.loiuiial of Morphology I'ol.niC. 



5't 



It, I 



Pixvin. 



.56. 



n/ 



nf 



m in 



prs 



4. 



:>' 



60. 



■^ 



63. 



6't 



65. 



iuh-Msi Kh'trr.ir*H}rM rrM^fui-^'-' 



Figs. o2-m. 



