208 Proceedings of the Biological Society of Washington. 



washed with olive on the breast and sides of the neck), and in a more or less 

 "streaky" fashion into baryta yellow on the rest of the under parts and 

 the under wing-coverts; "iris brown; bill and feet black. " 



Measurements.— Male: wing, 89-95 (average, 92); tail, 86-93 (90); bill, 

 17-20.5 (19); tarsus, 20.5-23 (22). Female (five specimens): wing, 

 84-92 (86); tail, 80-90 (83.5); bill, 18-19 (18.5); tarsus, 20-23 (22). 



Range. — -Arid Tropical Zone of the upper Magdalena and upper Cauca 

 Valleys in Colombia, reaching the valley of the upper Rio Dagua at Caldas. 



Remarks. — This is a very distinct form, readily recognized by the pale 

 tips of the rectrices. It was described in 1881 by Sclater and Salvin from 

 "Bogotd" skins in the former's collection, but is still very imperfectly 

 known. As shown by the researches of Messrs. Chapman and Carriker in 

 recent years, it appears to be confined to the arid portion of the inter- 

 Andean Tropical Zone in Colombia, occupying the upper part of the valleys 

 of the Magdalena and Cauca Rivers. From here it has crossed over the 

 Western Andes to the valley of the Rio Dagua, in common with several 

 other species of similar range. Nothing is on record concerning its haunts 

 and habits. 



Specimens examined. — Colombia: Caldas, 2; Heights of Caldas, 1; 

 Espinal, 1; Bitaco Valley, 2; Pavas, 3; Yumbo, 12; Cali, 2; San Antonio, 3; 

 Las Lomitas, 1; El Consuelo, 1; Chicoral, 1; Honda, 2; "Bogotd, " 1; La 

 Maria, 4; Jimenez, 1. Total, 37. 



Myiarchus phaeocephalus Sclater. 



Myiarchus phceocephalus Sclater, Froc. Zool. Soc. London, 1860, 281 

 (Babahoyo, Ecuador; orig. descr.; type now in coll. Brit. Mus.). — 

 Sclater, Cat. Am. Birds, 1862, 233 (Babahoyo, Ecuador). — Lawrence, 

 Ann. Lye. Nat. Hist. N. Y., IX, 1869, 237 (Puna Island, Ecuador).— 

 CouES, Proc. Acad. Nat. Sci. Philadelphia, 1872, 73 (Puna Island, 

 Ecuador; descr.; crit.). — Sclater and Salvin, Nom. Avium Neotrop., 

 1873, 52 (in list of species; range).— Giebel, Thes. Orn., II, 1875, 661 

 (references). — Taczanowski, Proc. Zool. Soc. London, 1877, 326 

 (Lechugal, Peru). — von Berlepsch and Taczanowski, Proc. Zool. 

 Soc. London, 1883, 559 (Guayaquil, Ecuador). — Taczanowski, Orn. 

 P6rou, II, 1884, 323 (Lechugal and Tumbez, Peru; descr.; habits). — von 

 Berlepsch and Taczanowski, Proc. Zool. Soc. London, 1885, 93 

 (Yaguachi, Ecuador), 122 (local range). — Sclater, Cat. Birds Brit. Mus., 

 XIV, 1888, 255 (Babahoyo, Santa Rita, and Balzar Mountains, Ecuador; 

 descr.; references). — Salvadori and Festa, Bol. Mus. Zool. ed Anat. 

 Comp. Torino, XIV, No. 362, 1899, 13 (Vinces and Balzar, Ecuador; 

 Ecuadorean references; crit.). — Sharpe, Hand-List Birds, III, 1901, 146 

 (in list of species; range). — Dubois, Syn. Avium, I, 1902, 251 (references; 

 range).— von Berlepsch, Ornis, XIV, 1907, 477 (in list of species). — 

 Brabourne and Chubb, Birds S. Am., I, 1912, 303 (ref. orig. descr.; 

 range).— Chapman, Bull. Am. Mus. Nat. Hist., XXXVI, 1917, 476, in 

 text (western Ecuador; crit.). 



Pyrocephalus phceocephalus Gray, Hand-List Birds, I, 1869, 363 (in list of 

 species; range). 



