AVES MOTACILLID^. 829 



peculiar singing-habits. In October it was in full song; mounting in the 

 air in true Pipit fashion, it descended to the ground in a slanting direc- 

 tion, and either settled or mounted again when within a foot or so of it ; 

 in descent it sang a rapid trilling strain — 'die, eke, che, weeeee!' — the latter 

 part of the song a long-drawn strained note. When on the ground or on 

 a fence, it would sometimes sing a shrill short song, falling in tone — 

 ' schiiiii-e/teeeee /' But in mid-November these songs were heard much 

 less frequently, and as I rode over the camp I used to hear a song, the 

 whereabouts of which I could not make out at first : ' aweeee-titiweetee' over 

 and over again. At last I traced it to a little bird hovering and flying 

 about in an irregular way high up in the dazzling sky. The wings were 

 flapping quickly and then motionless for a few seconds. The song came 

 down from several birds at once, a little distance apart, very sweetly; but 

 it was blinding work to watch the birds for long. By February ist they 

 were in full moult. On the loth April I noted that they had been very 

 noisy lately, flying about singly and in little flocks — the call-note then 

 being 'tchick.' The next day I heard one sing, the weather being very 

 pleasant, like a second spring in fact. I am inclined to think they became 

 less numerous towards the end of autumn." (Ibis, pp. 163-164, 1894.) 



Anthus correndera chilensis (Less.). 



Corydalla chilensis Lesson, Discr. Mamm. et Ois. p. 298 (1838). 



Description. — Adult, 147335 U. S. Nat. Museum Colin. Chili, 1872, 

 Reed. Total length, 5.80 inches; wing, 2.90; culmen, .46; tail, 2.25; 

 tarsus, .90. This form differs but slightly from the preceding, being 

 more richly colored throughout ; the upper parts are suffused with a rich 

 brownish yellow tint and the breast is deeper yellowish buff. An extremely 

 worn specimen from Santiago is duller than any A. c. correndera I have 

 seen, with under parts white except for a slight buff tint on the breast and 

 upper parts dull brown with buffy white edgings. In this condition the 

 two races must be indistinguishable and I am not sure but that compa- 

 rable series at other times will show that there is no tangible difference 

 between them. Sexes alike. 



Geographical Range. — Southern Bolivia and Chili. 



Not seen by the Princeton Expedition. 



