470 Mr. R Withington on the 



+ 61. Falco peregrinus, Linn. 



Very uncommon. For several years a pair of these birds 

 frequented the district, and were g-enerally seen perched on 

 a dead willow tree. They were very shy, and it was only 

 after continually hunting after them that on the 24th of 

 November, 1886, I finally succeeded in obtaining one of 

 them, an adult female. Their flight is rapid and powerful, 

 the food small birds. 



[The specimen is a typical F. peregrinus, and not one of 

 the dark southern form [F. cassini) usually met with in 

 South America, — P. L. S.] 



~p62. Hypotriorchis femoralis (Temm,). 

 [A single example. — P. L. S.] 



-)- 63. TlNNUNCULUS CINNAMOMINUS (Sw.). 



Plentiful. I have never known it nest here. 



■f. 64. Rostrhamus sociabilis (Vieill.). 

 [One example. — P. L. S J 



-f-65. Elanus leucurus (Vieill.). 



Fairly plentiful. I have twice taken the nest of this bird, 

 and on other occasions found unfinished ones. All these 

 nests were placed in small isolated tala-trees, and I may 

 mention that I never saw the nest built in a hedgerow of any 

 sort. One of the nests contained four eggs, the other, if I 

 remember rightly, three, 



-\-QQ. MiLVAGO CHIMANGO (Vicill.). 



[One example of this well-known species. — P. L. S.] 



-|-67. Ardea cocoi (Linn.). 



Plentiful. A few are generally seen standing knee-deep 

 in the arroyos. The present specimen was killed with a 

 walking-stick as it flew from the ground after vomiting a 

 large fish which it had just swallowed. The latter measured 

 in length 15 inches, in girth 9^. 



/ 68. Ardetta involucris (Vieill.). 



Plentiful in the reed-covered lagunas, where it breeds. 

 The nest is simply a few pieces of reeds and stalks of grass, 

 placed one on the top of another. It is somewhat triangular 



