Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
   Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
     Infraclass Neoaves Sibley et al., 1988 see Subcohort Neoaves Sibley et al., 1988
       Parvclass Passerae see Superorder Passerimorphae Sibley et al., 1988
         Superorder Passerimorphae Sibley et al., 1988
           Order Passeriformes Linnaeus, 1758
             Suborder Passeri see Suborder Passeres (C. Linnaeus, 1758) C. Linnaeus, 1766
               Parvorder Passerida (C. Linnaeus, 1758) Sibley et al., 1988
                 Superfamily Sylvioidea
                   Family Pycnonotidae Gray, 1840 - bulbuls
                     Genus Alophoixus Oates, 1889 see Genus Criniger Temminck, 1820
                       1 Alophoixus finschii (Salvadori, 1871) see Criniger finschii Salvadori, 1871
                       2 Alophoixus flaveolus (Gould, 1836) see Criniger flaveolus (Gould, 1836)
                       3 Alophoixus pallidus (Swinhoe, 1870) see Criniger pallidus Swinhoe, 1870
                       4 Alophoixus ochraceus (Moore, 1854) see Criniger ochraceus F. Moore, 1854
                       5 Alophoixus bres (Lesson, 1832) see Criniger bres (Lesson, 1831)
                       6 Alophoixus phaeocephalus (Hartlaub, 1844) see Criniger phaeocephalus (Hartlaub, 1844)
                       7 Alophoixus affinis (Hombron & Jacquinot, 1841) see Thapsinillas affinis (Hombron & Jacquinot, 1841)