1]6 Mr. C. H. B. Grant on Birds collected in Argentina, 



c. ? ad. Puerto Maria, Paraguay. Oct. 24, 1909. 



/. ? ad. Near Villa Franca, „ Nov. 6, 1909. 



(^. Irides yellow ; bill, legs, and toes brown. 



? . Irides pale yellow ; bill, legs, and toes horn-brown. 



The females taken on the 24th of October and 6th of 

 November were sitting. 



Only observed in the undergrowth and very tame. The 

 call is in several syllables and loud and clear. 



83. Hapalocercus flaviventris. 



Hapalocercus flaviventris Scl. Cat. B. xiv. p. 94 ; Arg. Orn. 

 i. p. 137. 



a. $ ad. Los Ynglases, Ajo. Oct. 27, 1908. 



b. <? ad. „ „ Nov. 4, 1908. 



c. ? young. „ „ Feb. 9, 1910. 

 Ad. Irides hazel ; bill, legs, and toes dark brown. 

 The young bird differs from the adult in being : — 

 "Above more buffy brown than 'mouse-brown/ edgings 



of the wing-feathers and coverts buffy brown ; below bright 

 buff ; throat buffy slate, centre of breast and belly and 

 under tail-coverts pale creamy yellow.^' 



A fairly common bird throughout the summer in the Ajo 

 district, frequenting rough situations, including the drier 

 parts of the caiiadon. It is retiring in habits, creeping about 

 the tall reeds, thistles, or grass, after the manner of a 

 Sedge-Warbler. 



I have only once come across the nest ; this was a deep 

 cup-shaped structure composed of water-weeds glued to- 

 gether and attached to the stems of some stout reeds, and 

 except for its larger size was similar to the nest of Cyanotis 

 ruhrig aster. 



84. Serpophaga subcristata. 



Ser-pophaga subcristata Scl. Oat. B. xiv. p. 102 ; Arg. Orn, 

 i. p. 140. 



fl, A. ^ ? . Los Ynglases, Aj6. Sept. 10-18, 1908. 

 c,rf.^ young. „ „ Jan. 2, Mar. 10, 1909. 



e. ? ad. „ „ Mav 4, 1909. 



