It differs from _P. torquatus_ in the incomplete collar, darker green colour and broader tail feathers. This bird is still found in the interior of the island, but is rare and apparently on the verge of extinction. Habitat: Mauritius. Three specimens at Tring, four in the British Museum. {69} CYANORHAMPHUS ZEALANDICUS (LATHAM.) _Red Rumped Parrakeet_ Latham, Syn. I, p. 249, No. 50 (1781). _Psittacus novae seelandiae_ Gmelin (nec. Sparrm.), S.N. I, p. 328, No. 83 (1788). _Psittacus zealandicus_ Latham, Ind. Orn. I, p. 102, No. 58 (1790). _Psittacus novae-zealandiae_ Kuhl, Consp. Psitt. p. 44, var. 1 (1820). _Psittacus erythronotus_ Kuhl, Consp. Psitt. p. 45, No. 67 (1820). _Psittacus pacificus_ var. No. 3, Vieillot, Enc. Méth., p. 1387 (1823). _Platycercus pacificus_, part. Vigors, Zool. Journ. I, p. 529 (1825). _Platycercus erythronotus_ Stephens, Gen. Zool. XIV., p. 129, No. 9 (1826). _Conurus phaeton_ Des Murs, Rev. Zool. 1845, p. 449. _Platycercus phaeton_ Des Murs, Icon. Orn. pl. 16 (1845). _Cyanorhamphus pacificus_ Bonaparte, Rev. et. Mag. 1854, p. 153, No. 184. _Cyanorhamphus erythronotus_ Gray, Hand-list II, p. 140, No. 8029 (1870). _Cyanorhamphus forsteri_ Finsch, Papag. II, p. 270 (1868). This bird has received a variety of names owing to the adult bird being very different to the younger and quite young birds. _Adult_, forehead black; stripe from lores passing through eye almost to hind-neck scarlet; rump scarlet; back and breast dull green; cheeks, head, neck, belly, under-tail coverts and wing coverts, bright green. Flight-feathers blue on outer, brown on inner, webs; bend of wing blue; tail feathers blue, edged with green. _Young_ differs in having a dull bluish-black forehead, brownish head, back mixed brown and green, rump and eye stripe chestnut red, and the underside greyish green. This species was confined to the Society Islands, where it was obtained during Cook's Voyage by Ellis and by Forster, and lastly by Lieutenant de Marolles in 1844. We only know for certain at the present day of the existence of two specimens, one in the British Museum, ex Massena collection, whose origin is doubtful, and one in Paris, collected by Lieutenant de Marolles. What became of the other two specimens of the latter's collecting, and of Forster's and Ellis' specimens, I cannot say. Habitat: Society Islands. Evidently extinct. {70} CYANORHAMPHUS ULIETANUS (GM.) _Society Parrot_ Latham, Syn. I p. 250 (1781). _Psittacus ulietanus_ Gmelin, S.N. I p. 328, n. 85 (1788). _Platycercus ulietanus_ Vig., Zool. I p. 533, Suppl. pl. 3 (1825). _Cyanorhamphus ulietanus_ Bonaparte, Rev. et Mag. de Zool. 1854, p. 153, n. 188. _Platycercus tannaensis_ Finsch, Papag. II, p. 272 (1868). _Psittacus fuscatus_ Pelz., Ibis 1873, p. 30.