54 



SPECIMENS OF CETACEA. 



the movements of the spine. From the Hamna Voe 

 specimen. See figure below. 



43. Vertebra, lumbar, from a B. sibhaldi stranded at Aber- 



dour, Fife, July 18.58. See Nos. 30 and 32. 



44. Larynx and Hyoid. Pouch from fmtus of Longniddry 



B. sibhaldi, opened to show the mucous lining and 

 follicles. It is at the front of the larynx and extends 

 from the thyroid cartilage to within 2 inches from 

 the bifurcation of the trachea ; it counnunicates with 

 the larynx between the thyroid and cricoid cartilages. 

 Its outer wall is muscular. Turner in Trans. Roy. 

 Soc. Edin., vol. xxvi., 1870. See figure below. 



