in the Wings of the Ratit^e. 



127 



In the adult A2:>te7'i/x oweni the metacarpal piece {" manus") 

 is certainly compound^ the segment belonging to the pollex 



Fiff. 3. 



Manus of Droiiifens. 



H, radius ; U, ulna ; ?•, radial carpal ; //, second metacarpal ; III, third 

 metacarpal, rudimentary ; 2, 2a, phalanges of second digit ; cl, claw. 



being evidently added to that of the index ; this ray or digit 

 has only two phalanges, and the distal joint carries a small 

 curved claw. 



Fi-. 4. 



Manus of Ajjteri/.r. 



i?, radius ; U, ulna ; r, radial carpal ; 7)i, fused metacarpals ; cl, claw at 

 end of second dis'it. 



In Apteryx australis there appears to be only one finger, 

 the index, with its terminal claw, and with only two 

 phalanges ; the " manus " is broad, proximally, and is 

 evidently compound. 



My son. Prof. T. J. Parker, who is now working out the 

 development of the Kiwi, tells me that in the early embryo 

 the outward and visible form of the three normal ornithic 

 fingers can be seen, but that there are not three tracts of 



