174 



CHAEADEIUS. 



Variations 

 due to age, 

 sex, and 

 season. 



Geographi- 

 cal distribu- 

 tion- 



variations, but young in first plumage have little or no black above the white forehead, and 

 the pectoral band is brown and interrupted in the middle. 



It is one of the smallest species in the genus, the length of wing from carpal joint 

 varying from 4-2 to 3-6 inch. It is a miniature of C. wilsoni, and is a resident in the 

 tropical portions of Central and South America. 



I have examples from Peru, and Fraser found it in Ecuador (Sclater, Proc. Zool. Soc. 

 1860, p. 290). I have examples from Colombia and Venezuela. In Brazil it is found 

 throughout the coast ; Wallace found it at the mouth of the Amazon (Sclater & Salvin, 

 Proc. Zool. Soc. 1867, p. 591) ; and I have examples from Bahia, Rio Grande, and Eio 

 de la Plata. Salvin obtained an example from Guatemala (Ibis, 1866, p. 196), but it is 

 not known to have occurred in Chili (Sclater, Proc. Zool. Soc. 1867, p. 331). 



It appears to be an inland species ; Bartlett found it breeding on the sandy banks of 

 some of the tributaries of the Amazon in Eastern Peru (Proc. Zool. Soc. 1873, p. 309) ; 

 and Durnford met with it in the extreme north-west of the Argentine Republic (Ibis, 1880, 

 p. 424), and on dry sandy ground in the province of Buenos Ayres (Ibis, 1878, p. 67). 

 These two localities represent, so far as is known, the southern limit of its range, which 

 appears to extend seven hundred miles further south on the Atlantic than on the Pacific 

 coasts, a boundary of distribution corresponding almost exactly with the isothermal lines 

 for January, which is probably the breeding-season. 



CHARADRIUS OCCIDENTAL IS. 



CABANIS'S SAND-PL OVER. 

 Diagnoais. Charadrius, subgen. ^gialopUli minores, pedibus nigris : loris albis. 



Variations. No local races of this species are known. 



