1917.] Chapman, Distribution of Bird-life in Colombia. 367 



Thamnophilus nmmus Cass., Proc. Acad. N. S. Phila., 1860, p. 188 (R. Truando); 

 ScL. & Salv., p. Z. S., 1879, p. 524 (NecM). 



Thamnophilus ncevius atrinucha Hellm., P. Z. S., 1911, p. 1158 (San Joaquim; 

 Noanamd; N6vita). 



Common throughout the greater part of the Tropical Zone but not 

 taken by us in the Cauca Valley. Specimens from the Pacific coast region 

 are typical; those from La Frijolera show a slight approach toward the 

 Magdalena Valley form which agrees with true atrinucha in size, but has 

 the underparts in the male paler than in either atrinucha or punctata. The 

 upperparts average less' black than in atrinucha, while the female is inter- 

 mediate in color; those from the central Magdalena (Honda, etc.) being 

 nearer atrinucha, while two from the Santa Marta region approach punc- 

 tata in their more rufescent back and more rufous cap. A third Santa 

 Marta female agrees with atrinucha. 



It is probable that on the basis of the characters shown by the male 

 which, it will be observed is paler below than either of the races it stands 

 between, the Magdalena Valley bird is separable, but I do not consider it 

 advisable to name it without a more thorough examination of the entire 

 group than my material permits of. This is doubtless the form which 

 Hellmayr (Abh. Bayer. Akad. Wiss., XXII, 1906, p. 659) provisionally 

 refers to albiventris Tacz. of north Peru. It does not seem probable, how- 

 ever, that birds from the Magdalena Valley and Peru are identical, while 

 the form occupying the east Bogota region, as shown above, is referable 

 to punctata. 



Alto Bonito, 2; Dabeiba, 6; Bagado, 3; Baudo, 2; Novita, 3; Novita 

 Trail (3000 ft.), 1; Juntas de Tamana, 1; Noanama, 1; San Jos^, 1; Bar- 

 bacoas, 7; La Frijolera, 15; Malena, 1; Honda, 4; Chicoral, 1. 



(1903) Thamnophilus canadensis pulchellus {Cab. ds Hein.). 



Hypolophus pulchellus Cab. & Hein., Mus. Hein., II, 1859, p. 16 (Cartagena). 

 Thamnophilus pulchellus Allen, Bull. A. M. N. H., XIII, 1900, p. 161 (Bonda; 

 Cienaga; Santa Marta). 



This bird is apparently restricted to the Caribbsean coastal zone. 

 Turbaco (near Cartagena), 3; La Playa, 7; Calamar, 3; Algodonal, 2. 



(1908) Thamnophilus doliatus doliatus (Linn.). 



Lanius doliatus Linn., Syst. Nat., I, 1766, p. 136 (Guiana). 



Found orily in the Tropical Zone at the eastern base of the Eastern 

 Andes. Four males average darker and have less white in the crest than 



