. Bulletin of the British Museum (Natural History) Entom Supp. 128 List of Species of Iolaus (Trichiolaus) *Iolaus (Trichiolaus) argentarius Butler, 1879. Fig. Oberthur, 1916 (as leucoceros). leucoceros (Oberthur), 1916. Iolaus (Trichiolaus) leucoceros (Oberthur), see argentarius. *Iolaus (Trichiolaus) tnermeros (Mabille), 1878. Fig. Mabille, 1887. IOLAUS (TANUETHEIRA) H. H. Druce Tanuetheira H. H. Druce, 1891, Ann. Mag. not. Hist. (6) 8 : 148. Type-species : Papilio Union Fabricius, by original designation. Iolaus Hiibner (partim) ; Aurivillius, 1898 : 322 ; 1923 : 391. Eyes smoot
. Bulletin of the British Museum (Natural History) Entom Supp. 128 List of Species of Iolaus (Trichiolaus) *Iolaus (Trichiolaus) argentarius Butler, 1879. Fig. Oberthur, 1916 (as leucoceros). leucoceros (Oberthur), 1916. Iolaus (Trichiolaus) leucoceros (Oberthur), see argentarius. *Iolaus (Trichiolaus) tnermeros (Mabille), 1878. Fig. Mabille, 1887. IOLAUS (TANUETHEIRA) H. H. Druce Tanuetheira H. H. Druce, 1891, Ann. Mag. not. Hist. (6) 8 : 148. Type-species : Papilio Union Fabricius, by original designation. Iolaus Hiibner (partim) ; Aurivillius, 1898 : 322 ; 1923 : 391. Eyes smooth ; palpi extending well beyond the frons, second segment long, laterally com- pressed, clothed below with white adpressed scales and above with black scales, third segment rather short and similarly clothed with white and black scales ; antennae about half as long as the costa, with a gradually swollen fusiform club which has a reddish apex ; thorax clothed below with long white hairs ; all tarsi black and white-annulated, q* fore tarsus unsegmented. Wing shape. Fore wing inner margin with slight lobe near the base ; hind wing outer margin slightly angular at the end of vein 4, a short triangular tail at the end of vein 3, a long delicate tail at the end of vein 2, a broad tail about 2 mm. wide and 18-20 mm. long at the end of vein ib, a small lobe at the anal angle. Male secondary sexual characters : on the underside of the fore wing, in the middle of the inner margin, there is a tuft of long black hairs ; on the upperside of the hind wing there is a scaly patch at the base of vein 7, surrounded by a wide, glossy, satin-like area which covers a large part of the cell and costal area. Wing venation (Text-fig. 293). Fore wing with 11 veins in both sexes. H. H. Druce was in error, as Aurivillius noted, in attributing 12 veins to the <$. Male genitalia (Text-fig. 114). Uncus composed of two lobes with rounded apices separated by the shallow depression of the margin of the tegu
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