Publ. 14. X. 193S. 
MET ALL AXIS- D1THEC0DES. By L. B. Prout. 
149 
5. Genus: Metallaxis Prout. 
(See Vol. 16, p. 49.) 
Palpus short. Antenna of ciliate. Hindtibia of <$ with 2 strong spurs (type) or spurless; of f with 
all spurs. Forewing with areole double, 2nd subcostal arising from cell, 2nd radial from about the middle of 
the discocellulars. Hindwing with 2nd subcostal shortly stalked with 1st radial. Type: semiustus Swinh. The 
genus differs more from the two preceding in shape and pattern than in any fundamental characters of structure, 
but has a very different hindleg and differs further from Organopoda in the short palpus, froni Discoglypha 
in the point of origin of the 2nd subcostal of the forewing. 
M. semiustus Swinh. (16 b). Unique in the distribution of the grey and ochraceous-salmon of the upper- semiustus. 
side; underside more resembling a strongly marked Discoglypha underside. Khasis. 
M. semipurpurascens limps. (16 b). Structurally distinct from semiustus in that the $ hindtibia lacks semipurpur- 
the spurs but bears a strong hair-pencil. The differences in the tone and arrangement of the colours is also 
considerable, as can be seen from our figures, semipurpurascens was founded on a $ from Bhotan and has re¬ 
mained very rare in our collections; the typical form has been taken in Sikkim. I have also seen a form (aber¬ 
ration or very likely subspecies) from Kuala Tahan, Malay Peninsula, represented by a larger and more pinkish 
5; in it one proximal spur is strong, the other apparently vestigial. 
6. Genus: Psemlerythroloplius Front. 
Palpus with 3rd joint short, especially in the <$. Antenna of the $ bipectinate, with very strong branches. 
Hindtibia of the $ strongly thickened and tufted, without spurs; of the ^ with 3 spurs. Forewing with areole 
double, 2nd subcostal from cell; hindwing with 2nd subcostal not stalked. Only one species known, unless 
the Fijian be distinct. 
Ps. bipunctatus Warr. (16 b) cannot well be mistaken for any other known species. Named from the bipundcdus. 
paired white cell-spots of the hindwing. New Guinea, Ceram and Dampier Island, the original from Milne Bay. 
idmon Prout , from Fiji, has the apex of the forewing slightly less sharp, the tone more vinaceous, the median idmon. 
shade strong, rather more distally placed, at least on the hindwing; postmedian of forewing rather less proximal 
at 4th and 5th subcostals, the dot on 1st radial not enlarged; cell-spot of hindwing not distinctly bipupilled. 
May well prove a separate species. 
7. Genus: Apostegaiiia Prout. 
Palpus rather short. Antenna in both sexes ciliate, in the fasciculate. Hindtibia of the $ with a single 
(strong) terminal spur, in that of rectilineata also with a single proximal spur, the $ with a pair of terminal spurs, 
Eorewing with cell short, areole double, 2nd subcostal from cell; hindwing with 2nd subcostal and 1st radial 
about connate, or very shortly stalked. Genitalia of the Rhodostrophia type, but with gnathos undeveloped. 
Type: crina Swinh. Only two species known. 
A. crina Swinh. (16 c). Quite distinctive in structure and pattern; the latter, evidently brought about crina 
by some unexplained protective need, misled Swinhoe into describing it as a Stegania ( Lomographa). De¬ 
scribed from the Khasis, but extends to the Shan States and Cochin-China. 
A. rectilineata Swinh. (16 c) differs from crina , apart from its larger size, more ochreous ground-colour rectilineata. 
and obsolescence of terminal line, in that the hindleg has a femoro-tibial hair-pencil and a dense tuft on the 
1st tarsal joint, the $ hindtibia 3 spurs. Sumatra (loc. typ.) and Borneo. prosthesis subsp. nov. is somewhat prosthesis. 
less warmly coloured and the hindwing above and beneath has a well developed proximal line, placed nearly 
as the very fine line which is present in crina. W. Bali: Mondoktoempang, 2500 feet (J. P. A. Kalis), 2 
in the Tring Museum. 
8. Genus: IMihecoties Warr. 
(See Vol. 4, p. 46; Vol. 8, p. 72; Vol. 16, p. 49.) 
A genus of relatively few species (less than 20 have yet been described) but scattered in all the prin¬ 
cipal faunal regions, excepting only the Holarctic, sens. str. Antenna of with fascicles of cilia. Hindtibia in 
both sexes with terminal spurs only (in the $ occasionally with only one spur). Forewing with areole double, the 
point of origin of the 2nd subcostal variable. Hindwing rounded or (very frequently) bluntly angled at the 3rd 
radial, 2nd subcostal not or only slightly stalked. The few Indo-Australian Dithecodes belong chiefly to India 
and Malaysia; the two New' Guinea ones are in some respects outliers. 
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