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Show 1870.] MESSRS. SCLATER A N D SALVIN ON THE CRACID.E. 535 Hab. Paraguay (Azara); Rio Parana et R. Vermejo (Page) ; Villa Maria, Upper Paraguay (Natterer). Mus. Vindob., Paris., et Smithsoniano. Obs. Similis O. ruficaudce, sed pileo pallidiore cinereo, gutture variegato, et caudae apicibus latius castaneis distinguenda. W e 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 O. 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 Institution, 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 M M . Castelnau and Deville 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 eeneo-viridis : pileo et uropygio rufis : subtus dilutior, et pectoris plumis albo guttatis: ventre toto pure albo : fulvescente: subalaribus rufis: cauda ceneo-viridi, rectricibus externis castaneo late terminatis: rostro nigricanti-plumbeo, albo, pedibus plumbeis: long, tota 19, alee 7, caudce 8*5, Hab. S.E. Brazil; Bahia (Wucherer) ; Minas Geraes (Burm.). Mus. Brit., Vindob., S.-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 0. araucuan; and Spix perhaps united the two species in his description, though his figure clearly refers to the bird to which we have retained his name. 8. ORTALIDA SQUAMATA. Ortalida squamata, Less. Diet, 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-crneo-viridis: pileo et uropygio rufis: dilutior, ventre griseo, gutturis et pectoris plumis albescente marginatis; hypochondriis et crisso rufescentibus; cauda |