183 
the Province of Buenos Ayres. 
60. Phacellodomus ruber (Vieiil.); Scl. et Salv. 1 . s . c . 
Though I have only seen this bird in the spring, 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 Synallaxinse, 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 
