FAM. GEOMETRIDZE 73 
crested. Abdomen not crested. Build robust. Frenulum in cf very strong, terminating in a large 
knob (bicolor, fulgurata, lhalassias, Fig. T) or at least in a very considerable, though more seradual 
thickening (melanomma). Vorewing with costa nearly straight, gently arched distally, apex prominent, 
termen oblique (especially in type speces), slightly curved, cell 
Fic. 6 less than. one-half, strongly produced apically, DC  incurved, 
SC! from cell, free, SC? normal, R! stalked or separate, M! approx- 
imated at origin to R?; hindwing with 
termen rather long, rounded, sometimes 
subcrenulate, sometimes also with a small s C 
tail at R?, inner margin long, cell rather 
short, DC? slightly or sharply inbent, 
C closely appressed to cell for a short or 
moderate distance, then verv strongly In i 
diverging, SC? just separate or short- GE 
stalked, R?from near R!, M! short-stalked, 
: * Frenulum of Dzoscore Ó£celor, 
Hindleg of Dioscore melanonma, Warren, c. connate or separate. (S venitalia ;Iuncus Warren, Gg. 
massive, parallel, with large, broad socii, 
gnathos strong, pointed, harpe simple, penis pestillate, with very long, parallel sides and a small sharp 
point; coremata present. 
Early stages unknown. 
A small and rather compact genus, replacing Hiffarchus in the Papuan Region. The slight diffe- 
rences in shape seem clearly non-generic, as is certainly the case with those of the venation. ''he most 
significant of the latter is the frequent short-stalking of SC? of the hindwing with R!, which — as is the 
case with Uliocuemis along another line of evolution — has not yet become fixed generically. 
Type of the genus : Dioscore melanomma, Waxren (1907). 
Geographical distribution of species. — New Guinea to Fergusson Island. 
1. D. melanomma, Waxren, — Pl. 2, Fig. 6. British to Dutch New Guinea. 
Dioscore melanomma, Warren, Novit. Zool. Vol. 14, p. 132 (1907). 
2. D. bicolor (Warren). Fergusson Island, Dutch New 
Halterophora bicolor; Warren, Novit. Zool. Vol. 3, p. 290 (1896). Guinea. 
3: D. fulgurata (Warren). British to Dutch New Guinea. 
Halterophora fulgurata, Warren, Novit Zool. Vol. 4, p. 3o (1897). 
Loxochila (2) meeki, Warren, ibidem, Vol. 1o, p. 359 (1903) (nov. syn.) 
Dioscore mecki, Warren, ibidem, Vol. 14, p. 132 (1907). 
4. D. thalassias (Warren). Dutch New Guinea. 
Halterophora thalassias, Narren, Novit. Zool. Vol. 10, p. 263 (1903). 
5. D. homoeotes, nov. sp. 1), Prout. Dutch New Guinea. 
1) Dioscore homoeotes, nov. sp. — JO, 45 mm. Deceptively like D. /ulgurata, practically indistinguishable in coloration and 
markings, but differing as follows: Vertex broadly cream-colour, not green. Antennal pectinations much shorter, ceasing rather /e/ore one-half of 
shaft. Forewing with termen curved in posterior half of wing (almost straight in /mgrerata); hindwing with termen more rounded, 
crenulate In addition, the tollowing less important distinctions may or may not hold when more material is compared : Abdominal white spots 
somewhat extended; white lines on wings somewhat sharper, that of hindwing slightly further from termen, fringes longer, terminal white spots 
larger, a single oblong one crossing the the submedian fold in each wing (in /uZgmrafa there is one small spot on either side of submedian fold, 
well separated); the pale yellow (not « white », as Warren indicates) metathoraic crest perhaps slightly stronger. The midtibia, which in typical /sZgrerafa 
is marked like the foretibia (purplish fuscous, spotted with ochreous), is in Zopeofes plain green above; but, strangely enough, this coloration is 
shared by undoubted /a/gzrata from Fak-Fak. Ninav Vallev, Central Arfak Mountains, Dutc h New Guinea, 3500 feet, Nov. 1go8 to Jan. rooo 
(A. E. Pratt). Ivpe in coll. L. B. Prout. 
rather more 
