Annals of the Transvaal Museum. 
11 
Genus Olapa (pi. I, fig. 5 ; pi. II, fig. 1). 
Olapa, Wlk., Cat. IV, p. 823 (1855) type flabellaria. 
Antiphella, Wlk., Cat. VII, p. 1743 (1856) type flabellaria. 
Hampson, Ann. S.A. Mus., p. 391 (1905). 
My specimens of flabellaria (teste Hmpsn.) has no areola, but vein 10 from 
upper median. Out of ten specimens nine had no areole, and the areole formed 
in the remaining specimen is not quite the same as in other species of 
Olapa, as it is formed by a bar between vein 10 and the stalk of 9 and 8, 
while in all other species it is formed by the anastomosing of 10 with stalk 
of 7, 8, 9 at 4. 0. flabellaria differs also in several other respects ; the 
second joint of the palpus is much smaller and bluntly pointed ; the 
process of the fore tibia is short ; vein 3 of hind wing is from J the distance 
of 2 to 4 ; while 5 is from closer to the lower angle and the discocellular 
is longer and more oblique ; 8 is connected with the upper median by a 
bar and not touching it, as in the typical Olapa. 
It may be that flabellaria is the highest development of the genus 
and has to be separated from the others ; provisionally I leave in the 
genus. 
In describing the genus Olapa, I use furv'a as a type, which I consider 
most typical to the genus. 
Proboscis very short ; palpi short, porrect, not reaching beyond frons, 
two jointed, of which the second joint is obtuse, cylindrical, and about 
2 times as large as the first joint ; eyes not quite J width of head, 
rounded ; antennae bipectinate, branches about 10 times thickness of 
base of shaft and gradually getting shorter towards apex, ending in 2 or 
3 bristles ; at base a tuft of hairs ; branches in $ only 2 times base of 
shaft ; fore tibia in A with a long process, curved towards the outside 
beyond the length of the tibia ; in 2 simple (except in 0. flabellaria, where 
the $ has a thin short process) ; mid and hind tibiae with 2 moderate 
spurs ; tarsae with short, smooth hairs ; abdomen in $ not quite as long, 
in $ just as long as hind wings. 
Fore wing shortly triangular ; costa and outer margin a very little 
arched ; inner margin nearly straight ; apex and tornus well rounded ; 
vein 16 simple at base ; 1c faintly represented ; 2 from before § lower 
median ; 3 from § vein 2 and angle ; 4 from lower angle ; 5 from well 
above the angle ; discocellular between 5 and 6, faint and curved inwards ; 
cell nearly § of wing ; 6 from a little below upper angle ; 7 and 8 on a 
stalk of 1 7, and from upper angle ; 9 and 10 on a stalk of -J 10 and from 
beyond -J upper median ; 9 just as it leaves 10, anastomosing with stalk 
of 7 and 8 at J, till nearly \ length of 8, so as to form the areole ; at first 
sight it looks as if 10 anastomoses with stalk of 7, 8, 9 in forming the 
areole ; 11 from upper median and parallel to 10 ; 12 parallel to costa 
for a great length. 
Hind wing broad, triangular ; costa, outer and inner margins almost 
straight ; apex and tornus well rounded ; a very small rounded lobe at 
16 ; la long and straight ; 16 straight ; 2 from before f lower median ; 
3 from § distance 2 to 4 ; 4* from lower angle ; 5 from J discocellular, 
which is oblique and angled inwards at -J ; cell over \ the wing ; 6 and 7 
