5. pnrsALUs. 159 



Cervical and part of dorsal vertebra) and the baleen in the British 

 Museum. Length 50 feet. 



The xippcr lateral processes of the third, fourth, and fifth cervical 

 vertebra} are very slender and bent dovs'n, with two slight angular 

 ridges on the outer edge ; the lower processes are much thicker and 

 bent up at the end, with a broad fiat lower edge near the base, which 

 forms an angle at the end. The bodies of the cervical vertebra? are 

 roundish oblong, rather wider below than above, about one-fourth 

 the width wider than they are high. The form of the body and the 

 slenderness and form of the lateral processes of the cervical vertebrae 

 seem to separate this species from P. antiquoriim, as well as the 

 separate form of the lateral processes. In the Plymouth specimen 

 of the latter in the Museum, the bodies of the cervical vertebrae are 

 oblong, transverse, being one-third the width broader than high. 



Fitr. 84. 



Second cervical vertebra of Physalus Di/f/itidii. 



Extreme length, measured by a cord, Soi inches ; height 12 inches. 

 Articulating sm'face : height 7 inches ; width 11 inches. 



Fiff. 35 



Fifth cervical vertebra of Physalus Duguidii. 



