141 



Genus BUTEOGALLUS, Lesson. 



Baleogallas Lessox, Traite Oru. 1831, 83. Type, Falo CBq^idnoctialis Gmelix. 



Ch. — Extremely similar to Unthitinga, the main difference being in 

 the coloration; but diiferiug somewhat also in the relative proportion of 

 the lateral toes and the degree of development of the loral bristles. 

 The latter are almost entirelj- wanting, and the outer toe is not appre- 

 ciably longer than the inner. 



It is extremely doubtful vrhether this form should be allowed more 

 than subgeneric rank, the resemblance in most respects to Uruhitinga 

 being so exceedingly close. The points of difference * pointed out above 

 are indeed trifling, though characteristic; and although the adult 

 plumage is strikingly different from that of any of the species of 

 Uruhitinga, the young stage is quite similar to that of U. antliracina. 



BUTEOGALLUS .EQUIXOCTIALIS. 



Falco a^quiuoctialis Gm. S. N. i, 1763, 265. 



ButeocequlnoctlaUs Gray, List Ace. B. M. 1843. 37 ; Hand List, i, 1869, 9.— Strickl. 

 Orn. Syn. i, 1855, 42.— Schl. Mus. P.-B. Buteoues, 1862, 18. 



Morphiuis cfquinodialis Gray, Gen. iii, App. 1849, 1. 



Mypomorphnus cequivoctialis Suxd. Grit, om Levaill. 1858, 25. 



Uruhitinga {ButeogaUus) wqHi^loctiaJisB.IT>G^y. Pr. Boston Soc. N. H., May, 1373, 63. 



Buteogallus cequinoctialis ScL. & Salv. Nora. Neotr. 1873, 119. — Sharpe, Cat. Ace. 

 B. M. 1874, 212. 

 Falco huson Daud. Tr. ii, ISOO, 163. 



Bideo hison ViG. Zool. Journ. i, 1824, 340. 



Buteogallus luson Gray, List Gen. 1340, 2. — Bonap. Cuusp. i, 1850, 17. 



Daptrius iuson Gray, List Ace. B. M. 1844, 14. 



Morphnus buson Gray, Gen. i, 1845, 15. 

 Le Buson Levaill. Ois. d'Afr. i, 1799, 86, pi. 21. — Suxd. Grit, oui Leyaill. 1358, 25. 



Hab. — Northern South America. Columbia (Sharpe) ; Demerara 

 (Br. Mus., fide Sharpe) ; Cavenne (Mus. Boston Soc). 



Wing, 12.20-13.40; tail, 7.00-7.50; culmen, 1.00-1.05; tarsus, 2.80-3.00 ; 

 middle toe, 1.50-1.70. Third quill longest ;* first longer than ninth. Tail 

 even, or slightly emarginate. Adult: — Head, neck, and upper partsgener- 

 ally blackish-brown ; lower parts, secondaries (except a broad terminal 

 band), and broad borders to the larger scapulars lateritious-rufous, or 

 brick-red, the lower parts barred transversely with dusky. Tail deep 

 black, narrowly tipped with white, and crossed about the middle portion 

 by a narrow band (generally interrupted) of pale grayish. Young: — 

 Above plain dull grayish-brown, the primaries black. Feathers of the 

 head, neck, and back narrowly edged with dull ochraceous; secondaries 

 obscurely barred with dusky and wing-coverts sometimes bordered with 

 ochraceous. Beneath, pale ochraceous (or ochraceous-white), with a 

 collar of dusky spots across the lower part of the throat; breast and 

 abdomen nearly immaculate ; tibix plain, or faintly si>otted transversely 

 with dusky. Tail grayish-brown, mixed on the basal half of the outer, 

 and on nearly the whole extent of the inner, webs with ochraceous, and 

 narrowly and obscurely barred toward the base with dusky. 



Seven specimens examined, in mus. Philadelphia Acad#ray. 



* B. a'quiuoctialis a.t^rees with U. anfhrachia in the following important external de- 

 tails: Remiges 24 : outer four primaries with inner webs shallowly siuuated, the siuu- 

 atioD just appreciable on the fourth. Tail even or slightly emarginated. 



