10 



by M. D'Orbigny is, that the throat and chest of the latter are 

 brownish black, while the same parts in this bird are white. 

 Hah. Santa Cruz. 



BuTEO VAEius. Sul. verticc corporeque supra intense fuscis, plu- 

 misfulvo margiiiatis vel guttatis ; jirimariis secondariisque ci- 

 ?iereis, lineis fuscis frequentibus trunsversim striatis ; caudd ci~ 

 nered, lineis angustis et frequentibus fuscis transvcrsim notatd; 

 si7igulis plumis Jlavescenti albo ad apicem notatis ; giddfuligi- 

 nosd ; ])ectore fulvo lined interruptd nigrescente circumdatd a 

 guld tendente; abdomine imo lateribusque stramineo et rufescenti- 

 fusco variegatis; femoribus crissoque stramineisliiieistransversa- 

 libus anfractis rufescenti-fusco or?uitis ; rostro nigro ; cerd tar- 

 sisque olivaceis. 



Long. tot. 2I5 ; alcE, 16§. 



Obs. The fine individual above described was the only example of 

 the species contained in Mr. Darwin's collection ; and it is evidently 

 in a state of change from youth to maturity. 



Hab. Santa Cruz. 



CiECUS MEGASPiLus. Circ. vertice corporeque supra intense fus- 

 cis, lined stramined a naribus supra oculos ad occiput tendente ; 

 hoc rufescentifusco, primariis intense fuscis ad basin cinereis, 

 lineis nigris cancellatis ; tectricibus caudce albis ; rectricibus in- 

 termediis cinereis externis cinereo-stramineis ; omnibus lineis 

 latis fuscis transversim notatis ; lined ultima latisimd apice sor- 

 dide stramineo ; guld et pcctore stranmieis, fusco sparsis ; cor- 

 pore subtus stramineo ; plumis pectoris et laterum stria centrali 

 fusco notatis ; rostro nigro ; cerd tarsisque jlavis. 



Long. tot. 21 unc. ; rostri, l^ ; ala, 17,- caudce, IQi; tarsi, 3-^. 



BuTEo vENTRALis. But. vcrticc corporcque intense et nitide-fus- 

 cis, plumis dorsalibus purpurescentibus ; primariis nigris ; 

 caudd fused lineis frequentibus obscurioribus, cancellatd ad 

 apicem sordide alba ; guld abdomine tnedio crissoque stramineo 

 albis ; lateribus pectoris corporisque fascidque abdominali nec- 

 non femoribus flavescente-albis fusco notatis, notis in femoribus 

 ntfescentibus ; tarsis per mediam partem antice plumosis, 

 rostro nigro; cerd tarsisque flavis. 



Long. tot. 21^ unc. ; aim, 15^ ; rostri, 9\ ; tarsi, S^. 



/ Otus (Brachyotus) galapagoensis. Ot. fascia circa oculos fu- 



ligiiiosd ; strigd superciliari plumis nares tangentibus et circa 

 angulum oris, guld et disci fascialis margins albis ; vertice cor- 

 poreque supra intense stramineo fuscoque variegatis; primariis 

 intense fuscis ad apicem, stramineo fasciatis ad basin ; corpore 

 subtus stramineo notis irregularibus fasciisque fuscis ornato ; 

 femoribus tarsisque jjluinosis rufescenti-stramineis ; rostro et 

 unguibus Jiigris. 



Long. tot. 13^; rostri, 1 ; alcB, 11 ; caudce, 6; tarsi, 2. 



Obs. This species belongs to that section of the horned owls which 



