[17] COLLECTING SPECIMENS OF CETACEANS. 
the description pass instead to the newt letter of the alphabet which bears 
the same number. ] 
a. Whalebone in the upper jaw; no teeth; blow-holes, two. 
«@. No fin or hump on the back ; no furrows on the belly. 
a®, Whalebone very long (7 to 12 feet); color of body black. 
Balena. Bowhead and Right whales. (32.) 
(Arctic and temperate seas. ) 
b8. Whalebone short (14 to 16 inches), yellow; color of body gray, mottled. 
Rhachianectes. The Gray whale. (27.) (North 
Pacific Ocean.) 
@, Whalebone short and white; color of body black above; base of pectorals 
white, tips black.. Agaphelus. Scragg whale. (North Atlantic Ocean.) 
Neobalena. Pygmy bowhead. [Only the 
bones and whalebone known.] (New Zeal- 
and. ) 
b?. A hump on the back; furrows on the belly ; pectorals as long as the head. 
Megaptera. Humpback whales. (28.) (All 
seas. ) 
@,. A fin on the back. Furrows on the belly. Pectorals shorter than the head. 
d@. Fin on the back about as near to the head as to the tail. A band of white 
across the pectoral (?). 
Balenoptera. Piked whales. (29.) (Allseas.) 
é&. Fin on the back much nearer to the tail than to the head. 
Phusalus and Sibbaldius, Fin-back and sul- 
phur-bottom whales. (30 and 31.) (All 
seas. ) 
6}. No whalebone in the mouth, 
@. Noteeth. One (or occasionally two) twisted tusk 5 to 8 feet long, protruding 
from the jaw. Color of the body light, mottled. 
Monodon. TheNarwhal. (15.) (Arctic Seas.) 
é*. 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). 
Hyperoédon (26). Ziphius (female and young 
male); Mesoplodon (female and young 
male). (24.) Bottle-nosed whales. (All 
seas. ) 
f?. Teeth in the lower jaw only. 
F3%. Visible teeth only two; in the tip of the lower jaw. 
Ziphius (adult male). Bottled-nosed whales. 
(23.) (AIL seas.) 
g°. Visible teeth only two ; in the side of the lower jaw. 
Mesoplodon (adult male). Bottle-nosed 
whales. (24a.) (North Atlantic and North 
Pacific Oceans. ) 
8. Visible teeth only four ; near the tip of the lower jaw. 
Berardius. (adult male). (25.) (New Zea- 
land and Bering Island.) 
#®, Teeth 6 to 14, not sharp-pointed. Head rounded. Fin at the middle of the 
back; moderate. 
; Grampus. The grampuses. (17.) (Temperate 
seas. ) 
7°. 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.) 
