Formerly abundant on most of the islands in the Seychelles, especially Mahé, but now confined to the little islet of Silhouette, where it will in all probability become extinct. According to E. Newton its name was "Cateau vert." Habitat: Seychelles Islands. {67} PALAEORNIS EQUES (BODD). _Psittaca borbonica torquata_ Briss., Orn. IV p. 328, pl. XXVII f. 1 (1760). (Bourbon.) _Psittacus alexandri var._ [gamma] Linnaeus, S.N. p. 142 (1766). _Perruche à collier de l'Isle de Bourbon_ Daubenton, Pl. enl. 215. _Perruche à double collier_ Buff., Hist. Nat. Ois. VI, p. 143 (1779). _Alexandrine Parrakeet var. C. Double Ringed Parrakeet_ Latham, Syn. I p. 326 (1781). _Psittacus eques_ Boddaert, Tabl. Pl. Enl. p. 13 (1783). _Psittacus semirostris_ Hermann, Obs. Zool. p. 125 (1804). _Psittacus bitorquatus_ Kuhl, Consp. Psitt. p. 92 (1820). Rose Ringed Parrakeet var. B. Latham, Gen. Hist. II p. 161 (1822). _Psittacus bicollaris_ Vieillot, Enc. Meth. III p. 1385 (1823). _Palaeornis bitorquatus_ Vigors, Zool. Journ. II p. 51 (1825). _Palaeornis borbonicus_ Bp., Rev. and Mag. Zool. 1854, p. 152. No. 140. There has been considerable confusion with regard to this parrot. It was first asserted that it occurred on both Bourbon and Mauritius. Then Professor Newton separated the Mauritius bird as _Pal. echo_. Salvadori, however, in Cat. Birds Brit. Mus. XX, p. 442, reunited the Bourbon and Mauritius birds, while quite unaccountably stating only Mauritius as the habitat. The Abbé Dubois describes this bird as follows: "Green Parrots as large as pigeons having a black collar." Now the species of _Palaeornis_ from Rodriguez, the Seychelles, and the mainland of Africa are all distinct, and the other land birds of Mauritius are and were different from those of Bourbon. I therefore feel quite certain that Professor Newton is right, and that his _Palaeornis echo_ is distinct from _P. eques_, though, unfortunately, we do not know in which way the two forms differed. Habitat: Bourbon or Réunion, but now extinct. No specimens known. {68} PALAEORNIS ECHO NEWTON. _Palaeornis echo_ Newton, Ibis 1876, p. 284. _Palaeornis eques_ Salvadori, Cat. Birds Brit. Mus. XX, p. 442 (1891). Description of Male: Green, the occiput tinged with bluish; a narrow black stripe from the nostrils to the eyes; broad black mandibular stripes passing down and across the sides of the neck where they meet a pink collar, which is interrupted on the hind neck; under wing-coverts yellowish green; central tail feathers scarcely tinged with bluish; tail below dark yellowish grey; upper mandible red, under mandible almost black with only a brownish tinge in places. Iris yellow. Naked skin round eyes orange. Wing 7.5 inches, tail 8.75 inches, bill 9 inches. The female differs by the absence of the collar, no bluish tint on occiput, and the bill entirely blackish.