ruhriiiiacu- 
laia. 
atiaViplaga. 
prolongaUt ■ 
viclnUaria. 
Icucocraspc- 
da. 
rigua. 
nigricorms. 
riihriceps. 
onicdiniar- 
go. 
rhodocera. 
shorii. 
homcdotis. 
planiaria. 
subaspersa. 
apicata. 
34 CELIDOMPHAX; OMPHAX. By L. B. Proitt. 
37. Genus: Celiclomphax Pront. 
Differs from Heterorachis chiefly in the presence of a series of strong abdominal crests and in the non- 
pectinate antenna of the while that of the d' is strongly pectinate. Palpus short. Wings finely strigulated, 
as in Prasmocyma; apex of fore wing somewhat more acute than in typical Heterorachis', hindwing with 1st 
median stalked. The species are closely related, possibly even forms of a single, highly variable species. 
C. rubrimaculata Warr. (4 b) is known by the large (though variable) blotches at anal angle of each 
wing, combined with an anterior terminal spot on forewing. Best known from Natal, but reappears in Senegal. 
C. analiplaga Warr. has the terminal markings confined to the anal angle of the foreAving and even 
here very small, occasionally Avanting. Described from Tauganyika Territory, but Avidely distributed from 
the White Nile to Natal and S.W. Africa. 
C. prolongata Profit. Like analiplaga biit with the foi’ewing rather more elongate, the hindAving Avith 
longer distal and abdominal margins and bent at 3rd radial, the shape recalling Thalassodes. Lado Enclave; 
? Uganda. 
38. Genus: Ompliax Guen. 
I’alpus short or minute. Tongue short. Antenna in the pectinate or simple, in the $ simple. Ab¬ 
dominal crests slight, sometimes Avanting. Hindtibia Avdth all spurs. Wings generally without markings; distal 
margins smooth; hindAving with 1st median separate from 3rd radial (except in nigricornis). A small group 
of African species, especially from the South and East, mostly closely related. 
A. A n t e n 11 a of A p e c t i n a t e. 
0. vicinitaria Wllgrn. is unknown to me, but probably belongs here. 20 mm. Pectinations “obsoletius 
capitatae”, that is, I sujipose, someAvhat thickened at their tips. Hindwing rounded. Uniform green above and 
beneath, paler than in planiaria. “Eastern Caffraria”. A Natal species Avhich agrees Avith the description 
except that the tips of the frings are Avhite, has the wings rather narroAver and duller than in leucocraspecla. 
0. leucocraspeda Prout (4 b) is distinguishable by its white fringes. Face bright red. Transvaal (loc. 
typ.), S. Rhodesia, Barotse and Angola. 
0. rigua sp. n. Expanse 28—29 mm. Near leucocraspeda. Lower V 3 of f^'-ce Avhite. Wings broader, 
strongly strigulate with Avhite, fringes green proximally, Avhite distally. South Central Angola (T. A. Barns), 
2 in coll. JoiCEY. 
0. nigricornis Warr. Smaller, rather more robust, foreAving relatively shorter; croAA'ii of head and base 
of antenna reddish (in leucocraspeda Avhite), pectinations longer; wings darker green, the fringes not white. 
$ unknoAA'n. Probably a Heterorachis. Mombasa. 
0. rubriceps Warr. ( = monoiihyes Swinh.) (4 c). Rather less small than nigricornis, hindAving less long. 
Head and proximal half of antenna deejAer red; pectinations very short (scarcely longer than diameter of shaft); 
terminal black dots and red-tinted fringe recall planiaria. Angola. - ornatiniargo Prout is probably an aberration 
or local form of riihriceps. It differs in having a series of somewhat triangular reddish-fuscous terminal spots 
on the A^eins, generally connected by a fine terminal line; fringes in the tyj)e more strongly spotted than in 
rubriceps. Nigeria; similar forms in Gold Coast and Belgian Congo. 
0. rhodocera Hnips. (2h). Rather larger than rubriceps, the pectinations a little shorter still; termen 
AA’ithout dark dots; fringe buff, with a faint indication of pinkish spots distally. More sprinkled Avith Avhite 
than in the other species, though our figure somewhat exaggerates this. The tyjie G (iiof given by 
Haaipson), from N.Mb Rhodesia, has the hindwing less fully rounded than Aisual, but otherwise specimens 
from N. of Lake Nyasa, the Transvaal and other parts of Rhodesia agree Avell with it. 
B. Antenna of d' simple. 
0. shorti Prout (4 c). A beautiful species, quite unlike any other Oniphax. The type form is only knoAvn 
from Selukwe, S. Rhodesia. — homalotis subsp. n. is smaller (29 mm) and lacks the hindmarginal expansion 
of the distal bands. Limbe, Nyasaland, November 192.5 (H. Barloav), in coll. Joicev. 
0. plantaria Giteft. (= rubriplaga Warr.) (6 a), is the commonest Omqihax and not very variable. The two 
abdominal crests, though small, are generally conspicuous, being reddish or fuscous. The black terminal dots 
are set on a fine pale line. Underside paler, especially in the $. — ab. subaspersa Warr. is the commonest $ 
form, and has the underside more or less sprinkled with grey atoms. - - ab. (?) apicata Warr. is a paler form. 
