18/6.] SPECIES OF BOLIVIAN BIRDS. 355 



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

 fumigati, sed rostro breviore, et quoad colores corpore subtus 

 ferrugineo pritno visu distinguenda. 



Besides the Bolivian 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, /route pileo concolori : alls et cauda fuscis, 

 secundariorum marginibus externis et tectricum major um et 

 minorum apicibus c/are rufis : subtus dilutius cinerea, ventre 

 medio albicantiore, hypochondriis rufescentibus : rostro fusco, 

 subtus ad basin albicante : pedibus nigris : long, tola 4'5, alee 

 2 '4, cuudae 2'0. 



Hab. Tilotilo, prov. Yungas, Bolivia. 



Obs. Species forma et ptilosi O. citrinifrontis, ex iEquatoria, 

 sed fronte non flava et alis rufo bifasciatis distinguenda. 



11. An^eretes flavirostris, sp. nov. 



Supra cineraceo-olivaceus, fronte et lateribus capitis nigro 

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

 terminates : alis nigris, secundariorum et tectricum alarium 

 marginibus latis distincte albis : cauda nigra, rectricis utrinque 

 extimce pogonio externo toto et ceterarum, nisi in mediis, 

 apicibus angustis albis : subtus pallide citrino-Jlavicans, gula 

 et pectore toto albo et nigro confertim flammulato : rostro ad 

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

 tota 4"0, alee 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, which has been hitherto referred to 

 A. parulus. 



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



Supra cinerea unicolor, alis caudaque obscurioribus ; uropygio late 

 castaneo : subtus dilutior, hijpochondriis et ventre imo cum 

 crisso castaneo-rufis : alarum remigibus primariis externis in 

 mare valde acuminatis et extrorsum versis, in femina paulum 

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

 alee 5*5, caudce. 5*6. 

 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* 



