spizaetus. . 259 



Key to the Sjjecies. 



A. Throat, fore-neek, and middle of breast uniform 



white ; sides of face, sides of neck, and sides 

 of breast chestnut-brown ; under tail-coverts 

 ■white, irregularly baiTed with brown *S'. oniatus, p. 2o0. 



B. Throat, fore-neck, and middle of bi-east streaked 



with black and Avhite ; sides of face and sides 

 of neck black ; under tail-coverts black regu- 

 larly barred with white 8. tijr annus, p. 2(30. 



163. Spizaetus ornatus. 

 Mauduit's Hawk-Eagle. 



Falco ornatus Daud. Traite. ii. p. 77, 1800 (Cayenne). 

 Spizaetus mauduyti Sharpe, Cat. B. Brit. Mus. i. p. 262, 1S71. 

 Spizaetus ornatus Salvin, Ibis, 1SS6, p. 75 (Bartica Grove) ; Quelcli. 



Timeliri (2) vi. p. 119, 1892 ; Brabom-ne & Chubb, B. S. Amer. i. 



p. 70, no. 651, 1912. 



"White-breasted Crowned Eagle" (Quelcli). 



Adult male. General colour of the upper surface black broadly 

 banded with brown on the tail and flioht-quills and narrowly edged 

 with while on tlie upper wiiig-covertSj back, and upper tail-coverts, 

 with a certain auiount of white on the inner webs of the primary 

 and secondary quills : crown of head and occipital crest uniform 

 black; hind-neck, sides of fiice^ and sides of breast chestnut-brown ; 

 a bhick line from the gape down the sides of the neck skirtiug the 

 white on the throat, fore-neck, and middle of breast ; remainder 

 of the under surface white, broadly barred with black on tlio 

 abdomen and axillaries, narrower on the under wing-coverts and 

 thighs, and more sparingly on the under tail-coverts. 



Total length GlO mm., culmen (including the cere) 39, wing 3G0, 

 tail 245, tarsus 87, middle toe and claw 70, hind claw without 

 toe 42. 



Immature female. Almost uniform white below, with scarcely 

 any trace of chestnut-brown on the sides of the breast and hinder 

 cheeks ; head white tinged with chestnut-brown ; remainder of 

 the u[)per surface chiefly brown. 



The descriptions of the male and female are taken from 

 exampk s collected on the Berbice River. 



Breedinfj-season. Unknown in British Guiana. 



Nest. Unrecorded in British Guiana. 



K'j'js. Undescribed from Briti.^h (iuiana. 



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