11. HYDROPS ALIS, 599 



the basal half, tipped with pale sandy grey; central rectrices 

 elongated, but only little more than half as long as the lateral ones, 

 pale grey in colour, with many narrow irregular and some broader 

 and more regular bars of a deep blackish-browu colour; general 

 colour of the lower surface bufFy white, with brownish and blackish 

 ^P°^\^"<:^ bars ; breast very dark, with some rufous-buff spots, chin 

 and throat paler, abdomen and lower tail-coverts almost uniform, 

 lotal length about 15- 5 inches, wing 6-5, lateral rectrices 11 to 13 

 central 6-5 to 7, tarsus 0-7. ' 



Adult female. Without any greatly elongated taU-feathers ; band 

 across the hind neck less pure; abdomen and lower tail-coverts 

 barred ; rectrices entirely barred and without any white. Lateral 

 rectrices 5-4 inches, central 4-8, wing 6-3. 



rounder males have the tail-feathers much shorter and the lower 

 abdomen more barred. The more spot-like appearance of the pale 

 border of the outer web of the first primary is also a sign of im- 

 maturity. Some specimens are paler, others darker, with the nuchal 

 band sometimes darker rufous. 



Bab. Brazil, with the exception of the southern parts. 

 a-/>. d ad. sk. Brazil. Tweeddale Coll. 



\- ^''- St. Brazil. Gould Coll. 



A;-;j^ c? imm. sk. Brazil. Gould Coll. 



!?.? ad.sk. Brazil. Sclater Coll. 



'■'■'• cTad.st. Brazil. Pm-chased. 



t. 6 ad. ; it, V. Bahia, Brazil ( Wucherer). Salvm-Godman Coll 



? ad. sk. 

 u\ 5 ad. sk. Chapada, Matto Grosso. Brazil Salvin-Godmaii Coll 



{H. H. SmUh). 



2. Hydropsalis furcifera. 



Ibiyau cola de tixera, Azava, Ajmnt. no. 309 (180.5). 



Caprimulgus furcifer, Vieill. Nouv. Diet. x. p. 242 (1817) 



Hydropsalis furcifera, Bp. Consp. i. p. .58 (1850) ; Set. ^- SaL Nomend. 



p. Ub (18/3) ; Durnford, Ibis, 1877, p. 185 (Buenos Ayi-es) • Bar- 



roivs, Auk, 1884:, p. 24 (Entrerios) ; Berl. J.f. 0. 1887 p ]-:>0 



(Paraguay) ; Scl. S^- Hudson, Arc/entine Oni.' ii. p. 15, ' p],' xii. 



Hydropsalis psalurus, Bunn. Si/st. Ueb. ii. p. 381 (1856) ; id La- 

 Plata Reise, ii. p. 450 (18G1 ; Parana). ^ j • " 



Hydropsalis torquata, Lee, Ibis, 187-3, p. 134 (Gualeguaychii). 



Hydropsalis azarse, Wayl. Isis, 1832, p. 1222 (Paraguay) 



Hydropsalis pallescens, Pelz. Verh. zool.-bot. Ges. Wien Ififi.-i 

 p. 986 ; id. Orn. Bras. p. 11 (1867). ' ' 



Adult male. Similar to the male of H. torquata, but paler and 

 larger, the nuchal collar buff instead of rufous, the abdomen less 

 whitish and rather buff. Total length about 20 inches, wino- 7-4 

 lateral rectrices 15, central 7-5. ' " ' 



Adult female. Similar to the female of H. torquata, but much 

 larger and generally paler ; the band across the neck paler Wino- 

 6-8 inches, lateral rectrices 6-8, central 5-7. " 



Hah. From Matto Grosso and the Western parts of Bolivia 

 throughout Southern Brazil, Paraguay, Uruguay, and Argentina. 



