1876.] SPECIES OF BOLIVIAN BIRDS. 355 



media, cum illo melius congruere videtur : habitus fere sicut O. 

 fumigati, sed vostro breviere, et quoad colores corpore subtus 

 ferrugineo primo visu distingueuda. 



Besides the Bohviau example, we have a specimen of this same 

 species obtained by Mr. Whitely, at Paucartambo, in Peru, in January 

 1874. 



10. OCHTHCECA PULCHELLA, Sp. nOV. 



Supra cinerea, dorso postico rufescente : loris et superciliis angustis 

 citrino-Jlavis, fronte pileo concolori : alis et cauda fuscis, 

 secundariorum marginibus externis et tectricum niajorum et 

 minorum apicibus dare rufis : subtus dilutlus cinerea, ventre 

 medio albicantiore, hypochondriis rufescentibus : rostro fusco, 

 subtus ad basin albicante : pedibus nigris : long, tota 4'5, al(B 

 2"4, caudae 2"0. 



Ilab. Tilotilo, prov. Yungas, Bolivia. 



Obs. Species forma et ptilosi O. citrinifrontis, ex ^quatoria, 

 sed fronte nou flava et alis rufo bifasciatis distinguenda. 



11. An.5;retes flavirostris, sp. nov. 



Supra cineraceo-olivaceus, fronte et latenbus capitis nigro 

 striolatis,pilei plumis ad basin albis, crista tenui elongata nigra 

 terminatis : alis nigris, secundariorum et tectricum alariura 

 marginibus latis distincte albis : cauda nigra, rectricis utrinque 

 extimm pogonio externa toto et ceterarum, nisi in mediis, 

 apicibus angustis albis : subtus pallide citrino-Jlamcans, gula 

 et pectore toto albo et nigro confertim flammulato : rostro ad 

 basin aurantiaco, ad apicem nigricante : pedibus nigris : long, 

 tota 4 0, alcB '2'1, caudce 2 '2. 

 Hab. Tilotilo, prov. Yungas, Bolivia. 



Obs. Species A. parulo proxima, sed flammulis pectoris latioribus, 

 tectricum fasciis albis distinctis et rostro ad basin aurantiaco diversa. 

 Sclater's collection contains a worn specimen of this species col- 

 lected in Bolivia by Bridges, vyhich has been hitherto referred to 

 A. parulus. 



12. Lathria xjropygialis, sp. nov. (Plate XXXII.) 



Supra cinerea unicolor, alis caudaque obsciwioribus ; uropygio late 

 castaneo : subtus dilutior, hypochondriis et ventre imo cum 

 crisso castaneo-rufis : alarum remigibus priinariis externis in 

 mare valde acuminatis et extrorsiim versis, in femina paulum 

 acuminatis : rostro corneo, pedibus nigris: long, tota 10*5, 

 alee 5 '5, caudce h'^. 

 Hab. Tilotilo, ad alt. 8000 ped., Bolivia. 



Obs. Species remigum forma abnormali insignissima, crassitie et 

 habitu generali L. fuscocinerece prsedita. 



The structure of the wing of this species is of so remarkable a 

 character that it deserves a more lengthened notice. 



As will be seen by the figure, the inner web of the first primary 

 of the male of L. uropygialis begins to be slightly attenuated at 



23* 



