130 



Bidiis inephis. — Anterior aspect of the left tarso-metatarsus 

 superficial deposits of Mauritius. -J. 



from the 



A. 70. The right ulna ; locality unknown. The great development 

 of the ridge forming the outer boundarj' of the surface for 

 the insertion of the brachialis anticus is remarkable in a 

 bird incapable of flight. Presented hij Sir R. Owen, K.C.B. 



Family PTEROCLID^. 



The angle of the mandible is produced into a strongly upcurved process, as 

 in the Gallinse. The tarso-metatarsus differs from that of the Cohimbidce by its 

 extreme shortness, the presence of only a single point of attachment for the 

 tibialis anticus, tho lesser depth of the depression for the flexor hallucis, the 

 absence of a complete tube in the talon, and the lesser inward extension of the 

 second trochlea ; wliile the hallux is very small. 



Genus PTEROCLES, Temminck'. 



The type genus. 



Pterocles septiltus, Milne-Edwards -. 

 Known by the tarso-metatarsus, which approaches that of P. alvhafa, but is 

 somewhat larger, with stouter extremities. 

 Hah. Europe (France). 

 From the Lower Miocene (Upper Oligocene) of Allier. 



1 Hist. Nat. d. Pigeons et Galliu. vol. iii. p. 712 (1815). 

 * Oiseaux Fossiles de la France, vol. ii. p. 294 (1869-71). 



