CHERRIE: ORNITHOLOGY OF THE ORINOCO REGION. 225 



Serpophaga. Inezia caudata and 7. subftava differ widely from the 

 typical species of Serpophaga in the style of coloration, being olive green 

 above and yellowish below, and in the absence of a concealed vertical 

 crown spot. The character of the tarsal envelope is also quite distinct, 

 being taxaspidean. 1 



As I have already pointed out (Sci. Bull. I. 1909. p. 390), in 

 fresh specimens of Inezia the acrotarsium is seen to cover the anterior 

 half of the tarsus only, on the inner side extending back a little farther 

 than on the outer side. "The upper posterior third of the back 

 of the tarsus seems to be entirely nonscutellate, but on the distal two- 

 thirds is a double series of small elongated scutella, one on each side." 



INEZIA SUBFLAVA (Sclater & Salvin). 

 Serpophaga subftava Sclater & Salvin, Nomencl. Av. Neotr. 1873. p. 158 



(Para, Brazil) ; Sclater, Cat. Birds Brit. Mus. XIV. 1888. p. 105. 

 Serpophaga subftava Berlepsch & Hartert, Novit. Zool. IX, 1902. 40-41, 



in part ("Munduapo," upper Orinoco, Venezuela). 



Berlepsch and Hartert (/. c.), called attention to the differences 

 between specimens from the middle Orinoco and an example from 

 Munduapo on the upper Orinoco, a difference which seems to be borne out 

 by the series in this museum from the middle and delta regions and a 

 single example from Nericagua on the upper river. And Mr; Hellmayr'- 

 who made a comparison between the type of subftava and a series of 

 /. caudata seemed to find exactly those differences pointed out by Ber- 

 lepsch and Hartert, and to be observed in the specimens before the 

 writer. 



I. caudata is distinguished from I. subfiava by slightly longer wings 

 and tail, by having the lower throat and upper breast suffused with 

 fulvous, the whitish chin spot spreading on to the upper throat, and 

 belly paler yellow. 



SERPOPHAGA HYPOLEUCA Sclater & Salvin. 

 Serpophaga hypoleuca Scl. & Salv., P. Z. S. 1866. p. 188 ; Berlepsch & 



Hartert, p. 41. 



On the three expeditions I have made to the Orinoco region, only 

 six of these rare little Flycatchers have been collected. Specimens were 



'Fresh specimens of Serpophaga hypoleuca that have been examined, have the acrotarsium extending 

 across the outer side, to and, for the distal two-thirds, around on to the back; on the inside it extends about 

 half way across. The area between the edges of the acrotarsium on the back and inner posterior half of 

 tarsus is occupied by a series of elongated quadrate (better described as oval, perhaps) scutella. On the 

 posterior outer half of the tarsus, above that portion of the acrotarsium extending on to the back, is a single 

 quadrate scutellum, and above that a nonscutellate triangular area. 



2 Novit. Zool. XIII. 1906. p. 323. 



