278 BROOKLYN INSTITUTE MUSEUM. SCIENCE BULLETIN 2. 6. 



of the chestnut feathers of the immature being scattered among the 

 new black ones of the adult plumage. 



THAMNOPHILUS DOLIATUS DOLIATUS (Linnaeus). 

 Lanius doliatus L., Syst. Nat. ed. 12 I. 1766. p. 138. 



A male and female taken at Ciudad Bolivar, April i4th and April 

 8th, respectively, are referable to typical doliatus. Specimens from 

 Las Barrancas are also referable to the typical form which ordinarily 

 is distinguished at a glance from the common Orinoco form by the 

 general darker color, narrower white and broader black bars in the 

 male and deeper rufous in the female. However, there are occasional 

 specimens from the lower Orinoco and delta regions that are somewhat 

 intermediate in character and can be referred to one or the other only 

 arbitrarily. 



THAMNOPHILUS DOLIATUS FRATERCULUS Berlepsch & Hartert. 

 Thamnophilus doliatus fraterculus Berlepsch & Hartert, p. 70. 



Abundant, both at Ciudad Bolivar and at Caicara. 



Eye straw yellow ; bill black above, plumbeous below ; feet plumbeous. 



The white bars on the under parts are very noticeably wider than 

 in examples of T. doliatus doliatus. making the under parts generally 

 much lighter. A nest containing two young was found June 30. It was 

 located in a clump of open timber, very near a much frequented path. 

 The nest was placed like that of Vireosylva olwacea between the forks 

 near the end of a small branch about one metre from the ground. 

 The bowl of the nest was as large as that of an American Robin. 

 Grass stems and rootlets were the only materials used. 



A nest without eggs taken at Caicara July 4, 1898, by Mrs. Cherrie, 

 was situated in a small -sapling that stood in an open glade of the 

 forest. This nest was about one metre from the ground suspended 

 between the horizontal forks of a slender twig and measured 10 cm. 

 outside diameter by 7 cm. inside; 5.5 cm. in depth outside, by 4 cm. 

 inside. Fine dry grass and long narrow strips of some soft inner bark 

 is employed for the outside while there is an inner lining of horse-hair- 

 like vegetable fibres. The whole is so loosely woven that eggs could 

 be easily seen through the nest walls. 



A second nest containing two young, taken at Caicara by the writer 

 June 21, 1907, was in a region covered with dense thickets, having only 

 a few large trees scattered here and there. The nest was suspended 



