3 02 



THE MANUS. 



[CHAP. 



bone, although the first meta- 

 carpal so often assumes the 

 characters and position of a 

 carpal bone, that it may easily 

 be taken for it. 



The cuneiform always di- 

 rectly supports the fifth meta- 

 carpal, and frequently some 

 part of the fourth. Moreover, 

 in those species in which the 

 ulnar side of the carpus is 

 greatly reduced, as Globice- 

 phalus, the fifth metacarpal is 

 even connected with the ulna. 



In the Cachalot (Physeter} 

 many of the carpal bones, in 

 addition to the usual central 

 nucleus, have epiphysial ossifi- 

 cations developed in the peri- 

 phery of the cartilage, which 

 ultimately unite with the cen- 

 tral piece of bone. 



All the Cetacea with teeth 

 have five digits, though the 

 first is usually rudimentary 

 and in close contact with the 

 metacarpal of the second. 

 G. 105. Dorsal surface of bones of In some forms, as Fhysctcr, 



right anterior limb of Round-headed TT , , f , J, 



Dolphin (Globicephalus me/as), ^. HyperOOdOH, M Oil 0(1 OH, BelUgd, 



The shaded portions of the digits are j . jj, . 1 /n u 



cartilaginous, id trapezoid or magnum. Jnid^ J. l(ltCintSt(l, and C//YY7, the 



manus is short, broad, and 



rounded at its distal extremity ; the digits being nearly 

 equally developed, spreading from each other, and without 



I! 



