PHYLUM CHORDATA 



5(13 



long, coarse hairs, or with a tuft of such specially developed hairs 

 at the extremity. A mane of similar large hairs usually runs 



•,=<M(,..i)t 



«**'■ 



Fiy. 1117, /"'s.— Hippopotamus (lnppoi,„l,iMvs •i,„jih,l,;v.s). (I.'roi.i till; V,i.,nhrkl,t:'mdvi-al 



HMon,.) 



l-'li;. Ills.— Burchell's Zebra (S^^'1'5 lM',;-;,Ali). ([•'■■oiii tho Cuti'rriihj: Nalai-al Ihsloni ) 



along the dorsal surface of the neck. There is a wart-like 

 callosity above the wrist, and in the true Horses a second a little 

 below the heel or " hock." 



