19 1 8- J Cape San Antonio, Buenos Ayres. 403 



150. Cyanotis azarae (Nauni.). Many-coloured Tyrant. 



Iris delicate pale blue; bill and feet black. 



There is little further to add to my previous notes and 

 those of Mr. Hudson on this species, to which the name of 

 Tyrant seems so misapplied, in view of its miniature beauty, 

 tameness, and sweet clear call. 



As stated by Mr. Hudson, it is only occasionally seen 

 during the winter months, the majority having migrated. 

 A drought does not necessarily drive it away; for example, 

 the autumn of 190.2 found all our swamps completely dry,' 

 notwithstanding which, I continued to observe as many as 

 seven or eight in one locality towards the end of March. 

 On the other hand, when the great flood of 1913 took place^ 

 I did not see a single specimen on my journey from Buenos 

 Ayres to Ajo at the end of September. Nor in any of the 

 Yngleses swamps until 10 October, when, boating- in the 

 deepest localities, a great many were seen (generally pairs) ; 

 rarely was it observed subsequently; and at the end of 

 summer (30 March) I record the curious fact that during 

 all the season only an occasional one was seen. " Cei-^ 

 tainly not for want of water on the estancia/' is my rueful 

 comment. 



The following are the measurements of a very neat nest :— 

 Outside, 2 in. (50 mm.) wide by the same in depth ; inside, 

 If in. (41 mm.) wide by the same in depth. Which shows' 

 the delicate compactn(ss of the moulded walls and the fine- 

 ness of the vegetable strips constituting the lining. It ^as 

 attached to one single slender " Durasnillo.'' 



Cyanotis azarm is a late nester, from the end of November 

 to the beginning of January. The eggs never exceed two in 

 number, and are of a pale cream-colour, which darkens to- 

 ward the blunt end and occasionally merges into a faint 

 brownish ring there. They measure 1 7 x 13 mm. 



152. Elainea albiceps (d'Orb. ct Lafr.). White-crested 

 Tyrant. 



The only recorded occurrence is that of an adult male 

 obtained by Mr. Grant on 18 January, 1909. There is 



