacific Finback Whale. 
Length, 80 feet. (After Scammon.) 
32. Balena mysticetus, Linné. Bowhead Whale. 
Length, 60 feet. (After Scammon.) 
GENERA OF CETACEANS. 
