68 Geometridae from Dutch New Guinea and Mefor Island 



November-December, 1919 (three $ $, three ? ?), and December, 

 1919, to January, 1920 (one ? of ab. euchroma). 



M. aroensis Roths., which is evidently also closely related, shows the 

 same dichromatism (as do several other species likewise) ; it differs, 

 however, apart from the narrow band — which may vary if the (to me 

 unknown) specimen described by Thierry-Mieg as scintillans is really 

 a mere aberration, as I rather suspect — in the extended blue of the 

 upper surface. 



20. Milionia eutyches sp. nov. (pi. XXIII, fig. 2). 

 3 , 55 mm. 



Eye hairy. Antennal ciliation 1. Hind tibia dilated, with strong 

 hair-pencil. Head and body black, mixed with blue, which is brightest 

 and most greenish on face, tegulae and patagia, but varies, as in the 

 allies, according to the incidence of the light. 



Fore wing moderately elongate, scarcely so much so as in arfaki 

 Beth.-Bak., and aglaia Roths, and Jord. ; black, shot in distal half 

 with deep-blue ; a bright-blue, somewhat iridescent subbasal patch 

 between M and hindmargin, distally encroached upon by red scales 

 on SM 2 and hindmargin ; a more restricted hindmarginal red patch 

 beyond it, scarcely crossing SM 2 ; an orange band much as in some 

 forms of the variable arfaki, and which may in a series prove equally 

 variable; this does not quite reach costa, is 5 mm. wide anteriorly, 

 2' 5 mm. from fold to hindmargin, its distal edge very gently curved, 

 not quite reaching end of cell, its proximal edge almost straight and 

 very oblique from SC to fold, its hinder end strongly overlaid with red. 

 Hind wing black, shot with deep blue ; band of fore wing continued 

 but narrowly, from costa to R 1 orange, anteriorly with some black 

 irroration, from R 1 to its end at SM 2 predominantly red, behind 

 R 1 excurved, behind M 2 narrowing, at its end scarcely 1 mm. 



Underside with the band of both wings broader, orange, that of 

 fore wing straighter, distally reaching DC, that of hind wing with a 

 rather broad and deep proximal indentation between the radials. 



Mount Kunupi, Menoo Valley, Weyland Mountains, 6,000 feet, 

 December, 1920, to January, 1921. 



Differs from the closely allied arfaki in being larger, the band of 

 fore wing more curved, that of hind wing more bent, both broadened 

 beneath, the abdomen dorsally with the blue reflections darker and less 



