1870.| MESSRS. SCLATER AND SALVIN ON THE CRACIDZ. 537 
pallide grisescenti-viridi, hypochondriis et crisso rufescentibus : 
cauda eneo-viridi, rectricibus externis pro majore parte castaneis: 
rostro plumbeo apice albicante, pedibus corylinis: long. tota 25, 
ale 8°5, caude 9°5, tarsi 2°5. 
Hab. Upper Amazon (Spir); Bogotd (Mus. S.-G.) ; Rio Napo 
(Verreaux) ; wood-region of Eastern Peru (Tschudi); Cosnipata 
valley (Whitely) ; Bolivia (Bridges in Mus. Brit.); Mato Grosso 
and Rio Madeira (Natterer). 
Mus. Brit., Vindob., Smithson., et S.-G. 
We have a typical example of Tschudi’s Ortalida adspersa, re- 
ceived in exchange from Neuchatel, and have seen a second (from 
the same source) in the Smithsonian collection. We regard them 
as clearly referable to Spix’s O. guttata. We have also before us 
one of the Nattererian skins called O. albiventris by v. Pelzeln, 
which is certainly the same bird. 
The range of this Guan is therefore widely extended throughout 
Upper Amazonia from Mato Grosso to the slopes of the Andes of 
New Granada, where it comes within the grasp of the Bogota bird- 
hunters. 
11. ORTALIDA SUPERCILIARIS. 
Ortalida superciliaris, G. R. Gray, List of Gall. p. 10. 
Aineo-viridis, fronte et superciliis albescentibus ; subtus magis brun- 
nescenti-olivacea, cervicis et pectoris plumis albo marginatis: abdo- 
mine grisescente, hypochondriis et crisso rufescentibus: long. tota 
16°9, ale 7, tarsi 1°9. 
Hab. South America. 
Mus. Brit., Derbiano. 
The typical specimen of this bird, now in the British Museum, 
died in this Society’s Gardens, and its locality is unknown. There 
is a specimen in the Derby Museum which we consider referable to 
the same species. It was purchased from Mr. Gould in 1846. 
This is a small species, of about the same size as O. araucuan, but 
distinguishable from that bird by its white eyebrows and spotted 
breast. We have some little suspicion that it may be a dwarfed 
variety of O. guttata. 
12. OrRTALIDA POLIOCEPHALA. 
Penelope poliocephala, Wagl. Isis, 1830, p. 1112. 
Ortalida poliocephala, Wagl. Isis, 1832, p. 1227; Scl. & Salv. 
P. Z. S. 1869, p. 364. 
Fuscescenti-olivacea, capite plumbeo: subtus dilutior, gule plumis 
obscurioribus sed griseo notatis: ventre medio lactescenti-albo, 
hypochondriis et crisso ferrugineo perfusis: cauda @neo-viridi, 
rectricibus quinque lateralibus cervino late terminatis: long. tota 
24, ale 10°5, caude 11°5, tarsi 3°2. 
Hab. Tableland of Mexico, Real Arriba and State of Vera Cruz 
(Deppe) ; vicinity of the city of Mexico (le Strange) ; Rio Armeria 
and Rio Tupila (Xantus). 
