54 
Hans von Berlepsch on the 
paratively much longer wings, which 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 
hill, the very short legs, with their strong much-curved claws, 
and the quite singular coloration make it very different from 
that genus, and its correct position among tlie Dendroco- 
laptidse must remain a matter of controversy. The bird may 
he characterized as follows :— 
Xenerpestes (£eVo<? = alienus, epiT^cTT ^,nomen propr.), genus 
novum Dendrocolaptidarum. 
Rostro brevi, gracili, conspicue deorsum curvato, basi latiore, 
dein subito angustato, maxillae tomiis ad oris angulum 
projectis, tumidis, dente finali nullo. Narium aperturis 
oblongis, pone rostri basin, lateralibus, membrana partim 
obtectis nec plumosis. Tarsis brevibus fortibus, digitis 
brevissimis, unguibus fortioribus, valde incurvis in- 
structis. Digito externo interno vix longiore. 
Trunci pennis quam in genere Synallaxidi firmioribus, plumis 
in fronte rigidis setaceis, supra narium aperturas valde 
prominentibus. 
Alis pro mole longioribus. Remigum primariorum decern 
2°, 3°, 4° longissimis, fere aequalibus ; 2° =7° secundariis 
(numero novem ?) multo longioribus. 
Cauda modice gradata, rectricibus externis mediis circiter 
15 mm. brevioribus : rectricibus omnibus laxis, latitudine 
aequali, apicibus rotundatis nec acuminatis. 
Coloribus insolitis, sexibus similibus : ptilosi aetatis juvenilis 
diversa. 
Xenerpestes minlosi, sp. nov. (Plate IV.) 
Corpore supra olivascente griseo, pileo nigrescentiore, plumis 
in fronte striis tenuissimis scapalibus albis signatis. 
Nucha et collo 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 striete albo marginatis. Rostro corneo, 
mandibula basi infra flaveseenti-alba. Pedibus plumbeis, 
unguibus flavescentibus. 
