52 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 74 



by von Berlepsch, and in the meantime it had received another name, 

 from Cabanis. In 1905, after an examination of the type, Messrs. 

 von Berlepsch and Hellmayr were able to confirm its claims to recog- 

 nition as a race of B. hivittatus. The type specimen in question, now 

 before me through the courtesy of the authorities of the Neuchatel 

 Museum, is in very poor condition — badly mangled and ruflled, with 

 most of the bill gone, and the tail gone (all but one feather) — but 

 clearly belongs to the same form as the series of fresh specimens in 

 the collection of the American Museum of Natural History which 

 have been studied in this connection. In addition I have handled 

 most of the material on which Messrs. von Berlepsch and Ilellmayr's 

 remarks were based. "With specimens of both hivittatus and chry- 

 sogaster coming from the same part of eastern Peru it is at once obvi- 

 ous that their respective ranges overlap at this point, and I can no 

 longer follow these authorities in keeping them conspecific, but 

 would rate them as distinct although closely allied species. Typical 

 B. chrysogaster differs from B. hivittatus in its smaller size, duller 

 olive green wings and tail, darker, more olive greenish sides of the 

 head, and purer, richer yellow under parts. All of the specimens of 

 chrysogaster examined have the coronal spot Mars yellow, while in 

 the majority of those of hivittatus it is purer yellow. 



The only locality mentioned by von Tschudi in connection with his 

 description of this species is San Pedro, near Lurin. Doctor Hell- 

 mayr believes that this is a mistake, and has accordingly proposed to 

 substitute Chanchamayo, in the Department of Junin, as the accepted 

 type locality. The species is a forest-lover, and appears to belong to 

 the Tropical Zone. 



Specimens examined. — Peru: Huaynapata, Marcapata, 1; Amable 

 Maria, 1; Monterico, 2; La Merced, Chanchamayo, 3; Callanga, 

 Cuzco, 1; Lake Titicaca ( probably = Coroico, Bolivia), 1; La Pampa, 

 2; Astillero, 1; Tulumayo (4,000 feet), Junin. 6; unspecified, 1 (the 

 type). Total, 19. 



BASILEUTERUS CHRYSOGASTER CHLOROPHRYS von Berlepsch 



Basileuterus livitlatits cMorophrys von Berlepsch, Ornis, vol. 14, 1907, p. 

 347 ("Quito," Ecuador, orig. descr. ; type now in coll. Frankfort Mus.). — 

 MtixfiGAUx, Mission Service Geog. Mes. Arc. Meridien Equat. Am. du Sud, 

 vol. 9, 1911, p. B 73, excl. syn. (Ayuriquin, Ecuador; crit.). — Chapman, 

 Bull. Amer. Mus. Nat. Hist., vol. 3G, 1917, p. 552 (Buenavista, Nariuo, 

 Colombia). — IIeixmayr, Arch. f. Naturg., vol. 85, A, 1919, p. 7, in text 

 (Paraniba, Cachyjacu, and Lita, Ecuador; range; crit.); Nov. Zool., 

 vol. 32, 1925, p. 181 (ref. orig. descr.; range). 



SuhspecifiG characters. — Similar to Basileuterus chrysogaster chry- 

 sogaster, but upper parts darker, more brownish green (near dark 

 citrine) ; superciliaries duller, more greenish yellow; and under parts 

 also duller vellow. 



