26o IIROOKLVX INSTITUTE MrSEfll. SCIENCE BULLETIN 2. 6. 
Synallaxis gutaxexsis gujaxensis (Gmelin). 
Motacilla giijanensis Gm., Syst. Nat. I. 1788. p. 988. 
Synallaxis guianensis Berlepsch &• Hartert, p. 59. 
This species was not observed on my earlier expeditions, but in 
July, 1907, two adult males were collecteil at Las Barrancas in the 
delta region. 
In the American Museum there is an adult female collected by 
Klages at La Union on the Caura River, Sept. 26, 1901. 
Eye dusky brown; bill above black, below slate grey; feet grey. 
The Tring Museum received specimens from La Pricion on the 
Caura River. 
Svn.\llaxis rutilaxs Temminck. 
Synallaxis nttilaiis Temm., PI. Col. 1823. p. 227; Berlepsch & Hartert. 
p. 60. 
Seen only on the upper river aboxe the falls of Maipures. at 
Nericagua. Klages and Andre both collected specimens on the 
Caura River (Suapure, La Pricion, Nicare and La Union) that were 
sent to the Tring Museum. There are two females in the American 
Museum collected by Klages at Suapure on the Caura Ri^-er. one in 
September, the other in February. 
Siptorxis vulpixa alopecias ( Pelzeln). 
Synallaxis alopecias Pelz., Sitz. Akad. \\'ien. XXXI\'. 1859. p. loi. 
Synallaxis vulpina alopecias Berlepsch & Hartert. p. 59. 
Common at Ciudad Bolivar and at all poiius visited along the 
Orinoco up to and beyond the falls of Maipures. It frequents the 
thickets bordering streams and ponds. 
Adults have the eye vandyke brown: ))ill dark Ijrown above, lilac 
grey lielow ; feet sage green. 
A nest and two fresh eggs were collected at Caicara July 2. 1907. 
One egg of the set was accidentally crushed, the remaining egg is 
pure, dull white, ovate in form and measures 20x15.5 mm. Three 
weeks prior to the collecting of the eggs and nest a pair of Fox-red 
Spine-tails were observed hovering about what appeared to be a mass 
of drift grass that had lodged between the forks at the top of a slender 
