58 



KTIKNNi: (.KOITKOY SAINT-HILAIRE 



young birds, rudiments of episternals and xiphisternals also 

 occur. The minuteness of the episternals and the xiphi- 



_/) 



6 



0> 



tUO 



o 

 O 



V 



p 



>^ 



K 

 I 



sternals may be attributed to the gigantic size of the ento- 

 stcrnal, in accordance with the I.oi <tc balancement, 

 In the other air-breathing Vertebrates the nine sternal 

 elements can according to Geoffrey be discovered without 



