( 400 ) 



148. Bucco macrodactylus (Spix). 



Oyphoa macrodactylut Spix, Ar. lim*. i. p. 51. tab. xxxix. fig. 2 (1824.— " in sylvis flum. 



Amazonum "). 

 Bucco macrodactylus, Pelzeln, Zur Ornith. Bras. i. 1867. p. 22 (S. Joao do Crato). 



Nos. 1131, 1197, 1205. i 3 9 , Humaytba, 21, 31. viii., 1. ix. 06. "Iris reddish 

 or pale brown, feet and bill black." 



No. 1131 is much brighter buff on throat and bell)- than the two others, 

 and agrees in that respect with specimens from Eastern Ecuador and Bogota 

 collections. 



140. *Bucco tamatia pulmentum Scl. 



[Bucco Tamatia Gmelin, Syst. Nat. 1. i. p. 405 (1788.— ex Daubenton, PI. ail. 74i*>, fig. 1.— Cayenne).] 

 Bucco pulmentum Sclater, P.Z.S. 1855. p. 194, tab. cvi. (Jan. 1850.— Upper Amazons). 



No. 1170. ? ad. in worn plumago, Humaytlia, 28. viii. 00. "Iris red, feet 

 brownish grey, bill black."— Wing 75 ; tail 60; bill 24 mm. 



Agrees with the type and other Upper Amazonian skins in the British 

 Museum. B. t. pulmentum is but a slightly differentiated geographical form 

 of />. t. tamatia, from which it may be distinguished by its much paler throat, which 

 is light buff yellow (Ridgw. vi. 19) instead of deep tawny. There is generally more 

 rufous on the forehead and vertex than in the typical race, but this is by no 

 means constant. 



As far as I know, this is the first record of B. t. pulmentum for Brazil. 

 I suspect, however, that the specimens obtained by Natterer in western Mattogrosso 

 and near Borba, on the Rio Madeira, which are enumerated in Pelzeln's work * 

 s.n. B. tamatia, will also turn out to belong to the present form. 



150. Bucco chacuru Vieill. 

 Bucco chacuru Vieillot, Nouv. Diet. iii. p. 239 (1816.— ex Azara No. 261 : Paraguay). 



Nos. 1235, 1245, 1262. Si ad. (in worn plumage), Humaytha, 14, 16, 18. ix. 06. 

 " Iris yellow or pale brown, feet dark grey, bill red."— Wing 82 — 85, tail 71 — 74, 

 bill, 31, 34, 35 mm. 



No. 1247. ¥ ad. (in worn plumage), Humaytha, 16. ix. 00. "Iris greyish 

 yellow, feet black, bill red."— Wing 86; tail 70; bill 31 J mm. 



According to Mr. Hoffmanns this bird is exclusively found in the " campos." 



These specimens do not differ from a series of Paraguay and South Brazilian 

 skins except by lacking the blackish cross-lines on the breast and foreneck, the 

 flanks alone being banded with dusky-brown. The under parts are nearly pure 

 white in the Humaytha birds, not washed with buff or ochreous, as in southern 

 specimens. The plumage of the former is, however, so much worn that I cauuot 

 say if these differences are of any value. 



151. Malacoptila rufa (Spix). 



Bucco ru/us Spix, Av. Bras. i. p. 52, tab. xl. fig. i. (1824.—" in syWis fl. Amazonum "). 



No. 1256. ? ad. (slightly moulting), Humaytha, 17. ix. 06. "Iris dark red, 

 feet grey, bill black."— Wing 88; tail 67 ; bill 27 mm. 



Differs from a female from Para by its deeper ferruginous frontal band and 

 rather more rnfesceut brown back. 



* Zur Ornith. Brasil. i. 18G7. p. 22 (Engenho do Gama, S. Vicente, Borba). 



