8. BALiENOPTEEA. 



191 



Boops), because it has only 11 dorsal, 36 lumbar, sacral, and caudal 

 vertebrae ; but he considers it the same as B. rostrata of 0. Fabricius, 

 Hunter, and Scoresby (Edinb. N. Phil. Journ. 1834, 199). Mr. Knox's 

 specimen is figured by Jardine under the name of the Lesser Rorqual 

 (Nat. Lib. vi. t. 7). Schlegel (Pauna Japon. 24, and Abhandl. 44) 

 erroneously refers to this figure as a representation of Balcerioptera 

 arctica (antarctica) ; for though the pectoral in the figure is larger 

 in proportion than it should be for a Bdlcmoptera, it is not of the 

 shape of the fins of Megaptera ; and the artist has made the fin of 

 both the animal and skeleton of the larger Eorquals too large in 

 proportion for the other parts of the body, and perhaps the length of 

 the body is foreshortened. 



Fig. 52. 





Tympanic bones of Balcenoptera rostrata. 

 Fig. 53. 



Top of first and second ribs of Balcenoptera rostrata. 



