528 Mr. Vigors on some new subjects of Zoolos/- 



tailed Parrots^ and which M. Kuf^l has separated as a sction with 

 the title of Conurus, by tlie breadth, depression, an. rounded 

 apex of the tail : the greater number of the other graps in the 

 same section having that member narrowed and cuneted. The 

 'Aings also like the tail are roundeiJ, the frst quill father being 

 shorter than the second ; whereas lli mcst of the leighbouring 

 long-tailed groups the first and second qvii 1 feathers tre of equal 

 length. All the primary quill feathers excipt the firstare marked 

 by an abrupt emargination of the outer ^eh near th; middle ; a 

 construction, which seems peculiar to theoresent tIi\"5on of the 

 long-tailed Psi'ttacidce, with the exception of that a" Pezoporus, 

 111. The upper mandible is short, strong, aid dilatec, with a con- 

 siderably rounded culmen : the under is slorter thtn usual, and 

 the apex being abruptly bent inwards, theemarginaion is deeply 

 marked, and forms a profound groove. Tie myxa s convex and 

 entire, in which particular the present groip differ: from some of 

 the adjoining, where the myxa is more or legs rioted. The tarsi 

 are elevated, ar^d the toes and nails are k-jig an' slender. In 

 these last characters the present genus evinices ?^ 'ar alliance to 

 PezoporuSf in which the emargination of tl le q,ll feathers also 

 is apparent, although it is less abrupt, and Cfjmreices nearer the 

 apex of the feather. These two contermiuouf; genra differ chiefly 

 in the tail of the latter being more narrow/ an. cuneated, the 

 ungues being straighter, and the lower mandible "ossessing a less 

 profoundly sinuated emargination, together with osulcated myxa. 

 The genus Plafycercus contains a considerable nmber of species 

 corresponding with the characters given aboveof the type P. 

 Pennantiu Among the best known of these av-e Isitt. Jlavigaster^ 

 Temm., eximius, Lath., erythrcpterus, Sh. ; to wlch the beautiful 

 species Psiit, Brownily and Baueri of M. Tenimt^k may also be 

 added. Psitt. cornutusy Gmel. comes into the jVoup with the 

 conterminous species, which I am about to partcularize in this 

 article, of P. Pacificus, Lath., aurkeps, Kulm and THietanus, 

 Lath. The well known species Psitt. scapuyfUSf Bechst. also 

 appertains to this genus, with which it accord^ in the important 

 characters of the wings, tail, and legs; but it Sj^ms to be place 

 at the extremity of the group in consequeuc.v.>jf its bill being 



