54 Hans vou Berlepsch on the 



paratively much longer wings, -wliicli are more pointed (not 

 rounded), its tail, the feathers of which are soft, with their 

 tips rounded (not pointed, nor are the rectrices anywhere di- 

 lated, as in certain Dendrocolaptidse with soft tails), the curved 

 bill, the very short legs, with their strong much-curved claws, 

 and the quite singular coloration make it very different fromi 

 that genus, and its correct position among the Dendroco- 

 laptidae must remain a matter of controversy. The bird may 

 be characterized as follows : — 



Xenerpestes (^6vo?= alienus, e/37r»7o-T>;9, nomen propr.), genus 

 novum Dendrocolaptidarum. 



Rostro brevi, gracili, conspicue deorsum curvato, basi latiore, 

 dein subito angustato, maxillae tomiis ad oris augulura 

 projectis, tumidis, dente finali nullo. Narium aperturis 

 oblongis, pone rostri basin, lateralibus, membrana partim 

 obtectis nee phimosis. Tarsis brevibus fortibus, digitis 

 brevissimis, unguibus fortioribus, valde incurvis iu- 

 structis. Digito externo interno vix longiore. 



Trunci pennis quam in genere Synallaxidi firmioribus, plurais 

 in f route rigidis setaceis, supra narium aperturas valde 

 prominentibus. 



Alis pro mole longioribus. Remigum primariorum decern 

 2°, 3°, 4° longissimis, fere sequalibus ; 2"= 7" secundariis 

 (numero novem?) multo longioribus. 



Cauda modice gradata, rectricibus externis mediis circiter 

 ] 5 mm. brevioribus : rectricibus omnibus laxis, latitudine 

 sequali, apicibus rotundatis nee acuminatis. 



Coloribus insolitis, sexibus similibus : ptilosi setatis juvenilis 

 diversa. 



Xenerpestes minlosi, sp. nov. (Plate IV.) 

 Corpore supra olivascente griseo, pileo nigrescentiore, plumis 

 in fronte striis tenuissimis scapalibus albis signatis. 

 Nucha et coUo laterali minus conspicue striatis. Super- 

 ciliis latis a naribus ad nucham ductis flavescenti-albis. 

 Corpore subtus sordide flavescenti-albo unicolore, sub- 

 caudalibus obscure griseo maculatis. Tectricium alarum 

 mediorum et longissimorum apicibus late albo maculatis 

 (itaque alis bifasciatis). Rectricibus colore dorsi, externis 

 in vexillo interno stricte albo marginatis. Rostro corneo, 

 mandibula basi infra flavescenti-alba. Pedibus plumbeis, 

 unguibus flavescentibus. 



