76 
Mr. O. Salvin on Birds 
Climacocercus concentricus (Less.), Cab. in Schomb. Guiana, 
iii. p. 738. 
Bartica Grove, Camaeusa. 
< 500. Geranospizias gracilis. 
Ischnosceles gracilis (Temm.), Cab. in Schomb. Guiana, iii. 
p. 737. 
There are no specimens of Geranospizias in Mr. Whitely's 
collection, so that I am unable to say whether the Guianan 
bird belongs to G. gracilis or to G. hemidactylus , races united 
by Mr. Sharpe under VieilloEs name ccerulescens (Cat. B. 
Brit. Mus. i. p. 81). But on this point see Mr. Gurney’s 
remarks (Ibis, 1875, p. 233). 
| 501. Hyfotriorchis femoralis. 
Hypotriorchis femoralis (Temm.), Cab. in Schomb. Guiana, 
iii. p. 734. 
Falco fusco-ccerulescens, Vieill., Sharpe, Cat. B. Brit. Mus. 
i. p. 400. 
Roraima (3500 ft.). 
502. Hypotriorchis rufigularis. 
Falco rufigularis , Daud. Traite, ii. p. 131. 
Falco aurantius , Cab. in Schomb. Guiana, iii. p. 733. 
Falco albigularis , Daud., Sharpe, Cat. B. Brit. Mus. i. p.401. 
Bartica Grove, Camaeusa, Roraima (3500 ft.). 
I 503. Tinnunculus isabellinus. 
Falco isabellinus, Sw. An. in Menag. p. 281. 
Cerchneis isabellina , Sharpe, Cat. B. Brit. Mus. i. p. 441. 
Cerchneis sparverius, Cab. in Schomb. Guiana, iii. p. 734. 
Roraima (3500 ft.). 
504. Elanoides furcatus. 
Nauclerus furcatus (Linn.), Cab. in Schomb. Guiana, iii. 
p. 735. 
Elanoides furcatus, Sharpe, Cat. B. Brit. Mus. i. p. 317. 
Bartica Grove. 
•1 505. Elanus leucurus. 
Elanus leucurus (Vieill.), Cab. in Schomb. Guiana, iii. 
p. 735 ; Sharpe, Cat. B. Brit. Mus. i. p. 339. 
Roraima (3500 ft.). 
