New Forms of African Lepidoptera 557 



them in cellule 7 ; a small black spot in 6 placed nearer the submarginal 

 line than to the postdiscal ; a dot below it in 5 ; a small spot in 4 placed 

 here midway between postdiscal and submarginal lines ; a similar spot 

 placed below it in 3, but merged in a black suffusion which extends 

 into 4 near the margin and into 2 ; a larger black spot in 2, placed near 

 the postdiscal line ; a still larger spot below vein 2 and situated more 

 proximal. The black lines and spots are mostly edged with grey-white, 

 and there is a well-marked white spot in the cell between the discal and 

 postdiscal lines ; costa, except between the first and third postdiscal 

 lines, blackish ; cellules 2-4 also blackish excepting a rounded spot of 

 ground-colour near the margin. Ground-colour in areas 5-7 paler, and 

 in other areas somewhat suffused with olive. Fringes pale-brown 

 chequered with black. 



Hind wing without markings, drab, dusted with purplish-brown, darker 

 along the outer margin. Fringes paler brown than the ground-colour. 



Underside pale yellowish-brown. Fore wing with costal edge 

 smoky-brown, more so at base ; cell smoky-brown except at base, 

 with a slight suffusion over the distal area. The third postdiscal line 

 on upperside marked below by a straighter line, accentuated at the 

 costa, the angled costal part being duplicated by a similar mark distally 

 of it. Hind wing with a black apical costal spot reaching vein V ; 

 proximally of this a short black bar reaching vein 7 ; a blackish and 

 ill-defined subanal spot in lc ; a faint discal line continued from the 

 costal bar ; a faint discocellular mark ; costal edge darkened, and some 

 sparse dark-brown scaling over the distal marginal area. 



Antennae dark reddish-brown, pale-brown at extreme base ; head 

 and palpi black mixed with pale-brown ; thorax black mixed with grey- 

 white ; pectus yellowish-white ; abdomen drab. At side of thorax close 

 to aural cavity is a black tuft. Abdominal black crests on the second, 

 third and fourth segments, the first one much larger than the others. 

 Fore legs only present, others lost, fuscous-black, femora and tibiae pale 

 yellowish-brown on the outside, tarsi marked with pale yellowish-brown 

 below. 



Length of fore wing : 19 mm. 



Habitat. — Irumu, west of Lake Albert, February, 1920, one $ . 



28. Marbla semihyalina sp. nov. 



$ . Upperside white. Fore wing w 7 ith distal area thinly scaled with 

 black to cell, and narrowing to the tornus. A small discocellular spot. 

 A distinct rounded black spot on vein 2 at its base, this spot variable 

 and sometimes absent. Hind wing without markings. 



