PROSOMPHAX; RHADINOMPHAX; DIOHROMA. By L. B. Prout. 
with the crests apparently almost obsolete, but as it was founded on faded specimens it is jierhaps in reality 
almost a synonym, jylmitaria is distributed from Kenya Colony to the Cape. - rhodampyx form. n. (? sp.) rhodampyx. 
differs in having the vertex of the head rosy, not white, the costal edge bright red. “Abyssinia”, a cJ in Mus. Berlin. 
0. modesta Warr. is smaller (31 mm), apex of fore wing more rounded, terminal dots almost obsolete, tnodesta. 
“South Africa”, the type in poor condition, perhaps an abnormal specimen of plantaria. 
0. marginata Warr. Possibly also an aberration of plantaria. The cream-coloured terminal line has maryinata. 
more minute black dots and the fringes are paler at their tips; costal margin of forewing beneath more broadly 
red; $ beneath without grey dots. Founded on a ^ from Tiapang. A similar form occurs at Mfongosi, Zululand. 
0. idonea Prout. Rather narrower winged than 2 )lantaria, distal margins smoother, apex of fore wing idonea. 
not produced. Terminal dots altogether wanting, fringe rather uniform rose colour, without pale tips and 
darkened central line. Transvaal. 
O. bacoti Prout (4 c), with elongate wings and whitish hindwing, perhaps represents a separate genus, hacoti. 
or an aberrant Rliadinompliax with the costal vein of the hindwing not anastomosing. In the forewing, the 
1st subcostal generally anastomoses with both the costal and the 2nd subcostal. Abdomen not crested. Natal; 
also known from Bechuanaland and Transvaal. 
39. Genus: Prosoiiipliax Warr. 
This genus was founded by Warren on the type callista and was mistakenly supposed to differ from 
Omphax in having only one pair of spurs on the hindtibia. I have corrected this (Ann. Transv. Mus. VIII, 
p. 152) and pointed out that actually it only differs from some pectinated Omp)hax in having the palpus less 
minute (fully as long as diameter of eye) the costal vein of the hindwing approximated to the subcostal about 
to the middle of the cell; 1st median of hindwing not separate from 3rd radial. From Ghlorocoma it differs in 
its white hindwing, with elongate costal margin, and longer approximation of costal vein to subcostal. 
P. anomala Warr., formerly referred to Ompliacodes or Omphax, must be transferred here. Build rather anornala. 
slender. Antennal pectinations of G moderately long. Expanse 32 mm. Forewing with costal margin curved, 
apex rather sharp; rather dull bluish green, with darker green cell-dot. Kikuyu and Mau Escarpments. 
P. callista Warr. (4 c) is shaped more like a Rliadinompliax. Forewing brighter green than in anomala, callista. 
with white dots and strigulations. Cape Colony and I think Natal. 
P. deuterurga Prout. Expanse 33 mm. Forewing paler green than in callista, the silvery irroration and deuterurya. 
strigulation smaller and sparser, scarcely noticeable; costal edge narrowly tinged with fleshy ochreous; fringe 
pale green, tipped with whitish. Founded on a G from Krantzkloof, Natal. A rather smaller $ from Orange 
Free State probably belongs with it. 
40. Genus: Kliacliuompliax Prout. 
A narrow-winged relative of Omphax. Palpus about as long as diameter of eye. Tongue developed. 
Antenna of G dentate or very shortly pectinate. Forewing with anastomoses between the subcostal veins. 
Hindwing with the costal anastomosing with the cell to near its end. All the species are South African. 
Rh. pudicata Wall'. Distinguished from divincta. chiefly by the G antenna, which bears short pectin- padicaia. 
ations, scarcely as long as the diameter of the shaft. In the name-typical form, moreover, the fringes are tipped 
with pink. Knysna. — ab. ( ?) frondinata Feld. (2 i), is larger and has the tips of the fringes white. frondinata. 
Rh. divincta Walk. (4g). In this and the two following species, the G antenna is merely dentate. In divincta. 
divincta the forewing is of a uniform green, with the fringe paler. Cape, and reaching the Transvaal. 
Rh. sanguinipuncta Feld. (2 i) differs from divincta in having a rosy cell-spot on the forewing, the fringe sanyuini- 
paler pink. Hindwing whitish green, the fringe with a tinge of pink. Cape Town and vicinity. panda. 
Rh. trimeni Feld. (2i). Forewing yellow-green, hindwing whitish green. Cell-spot of forewing white, irimeni. 
ringed successively with black and red-brown. Both wings with a blackish terminal line, accompanied proxi- 
mally by narrow violet-white spots which — at least on the forewing — are separated from the ground-colour 
by a fine, sinuous brown line. Cape Town and vicinity. 
41. Genus: Dicliroiiia Westw. 
Similar in structure to Rliadinompliax, the forewing with the 3rd discocellular extremely deeply angled 
inward, the 1st radial well stalked, usually beyond the 2nd subcostal, the hindwing with costal margin still 
