223 4. On THE SpECIES OF THE GeNTJS PrIONITURUS, and ON THE GeOGRAPHICAL DlSTRIBUTION OF THE PsiTTACID^ IN THE Eastern Archipelago. By Philip Lutley Sclater, M.A., Secretary to the Society. Having lately examined specimens of all the known species of the group of Parrots deuominated Prioniturus by Wagler, I take the opportunity of eadeavouring to rectify some errors which have been made with regard to their synonymy and geographical distribution. Genus Prioniturus, Wagler. o. Prioniturus. 1. Prioniturus flavicans. Psittacus platurus, Vieill. Nouv. Dict. xxv. p. 314, etEnc. Meth. p. 1367(?). Prioniturus Jlavicans, Cassin, Proc. Ac. Phil. vi. p. 373 ; Journ. Ac. Phil. iii. p. 155(C). "Psittacus discosurus, Vieill.", Temm. in Mus. Lugd. Diagn. — S • Viridis, colio undiąue cum pectore toto Jlavicantibus : macula verticali ruberrima undiąue cceruleo circumdata : alis extus viridibusfere concoloribus : rectricibus intertnediis valde elongatis, denudatis, disco terminatis. 5 . Pileo cyanescente : macula verticali nulla : colio undiąue cum pectore Jlavicantibus : rectricibus intermediis paulo elon-gatis, apicibus angustatis, et subdisciformibus. Hab. Inins. Celebes, regione Boreali circa lacum Tondano (Forsten et IVallace). Mus. Lugdunensi ( c? et $ ). Exaniples of both sexes of this Parrot are in the Leyden Museum, obtained by Forsten at Tondano in Northern Celebes, and marked ' Psittacus discosurus, Vieill.' The bird is not Psittacus discurus of Vieillot, but possibly, I think I may say probably, his Psittacus platurus. However, as this is by no means certain from Vieillot's insufficient deseription, and as the next species is generally con-sidered to be the P. platurus, it is better to adopt for the present species the \\&mQ Jlavicans, under which Mr. Cassin has accurately described the female. Mr. Wallace has lately met with this bird in the šame locality as that in which Forsten found it. As he truly says *, it is " very distinct in both sexes " from the P. setarius, 2. Prioniturus setarius. Psittacus setarius, Temm. PI. Col. 15. Prioniturus platurus, Wagl. Mon. Psitt. p. 523 (nec Vieill.) ; Bp. Consp. Av. p. 6. Psittacus spatuliger, mas, Bourj. Perr. t. 53. Rac/cet-tailed Parrot, Lath. Gen. Hist. ii. p. 167. pi. 24. Prioniturus platurus et P. tcallacii, G. R. Gray, List of Psitt. p. 1 7. * See ' Ibis," 1860, p. 141.