worcesteri, Chibia, [707]
Loriculus, [293]
Turnix, [23]
X
xanthocephalus, Chrysocolaptes, [402], [733]
xanthodryas, Acanthopneuste, [585]
Phylloscopus, [585]
Xantholæma, [389]
hæmacephalum, [390], [732]
intermedia, [391]
rosea, [391]
roseum, [391], [732]
Xantholestes panayensis, [472]
xanthonotus, Oriolus, [701]
Xanthopygia cyanomelæna, [450]
narcissina, [449]
xanthopygia, Cryptolopha, [476]