30 
LOXORHOMBIA; HETERALEX; EUMELEA. By L. B. Prout. 
n'icevillei. 
idea. 
rectilineata. 
aspersa. 
iormosana. 
unilinea. 
assamensis. 
B. nicevillei Hmps. (2 g). Expanse about 60 mm. Both wings moderately robust, strongly glossy, 
ochreous whitish, the forewing suffusedly streaked with brownish at the costal margin and on the veins and 
more narrowly on the folds. Darjiling. 
43. Genus: iLoxoi’liomhia Warr. 
Point at end of the 2nd subcostal of hindwing slightly sharper than in the two preceding genera, fore¬ 
wing shorter, though with minutely produced apex; the forewing venation differing from that of Abraxaphantes 
in that the stalk of the first two subcostals anastomes with the costal, the 2nd subcostal afterwards anasto¬ 
mosing with the 3rd—4th. Palpus slenderer than in Abraxaphantes , with smooth, elongate 3rd joint. Antenna 
of the A bipectinate. Hindtibia of $ with hair-pencil. Again only one species known. 
L. idea Swinh. (2 h). Brown-grey, in places suffused; markings pale, partly dark-edged, conspicuous 
being the costal streak of forewing and the common oblique line from apex to abdominal margin rather near 
the base; hindwing with two more distal lines. Local in Burma. 
44. Genus: Heteralex Warr. 
Differs from Loxorhombia in its rather more slender wings, with the hindwing rounded, not toothed 
at the 2nd subcostal, and in having the antenna of the $ unipectinate. Range rather restricted, Greater Sunda 
Islands to Formosa. 
H. rectilineata Guen. (= microneata Walk., rarata Walk., aspilataria Pagenst.) (2 g). In both this 
species and the following, the whitish forewing shows the strongest dark irroration in the proximal part of 
the subcostal region, especially beneath, and they further agree in having a crenulate line on the underside of 
the hindwing distally to the cell-spot, rectilineata , however, has the costal margin of the forewing straighter, apex 
not produced, distal margin of hindwing rounder, oblique line differently placed, on hindwing proximal to the 
cell-dot, hindwing with a postmedian line developed. Known to me from the Malay Peninsula, Nias, Borneo, 
Banguey and Palawan. 
H. aspersa Warr. further differs from rectilineata in the appreciably longer pectinations of the antenna. 
The name-typical race inhabits Burma and the Malay Peninsula, and is distinguishable by its stronger brown 
irroration. — formosana Matsumura (= albescens Prout ) (2 g) is the race from Hainan and Formosa and is 
larger and much clearer white, with the terminal dots stronger, altogether recalling pale forms of rectilineata. 
H. unilinea Swinh. Very close to the preceding but with the $ antenna shortly pectinate, distal margin 
of forewing slightly more convex, its line not quite so oblique, cell-dot of hindwing more strongly developed. 
Hong Kong and Hainan. 
45. Genus: Eumelesi Duncan. 
A quite isolated genus, consisting of a large number of closely related species which are often difficult 
to distinguish one from another, though their generic position can be recognized at a glance. Moderately large, 
build extremely slender, antennae and legs extraordinarily long. Antenna nearly simple. Femora hairy. Hind- 
tibia of A fringed with hair; both sexes with all spurs. Abdomen elongate. Forewing with the 1st subcostal 
vein anastomosing with the costal and then with the 2nd subcostal. Hindwing with the 2nd subcostal shortly 
stalked. genitalia very complicated, but giving some good characters for the differentiation of the species; 
uncus trifid (except in obliquifascia), the arms forming the “crux” of Burrows (in lift.), and with two further 
arms (“chartae” of Burrows) articulated to the joint of the uncus and tegumen. In most species the crux is 
therefore placed well beyond the chartae, but in fumicosta, genuina and praeusta it is long, narrow and situate 
behind the chartae. 
Since publishing part 8 of the “Lepidopterorum Catalogus” I have given carefid attention to the genus 
and I trust that the brief survey given below will mark some real advance in our knowledge. All the species 
are Indo-Australian. 
E. biflavata. Not very variable, the sexes nearly alike, yellow aberrations of the $ almost unknown. 
Except for the two clear yellow patches of the forewing between the median line and the subterminal shade, 
the yellow apices and generally one or two ill-defined patches on the hindwing, the red irroration is nearly 
uniform throughout. Median line almost straight. Three races are known, but are not very sharply defined. 
-— assamensis subsp. nov. (= ludovicaria part. Warr. nec Guen.) has on the whole more yellow admixture, 
