FALCONID^. 



41 



GENUS XXV.— ICTINIA, Vieillot. 



Rostrum breve; mandibula 



superior subdentata, hife- 



rior emarginata. 

 Tarsi breves, debiles ; acro- 



tarsia scutellata. 

 Alw longae; remex tertia 



longissima. 



Beak short ; the upper man- 

 dible somewhat dentate, the 

 under emarginate. 



Tarsi short, weak ; acrotarsia 

 scutellated. 



Wings long ; the tJiird quill 

 longest. 



Sp. 1. Ic. plumbea. 



Falco plumbeus. Shavo, v. vii. p. 196. Temm. PI. Col. 180. 

 Lath, Gen, Hist, v. xii. — Cayenne. 



GENUS XXVI.— -CIRCUS Auctorum. HARRIER. 



Rostrum mediocre ; nares 



siibovales. 

 Tarsi elongati; acrotarsia 



scutellata. 

 Digiti plerumque breves. 

 Remex tertia longissima^ 

 Capitis latera plumarum cir- 



culo instructa, disco capi- 



tali Strigium persimili. 



Beah mediocral ; nostrils 



somewhat oval. 

 Tarsi elongated ; acrotarsia 



scutellated. 

 Toes generally short. 

 Third quill longest. 

 Sides of the head furnished 



with a circle of feathers 



resembling that of the 



Owls. 



Sp. 1. Ci. aeruginosus. 



Falco seruginosus. Skaiv, v. vn. p. \\6. — Falco rufus. Skatv, 

 V. vii, p. 113 and 150 — Britain and Em*ope. 

 Sp. 2. Ci. pygargus. 



Falco Cyaneus. Shaw, v. vii. p. 1 63, — Falco montanus. Shaw, 

 V. vii. p. 183. — Britain and Europe. 



Sp. 3. C. cinerascens. 



Ci. Jiisco-cinereus subtus albidus, rachidibus pennarum spadiceis, 

 remigibus secundariis fasciis tribus nigricantibus. 



