Genus — N OTOFALCO. 
Notofalco Mathews, Austral Avian Record, 
p. 56, 1913 
Vol. II 
Type N. suhniger. 
At the place quoted I differentiated this genus thus : “ Differs from 
Rhynchodon Nitzsch in its much longer wings, longer tail, and weaker feet.” 
This decision was arrived at after examination of specimens, when I could 
not exactly match this form with any of the known divisions of Falco. 
Recourse to literature showed that it had been placed in Oennaia and 
Hiero falco, always with Falco hypoleucus. It certainly did not group with 
the last-named, nor to me with Gennaia or Hiero falco. 
Large Falconine bird with large hooked bill, toothed on the edges of both 
mandibles, long wings, long tail, strong legs and feet. 
The wing has the second primary longest, the third longer than the first, 
which, however, much exceeds the fourth. 
The tail is square, very long, almost two-thirds the length of the wing. 
The middle toe is not especially lengthened, being noticeably less than 
the tarsus. All the other large Falcons disagree : thus Rhynchodon has long 
middle toe and Hierofalco has a shorter tail at sight. 
It is at the present time superficially unlike all other large Falcons. 
Gurney placed it with Gennaia, which is a Falcon intermediate between 
Falco and Rhynchodon, with long middle toe. 
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