1870.] MESSRS. SCLATER AND SALVIN ON THE CRACID&. 535 
Hab. Paraguay (dzara); Rio Parana et R. Vermejo (Page) ; 
Villa Maria, Upper Paraguay (Natterer). 
Mus. Vindob., Paris., et Smithsoniano. 
Obs. Similis O. ruficaude, sed pileo pallidiore cinereo, gutture 
variegato, et caudze apicibus latius castaneis distinguenda. 
We have had some difficulty in finding trustworthy characters 
whereby to distinguish this species, of which Herr von Pelzeln has 
lent us a specimen from the Imperial Cabinet of Vienna, from QO. 
ruficauda of Venezuela. The two birds are very nearly related; but 
so far as we can see the points of distinction pointed out above can 
be relied on. The specimens belonging to the Smithsonian Insti- 
tution, which have also been forwarded to us for comparison, and 
which were collected on the banks of the rivers Parana and Vermejo 
by Capt. Page, are decidedly smaller in all their dimensions than 
the Nattererian example, but do not otherwise differ. 
Sclater has examined two skins in the Paris Museum apparently 
of this species. One of these, collected by D’Orbigny, has no locality 
attached to it; the other was obtained by MM. Castelnau and De- 
ville on the Rio Paraguay. 
7. ORTALIDA ALBIVENTRIS. 
Penelope albiventris, Wagl. Isis, 1830, p. 1111. 
Ortalida albiventris, Wagl. Isis, 1832, p. 1227; G. R. Gray, List 
of Gall. p. 12. 
Ortalida araucuan, Pelzeln, Orn. Bras. p. 285. 
Penelope araucuan, Max, Beitr. iv. p. 549; Burm. Syst. Ueb. iii. 
p- 340. 
Supra @neo-viridis : pileo et uropygio rufis : subtus dilutior, gutturis 
et pectoris plumis albo guttatis: ventre toto pure albo: crisso 
Sulvescente: subalaribus rufis: cauda eneo-viridi, rectricibus tribus 
externis castaneo late terminatis : rostro nigricanti-plumbeo, apice 
albo, pedibus plumbeis : long. tota 19, ale 7, caud@é 8'5, tarsi 2°3. 
Hab. 8.K. Brazil; Bahia (Wucherer) ; Minas Geraés (Burm.). 
Mus. Brit., Vindob., 8.-G. 
This species seems to be confined to the vicinity of Bahia and the 
adjoining parts of Minas. Pr. Max. tells us it is not found south 
of the Rio Doce. It is easily distinguished by its pure white belly, 
and red head and lower back. Pr. Max. and Burmeister have called 
it O. araucuan; and Spix perhaps united the two species in his de- 
scription, though his figure clearly refers to the bird to which we 
have retained his name. 
8. ORTALIDA SQUAMATA. 
Ortalida squamata, Less. Dict. des Sc. Nat. lix. p. 195; Trait. 
d’Orn. p. 481; Compl. de Buff. p. 443; G. R. Gray, List of Gall. 
p- 10. 
Supra brunnescenti-e@neo-viridis : pileo et uropygio rufis: subtus 
dilutior, ventre griseo, gutturis et pectoris plumis albescente stricte 
marginatis ; hypochondriis et crisso rufescentibus ; cauda eneo- 
