136 D. S. FLETCHER 



area extending to termen between veins M 3 and Cu lb ; small basal area on each wing, large 

 discal spot on fore wing and small discal dot on hind wing brownish grey. Non-hyaline 

 terminal area brownish grey narrowly edged proximally with brownish orange and irrorate 

 with dark grey to black; ill-defined subterminal fascia dentate, dark grey to black; terminal 

 interneural spots between veins M 3 -Cu lb , when present, similarly coloured. Underside of 

 non-hyaline apical area of fore wing uniformly dark brown; tornal area of fore wing and anal 

 area of hind wing dark brown edged posteriorly with light brown; apical area of hind wing 

 dark brown edged anteriorly with light brown. 



Measurements. Fore wing: $ i2-o-i4'5 mm; 9 I 3'° _I 4'5 mm. Antennal pectinations: 

 <$ 10 X , $ 7 X diameter of shaft. 



Two examples from Nigeria differ in having the terminal area formed as in 

 poly demon, but densely suffused with brownish yellow; the hyaline area is pale 

 and the discal spots small, as in iobathra. Further material may show the 

 Nigerian populations, polydemon and iobathra to be subspecies of euryscaphes. 



Identical in structure with iobathra and euryscaphes, but strikingly distinct in 

 both colour and pattern. 



Distribution (Map 3). Tanzania, Zambia, Rhodesia, Zaire, Angola, Nigeria, 

 Cameroun. 



Material examined. 



Zamarada polydemon Prout, holotype $, Zaire ('Belgian Congo'): Kafakumba, 

 1929 (G. F. Overlaert), without abdomen, in MRAC, Tervuren. 



Tanzania: Amani (Pringle), 3 <J, 1 $; ibidem, xi. 1962, 1 $ (all BMNH); Amani, 

 xi. 1965 (R. H. Carcasson), 2 $ (NMK, Nairobi). Zambia: Mwinilunga, 12.1.1965, 

 1 (J; ibidem, 9.V.1963, 1 $ (both BMNH); ibidem, v. 1961, 1 <J (NMR, Bulawayo). 

 Rhodesia: Matopos, Mtshabezi Valley, iii. 1966, 1 $; Vumba Mts., Umtali, ii-iii.1961, 

 1 $ (BMNH); ibidem, i-ii. i960, 1 <$; ii-iii. 1962, 1 <$ (both NMR, Bulawayo). 

 Zaire ('Belgian Congo'): Elisabethville, 17.iii.1952 (C. Seydel), 1 <$; ibidem, 

 9.VL1952, 1 ^; Shinkolobwe, 18.vii.1931, 1 $. Angola: Malange, 25.ii.1909 

 (W. J. Ansorge), 1 <$ (Zamarada polydemon Prout, paratype); Gamba, Bihe, 

 xii. 1934 (R. Brauri), 1 <J. Nigeria: Jos, vi. i960 (/. Boorman), 2 J (all BMNH). 

 Cameroun: Plateau de Kounden, 4 km S.E. Centre Veterin, 1410 m, 6-7.iv.1972 

 (C. Herbulot), 2 $ (coll. Herbulot, Paris). 



The BA THYSCA PHES-Grovp 



Characterized in the male genitalia by the form of the uncus, the apical third or 

 half slender and tapered, the base bulbous; by the weakly developed arms of the 

 gnathus and by the absence of a ventral plate; by the form of the dorsal process 

 of the valve, which is angled through 90 degrees at one-half, the apical half bearing 

 long, coarse spines; by the form of the fulcrum, which is dilate and bilobate apicad 

 to partly enfold the tip of the aedeagus and by the form of the vesica, which bears 

 a cluster of short spines. The male hind tibia is simple. 



In the female genitalia the lamella antevaginalis is sclerotized in the form of 



