1876.] SPECIES OF BOLIVIAN BIRDS. 357 



female, the structure is much more normal. The primaries gradually 

 increase in length from the first to the fifth, sixth, and seventh, 

 which are nearly equal and longest. They have but a slight outward 

 curvature at the extremities ; and the inner webs are comparatively 

 but slightly reduced. 



In L. fusco-cinerea, which in general size and structure comes 

 nearest to the present bird, the primaries are normal throughout, and 

 show none of these peculiarities. 



This singular wing- structure is worthy of at least a subgeneric 

 distinction ; and we suggest the term Chirocylla* as indicative of it. 



13. Grallaria erythrotis, sp. nov. 



Supra obscure olivacea, cinereo tincta : subtus valde dilutior et 

 rufescente lavata, ventre medio pane albo : reyione auriculari 

 vivide rufa, front e et superciliis hoc colore tinctis: rostro 

 nigro, ad apicem albicante, pedibus dare corylinis : long, tola 

 60, alee 3*5, caudce 2'0, tarsi 2*0. 



Hab. Tilotilo, prov. Yungas, Bolivia. 



Obs. Species forma et statura omuino G. monticolce, sed regione 

 auriculari rufa distinguenda. 



J 4. Thamnophilus subfasciatus, sp. nov. (Plate XXXIII.) 



Supra cinereus olivaceo tinctus, pileo et alis extus rufis : subtus 

 cinereus, pectore toto et ventre medio albo et nigro confertim 

 transfasciatis : cauda nigra, rectricum poyoniis internis albo 

 transfasciatis : subalaribus et remigum marginibus internis 

 ochraceis : rostro corneo, pedibus nigris: long, tota 55, alee 

 2*7, caudcB 2*6. 



Fem. Rufescenti-cinerea, pileo, alis extus et cauda rufis : subtus 

 ochraceo-rufescens unicolor. 



Hab. Tilotilo, prov. Yungas, Bolivia. 



Obs. Sp. Th. aryentino maxime affinis, sed fasciis pectoris nigris 

 latioribus et crebrioribus, rostro fortiore et colore feminse diversa. 



15. ASTURINA SATURATA, Sp. UOV. 



SujJra fusca, dorsi plumis et scapidaribus intus pallidiore fusco 

 vel ferrugineo transfasciatis : capite toto fusco-nigro, yula con- 

 colori, albido vix striato : subtus prcecipue in pectore saturate 

 rufa, abdomine toto et tibiis pallido ferruyineo transfasciatis : 

 crisso fulvo, fere unicolori: remiyibus primariis rufis, nigro 

 transfasciatis, intus in pogonio interiore fulvescenti-albis, 

 apicibus fusco-nigris : cauda rufescenti-fusca, subtus dilutiore 

 nigro trivittata ; rectrice una utrinque extima basin versus 

 fasciis duabus anyustis alteris notata : rostro niyro, cera et 

 pedibus f avis : lony. tota 15"0, alee 10*0, caudce 7'0, rostri a 

 rictu T25, tarsi 2"55. 

 Bab. Apollo et Tilotilo, Bolivia. 



Obs. A. nattereri forsan proxima, sed capite nigrescentiore et fasciis 

 eaudse pallidis distincte ferrugineis diversa. 



* \rip. manus, pt kvXXos, curvus. 



