114 HXRiraDrNID^. 



bases to the feathers ; wing-covcrts like the hack ; inner greater 

 coverts and secondaries blue-black, broadly and conspicuously edged 

 with white on the outer webs and round the tip ; the bastard- wing, 

 primary-coverts, and primaries black, glossed with dull steel-blue 

 externally ; lower back, rump, and upper tail-coverts white, with 

 blackish shaft-lines ; longer upper tail-coverts steel-blue ; tail- 

 feathers blackish glossed with steel-blue, with white bases to the 

 inner web; lores and feathers below the eye velvety black ; ear-coverts 

 and sides of neck glossy steel-blue like the head ; cheeks and 

 entire under surface of body pure white, including the thighs and 

 under tail-coverts, under wing-coverts and axillaries ; quills dusky 

 below : " legs greyish brown ; iris greyish brown " (Neuwied). 

 Total length 4-8 inches, culmen 0-4, wing 4, tail 1-9, tarsus 0*45. 



Adult female. Similar to the male in colour. Total length 4*8 

 inches, culmen 0-35, wing 4, tail 1'85, tarsus 0-4. {Mus. Salvin 

 and Goduian.) 



Obs. There does not seem to be much variation in plumage in 

 this species beyond that the shade of colour on the back varies 

 between green and blue, and the shaft-lines on the breast are more 

 distinct in some than in others ; they apparently become obscured 

 in winter, as is the case with other Swallows of this group. Some- 

 times the streaks on the rump and upper tail-coverts are very 

 broad. 



Hah. South America, from Southern Brazil, throughout Amazonia, 

 Peru, Columbia, Ecuador, and Guiana. 



«. Ad. st. South America. Lieut. Maw [P.]. 



b, c. Ad. ; d. Juv. sk. South America. Sclater Collection. 



e. (S ad. sk. Bartica Grove, British R. B. Shai-pe, Esq. [P.]. 



Guiana, May 8 (H. 

 Whitely). 



f, g. 5 ad. sk. Camacusa, British R. B. Sharpe, Esq. [P.]. 



Guiana, May 22 {H. 



Jlliitely). 



Demerara. Purchased. 



R. Oyapock, Cayenne Sclater Collection. 



(Jelski). 



BrazU. Gould Collection. 



Brazil. R. B. Sharpe, Esq. [P.]. 



Para, Lower Amazons. R. Graham, Esq. [P.]. 



Upper Amazons. H. W. Bates, Esq. [C.]. 



Pebas, E. Peru {Haux- Sclater Collection. 



well). 



r. Ad. sk. R. Amazon. R. B. Sharpe, Esq. [P.]. 



2. Tachycineta leucorrhous. 



Golondrina rahadilla blanca, Azara, Apunt. ii. p. 509 (1802) ; Hartl. 



Ind. Azara, p. 19 (1847). 

 Ilirundo leucorrLoa, Vieill. N. Diet. d'Hist. Nat. xiv. p. 519 (1817) ; 



Gray, Gen. B. i. p. 58 (1845) ; Burm. Th. Bras. iii. p. 144 (185G); 



Baird, Rev. Anier. B. p. 301 (1865) ; Scl. ^ Seilv. P. Z. S. 1868, 



p. 1^9, 1869, p. 597 ; Gray, Hand-l. B. i. p. 72, no. 847 (1869) ; 



