Todd — Studies in the Tyrannidce. 33 



Proc. Zool. Soc. London, 1882, 21 (Huambo, Peru). — Taczanowski, 

 Orn. Perou, II, 1884, 299 (Amable-Maria and Huambo, Peru; descr.; 

 references; habits).— Sclater, Cat. Birds Brit. Mus., XIV, 1888, 201, 

 part (TilotUo, Yungas, Bolivia). — Sharpe, Hand-List Birds, III, 1901, 

 131, part (range). — von Berlepsch and Stolzmann, Proc. Zool. Soc. 

 London, 1902, ii, 58 (Amable-Maria, Peru). — Gceldi, Bol. Mus. Para- 

 ense. III, 1902, 292, part (Yungas, Bolivia, ex Sclater). — von Berlepsch 

 and Stolzman, Ornis, XIII, 1906, 113 (Rio Cadena, Peru). — Brabourne 

 and Chubb, Birds S. Am., I, 1912, 296, part (Peru and Bolivia, in 

 range).— Chapman, Bull. Am. Mus. Nat. Hist., XXXVI, 1917, 465, 

 part (Inca Mine, Peru). — Bangs and Noble, Auk, XXXV, 1918, 455 

 (Perico, Peru). 



Myiobius xanthopygius (not Platyrhynchus xanthopygus Spix) Taczanow- 

 ski, Proc. Zool. Soc. London, 1874, 537 (Amable-Maria, Peru). 



Myiobius sulphureipygia var. villosa Dubois, Syn. Avium, I, 1902, 245, 

 part (references; range). 



Myiobius xanthopygus villosus Ridgway, Bull. U. S. Nat. Mus., No. 50, 

 IV, 1907, 488, part (references). 



Type, No. 132,749, Collection American Museum of Natural History, 

 adult male; Rio Tavara (1600 feet), Peru, June 9, 1915; H. and C. Watkins. 



Subspecific characters. — Similar in general to Myiobius villosus villosus 

 Sclater of Ecuador and Colombia, but conspicuously duller and paler 

 throughout, the upper parts not quite so green, and the rump paler, more 

 baryta yellow; under parts much duller, nearer old gold than orange citrine, 

 with the median yellow very pale, near napthalene yellow. 



Measurements. — Male (three specimens): wing, 68-71 (70); taU, 60-63 

 (62); bill, 11-12 (11.5); tarsus, 18-19 (18.5). Female (one specimen): 

 wing, 67; tail, 58; bill, 12; tarsus, 18. 



Range. — Andes of Peru and Bolivia (south at least to Yungas), in the 

 Subtropical Zone. 



Remarks. — This form differs from true villosus in the same way, and to 

 an even greater detree, as does true sulphureipygius from its southern 

 race aureatus. According to Stolzmann it has not been found below 3700 

 feet, but the specimen selected as type is marked as having been collected 

 at 1600 feet, which, if correct, would indicate that the bird descends to a 

 lower altitude than do most Subtropical Zone forms. Buckley secured it 

 in the province of Yungas in Bohvia, but all the other published records 

 are for Peru. Where it meets the range of the typical form we are unable 

 to state; perhaps some of the Ecuador references may pertain here also. 



Specimens examined. — Peru: Inca Mine, 1; Perico, 1; Rio Tavara 

 (1600 feet), 1; Santo Domingo, 1. Total, 4. 



Myiobius atricaudus modestus Todd. 



Myiobius barbatus atricaudus (not Myiobius atricaudus Lawrence) von 

 Berlepsch and Hartert, Nov. Zool., IX, 1902, 49, excl. extralimital 

 references (Caicara, Venezuela; crit.). 



