1917.] Chapman, Distribution of Bird-life in Colo7nbia. 453 



paler and may show an approach toward M. b. dilatus Todd (Proc. Biol. 

 Soc. Wash., XXVI, 1913, p. 171) of Venezuela. 



Alto Bonito, 1; Buenaventura, 1;. Puerto Berrio, 1. 



(2927a) Tyrannulus elatus reguloides Ridgw. 



Tyrannulus reguloides Ridgw., Proc. U. S. N. M., X, 1887, p. 521 (Diamantina, 

 near Santarem, Brazil). 



Tyrannulus elatus Scl. & Salt., P. Z. S., 1879, p. 512 (Remedies); Allen, Bull. 

 A. M. N. H., XIII, 1900, p. 148 (Bonda). 



Ranges throughout tropical Colombia inhabiting both extremely humid 

 and arid or semi-arid parts of the Tropical Zone without apparent response 

 in color characters to its widely varying environment. Our specimens 

 agree with two from the lower Amazon, but I have no topotypical speci- 

 mens of true elatus and follow Ridgway in referring Colombian specimens 

 to reguloides; though for distributional reasons I feel that this author's 

 expressed doubt as to the validity of this form is well-founded! A single 

 example from La Morelia in the Caqueta region is slightly duller above 

 and more olivaceous below, and has a smaller bill' than other birds in the 

 series. 



Quibdo, 1; Buenaventura,!; Barbacoas, 4; Puerto Valdi via, 1 ; Cali, 2; 

 Rio Frio, 1; Calamar, 1; Honda, 1; La Morelia, 1. 



(2929) Mecocerculus uropygialis Laicr. 



MecocercuLus uropygialis Lawb., Ann. Lye. Nat. Hist., N. Y., IX, 1870, p. 266 

 (Ecuador). 



A specimen sent by Brother Apolinar from Choaehi in the Temperate 

 Zone east of Bogota agrees with Lawrence's type when due allowance is 

 made for fading in the last-named specimen. 



(2928) Tyranniscus nigricapillus nigricapillus {Lafr.). 



Tyrannulus nigro-capillus Lafb., Rev. ZooL, 1845, p. 341 (Bogotd). 

 Tyranniscus nigricapillus Scl. & Salv., P. Z. S., 1879, p. 512 (Sta. Elena). 



Our specimens are from the Western and Central Andes chiefly from 

 the Temperate Zone. Old 'Bogota' skins have the crown, wings, and tail 

 browner. 



Andes w. of Popayan, 1; Almaguer, 1; Salento, 1; Sta. Elena, 1. 



