268 Messrs. P. L. Sclater and O. Salvin on some new 



ing the hidden white median spot in the centre of the 

 crown, which is present in the true T. maculatum. 



2. EUSCARTHMUS PELZELNl, Sp. n. 



Euscarthmus mar gm'itaceiv enter, Pelz. Orn. Bras. p. 101 

 (exempl. ex Cuyaba) ; ScL & Salv. Nomencl. Av. Neotrop. 

 p. 45 (nee. d'Orb. & Lafr.). 



Supra brunnescenti-cinereus, dorso postico et uropygio oli- 

 vaceo indutisj loris albis ; ahs et cauda fuscis extus 

 olivaceo limbatis, ilhs sordide albo bifasciatis ; subtus 

 sericeo-albus, pectore palHdo fusco lavato ; campterio et 

 subalaribus flavidis, his pallidioribus ; rostro et pedibus 

 carneis : long, tota 4"0, alse 1*9, caudae 1*5. 

 Hab. Cuyaba, Brazil {Natterer, no. 545). 

 Mus. P. L. S. 



Obs. E. margaritaceiventri affinis, sed capite et dorso antico 

 brunneis nee cinereis, rostro quoque omnino cameo dis- 

 tingueudus. 



The differences between this bird and E. margaritacei- 

 venter of d^Orbigny and Lafresnaye have already been 

 alluded to (Salvin, Ibis, 1880, p. 357). There can be little 

 doubt that the grey-headed bird is the true E. margai'ita- 

 ceiventer obtained by d'Orbigny at Corrientes and elsewhere, 

 and identified by him with the Tachuris pardo vientre de 

 perla of Azara, of which we have before us a specimen from 

 Tucuman obtained by Durnford and others from Maranura 

 [Whitely] and Bahia [Wucherer). These last were described 

 by us as E. ivuchereri (Nomencl. Av. Neotrop. p. 158) ; for we 

 then believed the Cuyaba bird to be E. margaritaceiv enter, as 

 it had been determined by Von Pelzeln. 



Under this name Von Pelzeln mentions eight specimens of 

 the present species as having been obtained by Natterer in 

 various localities in Southern Brazil. 



Tyranneutes, gen. nov. 

 Tyranneutes gen. nov. ex fam. Tyrannidarura, generi Tyran- 

 nulo affine, sed rostro crasso, ad basin dilatato et cauda 

 brevi rotundata diversum. Vibrissse rictales nullse. 

 Pedes parvi debiles. Alee longiusculae, remige tertio 

 longissimo, sccundo et quarto vix brevioribus. 



