Museums of the United States. 319 



are sometimes of a rather lighter, more bronzy hue than 

 typical birds; but this coloration does not appear to be 

 constant, as we possess some which are intermediate in this 

 character. The Peruvian bird agrees with that from the pro- 

 vince of Antioquia, 



Anas erythrophthalmus, Max. Beitr. iv. p. 929. 



The position of this species has long been in doubt. The 

 single skin in the Wied collection appears to be that of a female ; 

 and the species is very closely allied to, if not identical with, 

 Metopiana peposaca. Unfortunately, I could not find in the 

 collection a specimen of that species with which to compare it. 

 From measurements I took it would appear to be somewhat 

 smaller than M. peposaca ; and the underparts have a rusty 

 brownish tinge instead of being white. The face, too, is 

 whitish, a character not shown in the other species. Long, 

 tot. 19'5, alse 8-0, caudae 2*0, tarsi 1*6, dig. med. 2*3. 



Tringa canutus. 



In our "Notes on the Range of several American Limicolse" 

 (P. Z. S. 1873, p. 456), Mr. Sclater and I stated that we had 

 never seen examples of Tringa canutus from the eastern coasts 

 of South America. Having now seen the bird called T. cinerea 

 by Max. (Beitr. iv. p. 735), I find that it is undoubtedly a 

 young specimen of the Knot [T. canutus). It was obtained 

 in Brazil by Prince Maximilian. 



Sterna erythrorhyncha. Max. Beitr. iv. p. 857. 



This is undoubtedly the same as the bird we referred to S. 

 maxima, Bodd. (P. Z. S. 1871, p. 567) ; and should any one 

 share Dr. Coues^s lingering doubts as to our identification, 

 Maximilian^s name, proposed in 1832, must take precedence 

 over S. regia, of Gambel, published in 1848. 



Sterna superciliaris. 



S. argentea, Max. Beitr. iv. p. 871. 



The Tera, from Brazil, in the Maximilian collection, called 

 Sterna argentea, has a black tip to the bill, and therefore 

 differs in this respect from the usual South- American bird, 

 to which we have assigned Vieillot^s name S. superciliaris. 

 I am now disposed to doubt the possibility of distinguishing 



