^^76.} SPECIES OF BOLIVIAN BIRDS. 357 



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

 increase m 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 comnarativelv 

 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 

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



13. Grallaria erythrotis, sp. nov. 



Supra obscure oUvacea, cinereo tincta : subtus valde dilutior et 

 riifescente lavata, ventre medio pane albo : regione auriculari 

 mvide rufa, fronte et superciliis hoc colore tinctis: rostro 

 niffro, ad apicem albica?ite, pedibus dare corylinis : long, iota 

 6-0, alee .3-5, caudce 2-0, tarsi 2-0. 



Hab. Tilotilo, prov. Yungas, Bohvia. 



Obs. Species forma et statura omnino 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 

 cmereus, pectore toto et ventre medio albo et nigro confertim 

 transfasciatis : cauda nigra, rectricum pogoinis internis albo 

 transfasciatis : subalaribus et remigmn marginibtis internis 

 ochraceis: rostro corneo, pedibus nigris : long, tota 5-5, alee 

 2'7, caudce 2'6. 



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

 ocnraceo-ru/escens unicolor, 



Hab. Tilotilo, prov. Yungas, Bolivia. 



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

 latioribus et crebrioribus, rostro fortiore et colore feminse diversa. 



15. Asturina saturata, sp. nov. 



Supra fusca, dorsi plumis et scapularibus intus pallidiore fusco 

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

 colori, albido vix striato : subtus pracipue in pectore saturate 

 rufa, abdomine toto et tibiis pallido ferrugineo transfasciatis : 

 crisso fulvo, fere unicolori: remigibus 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 angustis alteris not at a : rostro nigro, cera et 

 pedibus flavis : long, tota IS'O, alee 10-0, caudee 7-0, rostri a 

 rictu 1-25, tarsi 2-55. 

 Hab. Apollo et Tilotilo, Bolivia. 



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

 caudse pallidis distincte ferrugineis diversa. 



* XeijO, 7nanus, et kuWos, cnrvus. 



