7Lew American Raptorial Birds. 177 



The following are tlie relative lengths of the first six pri- 

 maries in Messrs. Salvin and Godman's specimen of i?.j(j«?ci- 

 lochrous : — the 4th is the longest, the 3rd the next, then 

 successively the 5th, the 2nd and 6th, which are equal, and 

 the 1st. 



The coloration of this specimen may he thus described : — 

 The crown and sides of the head are of a slaty black ; the nape, 

 upper scapulars, and interscapulars are rich rufous, varied 

 with slaty black shaft-marks, which, on most of the feathers, 

 and especially on those of the nape, are of considerable breadth; 

 the lower scapulars are dark slate-colour, transversely barred 

 with white on the basal portion, and elsewhere irregularly 

 edged, barred, and sometimes spotted, with rufous ; the wing- 

 coverts and tertials are dark grey, irregularly barred on the 

 basal portion with white transverse markings, and on the 

 terminal and more exposed moiety of the feather with similar 

 but somewhat more regular bars of slaty black ; the secon- 

 daries are grey, barred with slaty black, and mottled with 

 white at the tip, and also on the outer edge of the inner web ; 

 the primaries are coloured similarly to the secondaries, but 

 of a darker grey, especially on the terminal portion, and with 

 only very narrow and inconspicuous pale tips ; the back is 

 dark slaty brown, edged with rufous ; the feathers on the 

 rump are similar, except that they are irregularly barred 



