the Province of Buenos Ay res. 183 



60. Phacellodomus ruber (Vieiil.) ; Scl. et Salv. /. s. c. 



Though I have only seen this bird in the springs I am in- 

 clined to think that it is at least partially resident. It fre- 

 quents the thick plantations of reeds, '' sauce/^ and " ceiba " 

 trees in the riverain wood, but, from its skulking habits, is not 

 often seen. 



61. Phacellodomus frontalis (Licht.) ; Scl. et Salv. No- 

 mencl. p. 65. 



Like the last species, I have only seen this bird in the 

 spring, with the exception of one example shot in April of 

 this year. It breeds in October; and when sitting, the old 

 bird will allow herself to be taken on the nest. It feeds on 

 minute insects, and seems especially fond of spiders, which 

 abound in the reed-beds and thickets it frequents. In flight 

 it somewhat resembles the Synallaxinae, and altogether, from 

 its habits, would seem to be closely related to the genus Syn- 

 allaxis, I have also met with it in August. Iris orange- 

 yellow ; legs and feet very pale slate ; upper mandible dark 

 horn-colour, lower mandible like legs. 



On the 14th April I shot a bird at Baradero which would 

 seem to be referable to this species, but differs a little from 

 any I have seen. Its underparts are lighter than in any I 

 have examined ; and the edges of the under mandible for three 

 quarters of its length from the base are orange-yellow. 



Belgrano bird, Baradero bird, 



11th April, 1876. 14th April, 1876. 



Total length .... 6-2 5*0 



Beak -6 -4 



Tarsus '7 "7 



Iris orange-yellow. dark wood-brown. 



62. Thamnophilus argentinus. Cab. ; Scl. et Salv. P. Z. S. 

 1868, p. 141. 



Spring and summer visitor, but occasionally seen in the 

 winter. It has an exceedingly loud jarring note, somewhat 

 resembling that of Troglodytes furvus , and for its size makes 

 an almost incredible noise. For some time I could not make 

 out what bird it was I constantly heard in the thickest cover 



o 2 



