G6 Aplianapteiyx of Mauritius and Chatham Islands^. 



have not yet been found. I have figured (fig. 1) therefore 

 only the portion of A. HawMnsi corresponding to that known 

 of A. BroecM. It will be observed that, except in size, the 

 premaxillffi in the two forms agree very closely together. 

 The same, indeed, may be said of the humeri. The humerus 

 of A. liawkinsi (fig. 3) diff"ers from that of A. Broecld (fig. 4) 



oidy in being somewhat larger and stouter. The sternum of 

 the former (figs. 5 and 7, in its ventral and lateral aspects 

 respectively) is much more perfect than that of the latter, 

 v^hose anterior lateral processes and posterior portion (figs. 6 

 and 8) are all wanting. 



I think it will be generally conceded by those ornitho- 

 logists who compare the four pairs of drawings here given that 



