550 Bulletin American Museum of Natural History. [Vol. XXXVI, 



(3663) Basileuterus luteoviridis {Bonap.). 

 Myiothlypis Ivieo-viridis Bonap., Consp. Av., II, 1850, p. 311 (Bogotd,). 



Inhabits both the Eastern and Central Andes. Three specimens from 

 Almaguer south of Popayan average somewhat darker above and duller 

 below than three from the Bogota region. 



Generically this and the next species are intermediate between Myio- 

 thlypis (type M. nigrocristatiis) and Basileuterus (type B. auricapillus), but 

 on the whole seem best left in the last-named genus. 



Almaguer, 3; Fomeque, 1; Subia, 1. 



(3663a) Basileuterus richardsoni Chapm. 



Basileuterus richardsoni Chapm., Bull. A. M. N. H., XXXI, 1912, p. 160 (Andes 

 w. of Popayan, alt. 10,340 ft.). 



Char. sp. — Most closely related to Basileuterus luteoviridis (Bp.), but upperparts 

 dark oUve-green instead of bright yellowish olive-green, underparts much paler, 

 superciliary whitish, instead of yellow. 



Inhabits the Temperate Zone of the Western and Central Andes. The 

 occurrence of this species at Laguneta and of B. luteoviridis at Almaguer in 

 the Central Andes indicates that they are not representative species. The 

 Laguneta specimen is in fresh plumage and is decidedly more yellow below 

 than specimens from the type-locality. The supra-loral stripe, however, 

 is but faintly tinged with yellow and would evidently be whitish in worn 

 plumage as it is in six of the seven topotypes, whereas in the Almaguer 

 specimens of luteoviridis it is bright yellow, like the underparts. There is 

 much sexual variation in this species the male having the wing from four to 

 eleven milUmetres longer than in the female. 



Andes w. of Popayan, alt. 10,340 ft., 7; Laguneta, 1. 



(3667) Basileuterus cinereicoUis Scl. 



Basileuterus cinereicoUis Scl. P. Z. S., 1864, p. 166 (Bogota,); Ibid., 1865, p. 

 285, pi. IX, fig. 2. 



Found only in the heavy forests at Buena Vista on the eastern slope of the 

 Eastern Andes where, although not uncommon, it is rather difficult to 

 secure, a fact which probably accounts for its comparative rarity in Bogota 

 collections. Our six specimens doubtless typically represent cinereicoUis 

 described from "Bogota") and show that the Santa Marta representatives 

 of this species which, in the absence of proper material for comparison Dr. 



