[17] 



COLLECTING SPECIMENS OF CETACEANS. 1173 



the description pass instead to the next letter of the alphabet vfhich bears 

 the same number.] 



a». Whalebone in the upper jaw ; no teeth ; blow-holes, two. 

 a". No fin or hump on the back ; no furrows on the belly. 

 a3. Whalebone very long (7 to 12 feet) ; color of body black. 



Balcena. Bowheacl and Right whales. (32.) 

 (Arctic and temperate seas.) 

 h^. Whalebone short (14 to 16 inches), yellow ; color of body gray, mottled. 



Bhachianectes. The Gray whale. (27.) (North 

 Pacific Ocean.) 

 c3. Whalebone short and white ; color of body black above ; base of pectorals 

 Avhite, tips black . . Agaplielus. Scragg whale.? (North Atlantic Ocean. ) 

 Neoialcena. Pygmy bowhead. [Only the 

 bones and whalebone known.] (New Zeal- 

 and.) 

 h^. A hump on the back ; furrows on the belly ; pectorals as long as the head. 



Megaptera. Humpback Avhales. (28.) (All 

 seas.) 

 c*. A fin on the back. Furrows on the belly. Pectorals shorter than the head. 

 #. Fin on the back about as near to the head as to the tail. A band of white 

 across the pectoral (?). 



Balwnoptera. Piked whales. (29.) (All seas.) 

 ^. Fin on the back much nearer to the tail than to the head. 



Fhysalus and Sibbaldius. Fin-back and sul- 

 phur-bottom whales. (30 and 31.) (All 

 seas. ) 

 ¥. No whalebone in the mouth. 

 (P. No teeth. One (or occasionally two) twisted tusk 5 to 8 feet long, j)rotruding 

 from the jaw. Color of the body light, mottled. 



Monoclon. The Narwhal. (I.'j.) (Arctic Seas.) 



e*. No long tusk. No visible teeth in either jaw. Head with a beak. A small fin 



on the back nearer to the tail than to the head. Size rather large 



(16 to 33 feet). 



Hyperoodon (26). Ziphlus (female and young 



male) ; Mesoplodon (female and young 

 male). (24.) Bottle-nosed whales. (All 

 seas. ) 

 /2. Teeth in the lower jaw only. 

 p. Visible teeth only two ; in the tip of the lower jaw. 



ZipMibs (adult male). Bottled-nosed whales. 

 (23.) (AH seas.) 

 g^. Visible teeth only tioo ; in the side of the lower jaw. 



Mesoplodon (adult male). Bottle-nosed 

 whales. (24a.) (North Atlantic and North 

 Pacific Oceans.) 

 A3. Visible teeth on\j four ; near the tip of the lower jaw. 



Berardius. (adult male). (25.) (New Zea- 

 land and Bering Island.) 

 •i3. Teeth 6 to 14, not sharp-pointed. Head rounded. Fin at the middle of the 

 back; moderate. 



Grampus. The grampuses. (17.) (Temperate 

 seas.) 

 f. Teeth 18 to 30, very sharp-pointed. Head pointed. Fin on the back nearer 

 to the tail than to the head ; small. 



Kogia. Pygmy sperm whale. (22.) (Tem- 

 perate and tropical seas.) 



