On New Neotropical Birds. 359 



alba. Tectricibus subalaribus et subcaudalibus pallide flavis, 

 tectricibus alarum superioribus mediis et maximis nigris 

 fulvo-albo terminatis, itaque bifasciatis, remigibus primariis 

 olivaceo, secundariis dimidio apicali fulvo-olivaceo extus 

 marginatisi tertiariis late flavescenti-albo marginatis, pogonio 

 interno dimidio basali plus minus ve fulvescenti-albis. Maxilla 

 cornea, mandibula albescente. Av. juv. corpore snbtus 

 albescentiore, abdomine flavescente lavato. 



Al. 56A-54, caud. 46-42A, culm. 8§-7^, tars. 16^-151 mm. 



Observatio : M. a M . poecilocerco Sci. et Salv. dicto, cui forma 

 maxime affinis rectricibus externis concoloribus, nee intus 

 albis, uropygio fnlvo-brunneo, nee sulphureo et colore corporis 

 inferioris flavescentiore distingnendns. 



Habitat : Boliviae orientalis Andes (Cocapata, Yungas). 



Typus : in Mus. H. v. B. : S Cocapata, 13th April 1892. 

 [Gustav Garlepp leg. No. 1530.] 



This new Mecocer cuius, of which Mr. Gustav Garlepp sent 

 me two specimens, both marked males (one adult, the other 

 evidently a young bird), from Cocapata, in the Yungas of 

 Bolivia, opposite to the chain of Cochabamba, is quite dis- 

 tinct from the other known species of that genus. In form 

 it comes nearest to M. poecilocercus Sci. et Salv. of Colombia, 

 Ecuador and Northern Peru, but the inner webs of the 

 outer rectrices, in the new species, are uniform blackish, the 

 white being entirely lacking and it lias quite a different 

 coloration of the under parts of the body, which appear 

 yellowish mixed with white and greenish on the upper breast, 

 instead of being greyish-white on the throat and upper 

 breast and white mixed with yellowish on the abdomen. 

 Further, the rump is of a pale fulvous-brown, somewhat as 

 in Tymnwiscus uropygialis, instead of being pale yellow. I 

 have dedicated this species to my friend Mr. Carl Hellmayr, 

 who has so extensive a knowledge of South American birds, 

 and who agrees with me that it is a new and well-marked 

 form of Mecocer cuius. 



18. Tyranniscus peteesi sp. n. 



T. T. vaissimo (Sci. et Salv.) forsaii maxime affinis sed 

 stria superciliari angustiore flavescente alba (nee pure alba,) 

 capitis lateribus fusco-nigris (nee olivaceis), pectore olivaceo- 



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