522 Zoological Society. 



Fam. Mtjscicapid.e. 

 Subfam. Fluvicolin^. 

 Genus Copurus*, n. g. 



< Platyrhynchus, Spix, -< Muscipeta, Cuv. 



DifF. Char. — The two medial rectrices greatly prolonged. 

 Rostrum triangulare (desuper spectanti) paulo longius quam latum, 



modice depressum. Culmen rotundatus, ad basin lente, versus 



apicem citiiis decurvans. Nares ovatse, patulse. Tomia maxillaria 



modice emarginata. Commissura leniter decurvata, gonys leniter 



ascendens. Vibrissae rictales mediocres. 

 AlfS longiusculse, remige prima breviore, 2^, 3^, 4*, fere sequalibus. 

 Cauda mediocris, quadrata, nisi quod maris rectrices duse iatermediae 



graciles spathuliformes reliquas magis duplo excedunt. 

 Tarsi mediocres, acrotarsiis paratarsiisque scutellatis. Digitus ex- 



ternus interne longior, ad basin paulo cum intermedio coadunatus. 



Ungues longiusculi, satis curvati, acuti, graciles. 



Habitat in America Meridionali. 



Species unica, C.filicaudus (Spix), Av. Braz. v. 2. pi. 14. {Mus- 

 cicapa leucocilla, Hahn.) 



Obs. This bird bears much resemblance to Pipra in the colours of 

 its plumage and in the elongate rectrices, as Mr. Swainson has re- 

 marked (Classif. Birds, v. ii. p. 90). The depressed beak, however, 

 rounded culmen, shorter tarsus, and slender claws, sufficiently prove 

 ita true place to be among the Flycatchers, near Alectrurus. 



Fam. PiPEiD^ ? 



Subfam. Pardalotin^ ? 



Genus PRioNocHiLUst, n. g. 



-< Pardalotus, Temm. 



Diff. Char. — Margins of the beak m.inutely serrated. 

 Rostrum longiusculum, subcompressum, mandibulis subsequalibus ; 



culmine subcarinato, juxta basin recto, deinde usque ad apicem 



gradatim decurv^ato ; commissura modice decurvata ; gonyde sur- 



sum curvata. Maxilla baud emarginata, sed tomia mandibulse 



utriusque per medietatem externam minutissim^ serrata. Nares 



oblongse, membrana supra tectae. 

 Alc£ mediocres, remige 1^ spuria, 3^, 4^, et 5^ subsequalibus. 

 Cauda brevis, rectricibus sequalibus. 

 Pedes subbreves, gressorii, acrotarsiis subscutellatis, paratarsiis in- 



tegris. Digitus externus interiore longior, ad medium per longi- 



tudinis dimidium coadunatus. 



Habitant in Malasia. 



Species : 1 . P. percussus (Temm.), PI. Col. 394. f. 2. 2. P. thora- 

 cicus (Temm.), PL Col. 600. f. 1, 2. 3. P. maculatus (Temm.), PI. 

 Col. 600. f. 3. 



Obs. The nearest affinity of this group is Calyptomena, Raffi, to 

 which it approaches in the structure of the beak and feet much more 



* KoiTTJ/, au oar; ovpd, the tail. 

 f Ilpiwv, a saw ; x^'^^s, a lip. 



