Dr. J. E. Gray on the Whalebone- Whales. 351 



I have been induced to refer it to this genus on account of the 

 high, triangular, roundish form of the canal of the spinal mar- 

 row of the cervical vertebrae, and the form of the lower jaw. 

 Lilljeborg referred it to Balanoptera on account of the form of 

 the blade-bone ; but the two species of Megaptera differ in the 

 form of that bone. The rib, as well as the blade-bone, is more 

 like that of Physaltis than Megaptera ; but I believe that it may 

 be a genus distinct from both. These observations are founded 

 on some drawings of the bones kindly sent to me by Professor 

 Lilljeborg. 



4. Megaptera Nova-Zelandia, Gray, Proc. Zool. Soc. 1864, 

 p. 207, f. 4 (ear-bones). 



Hab, New Zealand. Ear-bones in British Museum. 



There are, no doubt, other species of this genus, — as the Ber- 

 muda Humpback {Megaptera americana), described by Dudley, 

 Phil. Trans, xxxiii. 258; and the Japanese Humpback, or 

 Kugira {Megaptera Kugira), figured by Temminck in the ' Fauna 

 Japonica,' from a drawing brought home by Siebold, under the 

 name of BaUenoptera antarctica, t. 30 (not t. 23). 



Mitchell, the traveller in Australia, mentions a Humpback 

 Whale inhabiting Portland Bay, Australia Felix; and others 

 have been mentioned as inhabiting Terra del Fuego, Staten 

 Land, by Cook, and Kamtschatka and Behring's Strait by 

 Pallas. 



B. The trve Finnert have a high, erect, compressed, falcate dorsal fin, 

 a moderate-sized pectoral fin, with stout arm-bones and short fingers, 

 joints 4 to 7 J ama ths neural canal of the cervical vertebra is broad 

 and low. 



a. The dorsal fin is about three-fourths the entire length from the snout ; 

 and the cervical vertebra are not anchylosed together. The neural 

 etmal oblong, transverse. Ribs 14 to 16. 



2. Benedenia. 



The second cervical vertebra with two short lateral processes. 

 Ribs 15 ; first single-headed, with a compressed internal process. 

 The ramus of the lower jaw is moderate ; lower jaw-bones thick, 

 convex on the side. Vertebrae 60. 



Benedenia Knoxii, Gray, Proc. Zool. Soc. 1864, 209. 



Coronoid process of the lower jaw low and broad. 



Hab. Coast of Wales ; Northern Seas. Skeleton, Brit. Mus. 



Mr. Flower has shown me the drawing of a skeleton of what 

 appears to be a second North-Sea species of this genus, which 

 has a well-developed ramus to the lower jaw. 



