184. 



On the "Manus" <>/ Phoeiiicopterus 



163 millim., so that tlie distal member of the Aving is more 

 than three fourths the length of the ulna, and five sixths the 

 lenetli of the humerus. 



Fi-. 2 



Fig. 1. Inner view of right maiuis of I'Jiamcupte-rns n/nij;ftlliahis, f uiit. 

 size, rd, radiale; u/, ulnare; d.c', 1st distal carpal; d.c'-, 2nd distal 

 carpal; ^/.c% 3rd distal carpal ; rnc', 1st metacarpal ; wic'-', 2nd meta- 

 carpal; mc^, 3rd metacarpal; 77ic^'^ rudiment of 4th metacai"pal; d(/', 

 1st digit (pollex) ; dff, 2nd digit (index) ; dr/S, 3rd digit. 



Fig. 2. Claw of pollex of ditto, 1^ nat. size. 



This, then, is a good average, as to these proportions, in a 

 long-winged bird, the most extraordinary forms being the 

 " Macrochires^' on the one hand, with their short arm and fore- 

 arm and enoi'mously long manus ; and on the other hand the 



