92 



]!^ew York, forwarded his large and remarkably fine collection for study 

 in this connection. Altogether, we have been enabled to examine and 

 compare ni)ward of four hundred specimens, including thirteen species, 

 as follows : — 



List of species and specimens examined. 





.0 



3 



s 



3 ■ 



1 



(0 



S 



o 



o 

 a2 



a 



o 



o 



n 



3 



o 

 N 



e. 



S 

 o 

 O 



D 



s 



a 



6 



to 



s 



> 



d 



1 



O 



3 



'3 

 1 



3 



1 

 o 



1 



o 

 O 



o 



1. jSTisns cooperi 



2. Xisiis gimdlachi 



75 

 •2 

 8 

 5 

 3 



18 



3 



4| 3 



9 







6 



7 



3 



123 









2 



5 1 

 1 



2 i 



7 j 1 



5 













21 



4. INTisns pileatns 













13 

















3 







1 







7 

 2 



8 













7 



















o 





2 6 







2 











18 











1 









I 





3 3 1 



1>20 14 7 



3 3 



::::::i:::::: 



1 



3 

 12 



7 









11 





5 9 



1 

 2 





2 



8 

 1 



4 



182 





18 





I 1 









1 



















Total 



218 1 50 1 15 1 20 : 13 



20 



39 



1 



8 



16 1 7 



407 



Of the above-named species, three are not included by Mr. Sharpe : 

 N. (jundlaclti, being mentioned in a foot-note, and doubtfully referred 

 to -A"^. cooperi; iV. nigropUimJjeus, is referred to N. ventraliSj while JV. salvini 

 is new, and first named here. On the other hand, there are two species 

 of this genus which we have not seen, viz, N. guttatus and N.fringil- 

 loideSj both of which appear to be perfectly distinct. 



Subgenera. 



Eegarding subgeneric divisions of the above group of species, sev- 

 eral have been proposed and named, but we are unable to make out more 

 than two which are capable of definition; these two groups constitute 

 quite distinct subgenera, and may be characterized as follows : — 



j!:^isrs. — Five outer primaries, with inner webs emarginated ; fourth 

 or fifth quills longest j inner toe not reaching middle of second joint of 

 middle toe. 



HiEEASPiziAS. — Four outer primaries, with inner webs emarginated ; 

 hird or fourth quills longest j inner toe reaching to or beyond middle 

 f second joint of middle toe. ^ 



Subgenus NISUS, Cuyiee. 



AccipUer Brissox, Orn. i, 1760, 10. — Type, Falco nisns Linn. (= X. fnngillarius). 



u^lsus CuviEE, Legons Auat. Comp. i, tabl. ois. 1799. — Same type. 



lerax Leach, Syst. Cat. Mam. etc. Brit. Mns. 1816, 10. — Same type. 



Cooperastur Boxapaete, Eev. et Mag. de Zool. 1^54, 538. — Type, Falco stanleyi Aud. 



(= N. cooperi). 

 Lepfohierax Sundevall, Disp. Ace. Hemeroliarp, 1872, 24. — Same type. 



Characters. — Five outer primaries with inner webs emarginated ; 

 fourth or fifth quills longest; inner toe reaching scarcely beyond the- 

 first joint of the middle toe, or falling short of it. 



