Todd — Studies in the Tyrannida. Zh- 



Subspecific characters. — Similar to Myiohius atricaudus atricaudus Law- 

 rence, but under parts paler and more uniform, with less buffy suffusion 

 on the breast; upper surface also slightly paler. 



Measurements. — Male (four specimens): wing, 60-62 (61); tail, 56-58 

 (57); bill, 10-11 (10.5); tarsus, 18-19 (18.5). Female (three specimens): 

 wing, 55-57 (56); tail, 54-57 (55); bill, 9.5-10 (10); tarsus, 16-16.5 (16). 



Range. — Valley of the Rio Sinu east to the valley of the middle Rio 

 Magdalena, Colombia. 



Remarks. — In the light of the much larger series of true atricaudus 

 examined in this connection the characters originally ascribed to this form 

 assume somewhat less importance. It is in fact a barely recognizable race 

 of atricaudus, differing in its paler, less buffy coloration below, and paler 

 upper parts, in which latter respect it agrees with modestus. It appears to 

 be confined to the northern part of the area occupied by the Cauca-Mag- 

 dalena Fauna in Colombia (as defined by Dr. Chapman), since a specimen 

 from Malena, farther up the Magdalene Valley, is clearly referable to 

 atricaudus. 



Specimens examined. — Colombia: Turbaco, 5; Gamarra, 1; Aguachica,. 

 1. Total, 7. 



Myiohius atricaudus atricaudus Lawrence. 



Myiohius barbatus (not Muscicapa barbata Gmelin) Sclater, Proc. ZooL 

 Soc. London, 1860, 282 (Babahoyo, Ecuador), 295 (Esmeraldas, Ecua- 

 dor).— Lawrence, Ann. Lye. Nat. Hist. N. Y., VII. 1861, 328 (Panama 

 Railway, Panama). — Sclater, Cat. Am. Birds, 1862, 225, excl. refer- 

 ences part (Esmeraldas and Babahoyo, Ecuador). — Taczanowski, Proc. 

 Zool. Soc. London, 1877, 332 (Palmal, Ecuador). — Sclater and Salvin, 

 Proc. Zool. Soc. London, 1879, 514 (Santa Elena, Antioquia, Colombia; 

 crit.). — Heine and Reichenow, Nom. Mus. Heineani Orn., 1883, 144 

 (Babahoyo, Ecuador). — Taczanowski and von Berlepsch, Proc. Zool. 

 Soc. London, 1885, 118 (Babahoyo and Esmeraldas, Ecuador, ex Sclater)^ 

 — Salvin and Godman, Biol. Centr.-Am., Aves, II, 1889, 56, part Costa 

 Rica and Panama references and localities; crit.). — Underwood, Avi- 

 fauna Costarriquena, 1899, 7 (Costa Rica). — Salvadori and Festa, 

 Bol. Mus. Zool. ed Anat. Comp. Torino, XIV, No. 362, 1899, 10 ("For- 

 este del Rio Peripa, " Ecuador; Ecuadorean references). — Gceldi, 

 Bol. Mus. Paraense, III, 1902, 292 (Sarayacu, Ecuador, ex Sclater). 



Myiobius atricaudus Lawrence, Jbis, 1863, 183 (Panama; orig. descr.; 

 types now in coll. Am. Mus. Nat. Hist.). — Lawrence, Ann. Lye. Nat. 

 Hist. N. Y., VIII, 1863, 8 (Panama Railway, Panama; crit.). — Sclater 

 and Salvin, Proc. Zool. Soc. London, 1864, 360 ([Lion Hill?], Panama; 

 crit.). — Salvin, Proc. Zool. Soc. London, 1870, 198 (Calovevora, 

 Panama). — Giebel, Thes. Orn,, II, 1875, 663 (ref. orig. descr.; range). 

 — Sclater and Salvin, Proc. Zool. Soc. London, 1879, 514 (crit.). — 

 RiDGWAY, Proc. U. S. Nat. Mus., V, 1882, 396, note ("La Palma," 

 Costa Rica, and Panama; crit.). — Nutting, Proc. U. S. Nat. Mus., V, 

 1882, 396 ("La Palma," Costa Rica) .— Zeledon, Proc. U. S. Nat. Mus., 

 VIII, 1885, 108 (Costa Rica).— Zeledon, An. Mus. Nac. Costa Rica,, 



