184 Mr. ViGORs's and Dr. Horsfield's Description of the 



Pectus rufescenti-albiclum, rhachibus rufis. licniigum mar- 

 go internus albo angulatus, rufo-variegatus. Rectrices sub- 

 tils alba?. Rostrum pallidum apice nigro. Longituclo cor- 

 poris, 12^ ; alee a carpo ad remigem secundam, 10; caudce, 

 6 ; rostri, f ; tarsi, 1^. 



" This bird," as we are informed by Mr. Caley, " is called 

 Nankeen llawk by the settlers. It is a migratory species. My 

 specimens were shot in May and June 1803. At that time the 

 species was plentiful ; but ever afterwards I observed it but 

 sparingly. On the 3rd of August 1804, I made the following 

 note : — I saw no Nankeen llazcks this autumn. — 1 never observed 

 it attacking the fowls." 



The species is closely allied to a group which is noted for the 

 general similarity and the corresponding disposition of its co- 

 lours ; and which includes our Kestril, F. tinnunculus, Linn, 

 the Yiiyx^^iç of Aristotle ; the newly- characterized European spe- 

 cies, F. tinnuneuloides, Temm. ; the African species, F. rupico- 

 lus, Daud. ; and some others. The group may be observed to 

 possess a greater shortness of wing than is usual among the true 

 Falcons; a character, which points out the passage from those 

 birds to the llaicks. Our species appears decidedly distinct 

 from any of the group which we have met with. 



3. Beiîigora. F. rufo-brunncus, gula, col/o, nuchaque pallidê 

 aurantiacis, tcctricibus re?nigibas<jue fusco-brunneis rufo-no- 

 tatis, rectricibus cineracco-brunneis rufo-fasciatis apice pal- 

 lido. 



Rost? urn pedesque plumbei. Fteronuituvi re>nigumc\ne pogonia 

 interna rufo-fasciata ; externa, remigum quatuor extimarum 

 pogoniis exceptis, rufo-maculata. Tectrices inferiores rufip. 

 Remiges subtus ad basin albidœ, ad apii^em fusca?. Femora 



parce 



