CIRCUS SWAINSONII.— Smith. 



AvEs— Plates XLIII and XLIV. 



C pallide griseiis, flavo-grisco unibratus ; siibtus albus, guttwre pectorcqiie griseo-tinetis ; caiidiB tectricibu^ 

 siiperioribus albis, maculis, fasciisquc flavo-griseis notatis ; rcctricibus duabus interniediis giiseis, flavo- 

 griseo tinctis, lateralibus partim griscis partim albis fasciis brunnois sex notatis. Rostro livido-nigro ; 

 cera, jwdibus, oculisque flavis. 



LONGITUDO ] line. 



Circus SwaiiNsonii, Smith. — South African Quarterly Journal, vol. i. jtage 384, 1830. 

 Circus pallidus, Sykes.— Pioceedings of the Zoological Society of London, 1832, page 80. 



{Adult Mule. Plate XLIII. Fig. 1.) 



Colour. — Above ash-grej', clouded with yellowish-grey. The front, the 

 eye-brows, the upper tail-coverts, the inner surface of the shoulders, and all 

 the under parts snow-white, the throat and breast tinted with pearl-gre}% 

 and the tail-coverts blotched and barred with yellow or brownish-grey. 

 Lesser wing-coverts, primary and secondary quill-coverts, scapulars, tertiary 

 quill-feathers, and a few of the innermost secondaries the same colour as the 

 back; the secondary quill-coverts narrowly tipped with white, and like the 

 tertiaries and innermost secondaries broadly edged internally with the same 

 colour. The basal half of the inner vane of each primary quill-feather white, 

 variegated with incomplete brown bars, the last half dark liver-brown, passing 

 into white at the extreme points ; outer vanes towards the tips brown, more or 

 less deeply tinged with grey, the three or four outermost grey towards the 

 <iuills. The two centre tail-feathers ash-grey clouded with yellowish-grey, 

 and with faint indications of dark bars on each side of the shafts; the next 

 two of each side, more or less of the same colour, and with six imperfect dull 

 brown bars, each obscurely edged anteriorly and posteriorly with dirty white ; 

 the three outermost feathers white with six incomplete brownish-grey bars, those 

 of the outer vanes on some of the feathers being connected with each other 

 externally by the same colour, the bars of the exterior feather of each side 

 tinged with buft'-orange ; the tips of all the feathers white. Under surface of tail 

 white, with the dark bars obscurely marked. Bill livid black, with a yellow- 

 blotch on the edge of both upper and under mandible near base ; cere, legs and 

 toes yellow. Claws a dark horn colour. Eyes yellow. 



The feathers of all the upper parts of this bird have a distinct silky lustre. 



Form, &c. — Figure long and slender. Bill delicate and strongly hooked, 

 the cere covered with strong recumbent bristles ; cervical collar distinctly 

 marked, wings when folded reach beyond the commencement of the last third 



