24 CETACEA. 



Skull : Nose narrow, broad behind, and contracted in front. 

 Temporal bone broad. Interorbital space wide. Lower jaw much 

 arched. Cuv. Oss. Foss. v. t. 26. f. 1, 3. Cervical vertebrae well 

 developed and separate. The first rib is forked at the end near 

 the vertebra. The baleen is short, broad, triangular, much longer 

 than broad at the base, rapidly attenuated, edged with a series of 

 bristle-like fibres, which become much thicker and more rigid 

 near and at the tip. Rather twisted, especially when dry. 



The fostal specimens exhibit numerous rudimentary teeth in 

 both jaws. These are figured by Eschricht, Danish Trans, iv. 

 t. 4. f. a, b, from specimens 35 and 45 inches long. Copied Zool. 

 Erebus and Terror, t. 30. f. 2-14. 



Bunch Whale, Dudley, Phil Trans, xxxii. No. 387, 258. 



Humpback Whale, Whalers, Beale, Hist. Sperm W. 12. 



Balsena nodosa, Bonnat. Get. 5. 



Balaenoptera, pars, Lacep. 



Megaptera, Gray, Zool. Ereb. 8f Terror, 16. 



Megapteron, Gray, Zool. Ereb. fy Terror, 51. 



Mysticetus, sp. Wagler, N. S. Amp. 33. 1840. 



Balamoptera, Boops, Brandt, Voy. AL Orient. 4to, 1845. 



? Cyphonotus, Rafin. Anal. Nat. 61. 1815 (no character nor 



type). 



Kyphobalajna, Eschricht, Nord Wallthier. 1849, fol. 

 Balsenoptera leucopteron. Lesson, in the Nouv. Tab. Reg. Anim. 



202, gives this name to "La Hump-back des pecheurs" of the 



" Hautes latitudes S." 



The. Bunch Whales are easily known from the Finners (Balce- 

 noptera), in being shorter and more robust, the skull nearly ^ the 

 entire length, the head wider between the eyes, the mouth larger, 

 the lip warty, and the nose large and rounded ; the plaits of the 

 belly and throat are broad ; the dorsal is more forward, the pec- 

 toral larger and narrow, about the length of the body, and the 

 tail is wider, and the lobes generally more pointed. 



The skull of this genus is intermediate in form between that of 

 Balcena and Balcenoptera. 



This kind of whale was noticed by Dudley (Phil. Trans, xxxiii. 

 258). He says, " The Bunch or Hump-backed Whale has a bunch 

 standing in the place where the fin does in the Fin-back ; this 

 bunch is as big as a man's head, and a foot high, shaped like a 

 plug pointing backwards. The bone (whalebone) is not worth 

 much, though somewhat better than the Fin-back. His fin (pec- 

 toral) is sometimes 18 feet long, and very white. Roth Fin-backs 

 and Hump-backs are shaped in reeves (folds) longitudinally from 

 head to tail, on their belly and sides, as far as their fins, which 

 are about half-way up the sides." 



