46 PALCONID^. 



shaded with ashy ; thighs and abdomen black ; under tail-coverts 

 white ; cere yellow ; bare space round eye orange-yellow ; feet dull 

 flesh-colour ; iris hazel. Total length 50 inches, culmen 3, wing 

 25-5, tail 2'3, tarsus 13-5. 



Young. Coloured like the adult, but duller ; head distinctly 

 crested ; upper wing- and upper and under tail-coverts marked with 

 subterminal spots of dusky brown ; the black thighs and abdomen 

 with cross lines of dusky brov.n ; iris grey. 



Hab. The same as that of the genus. 



a. Ad. St. Cape of Good Hope. Major-Gen. T. Hardwicke [P.] 



b. Ad. St. Cape of Good Hope. 



c. d juv. St. S. Afi-ica. Sir A. Smith [CI 



d. Ad. sk. Lake Ashangi, April 29, W. T. Blanford, Esq. [C], 



1868. 



e. Skeleton. 



/. Sternum. W. T. Blanford, Esq. [C.]. 



Subfamily IV. ACCIPITRIN^. 



Outer toe connected to middle toe by an interdigital membrane ; 

 tibia and tarsus to aU intents equal in length, the diflerence between 

 them not so great as the length of hind claw. 



Key to the Genera. 



a. Lores entirely bare, as well as the sides of 



the face and region of the mouth, ex- 

 tending above the eye and over the ear- 

 coverts 15. PoLYBOKOrDES, 



b. Sides of face feathered, the lores always fiu-- p. 47. 



nished with bristles. 

 «'. Hinder aspect of tarsus reticulate. 



a". Nostrils oval, with no bony excres- 

 cence 16. Cmcus, p. 50. 



b". Nostrils round, with a bony excres- 

 cence 17. MiCBASTUB, p. 74. 



b'. Hinder aspect of tarsus scaled. 



c". Ridge of bill measured from margin of 

 cere greater than half length of 

 middle toe without claw. 

 c". Commissure slightly festooned. 

 c'"'. Outer toe veiy short, equal to 

 two thirds of length of inner toe 

 (without claw) ; thigh-feathers 

 close-set, having no overhang- 

 ing tuft of feathers 18. Gehanospizias, 



d"". Outer toe longer than inner toe p. 80. 



without claw; thighs with over- 

 hanging tuft of plumes ; tail 



longer than winq 19. Frotbiorchis, 



p. 83. 



