Annals of the Transvaal Museum, 
163 ' 
from a black costal dot just over 2 mm. before apex, following a similar 
course to that of biselata , though rather less crenulate ; pale sub terminal 
line as in invalida, i.e. thickening and bending proximal between the 
radials, nearer the termen and more interrupted in posterior half of wing, 
the fuscous shades, which (as in invalida) accompany it proximally, 
moderately pronounced, though not so strong as m squamulata, etc. ; 
dark dots on base of fringe pronounced. Hindwing with SC^-R 1 moderately 
stalked ; median shade almost as near base as antemedian of forewing, 
thus well proximal to the black cell-dot ; postmedian rather strongly 
sinuous and dentate, bub in places not very distinct — a conspicuous tooth 
on R 1 , a rather deep curve inwards between R 1 and R 3 , containing a 
slight tooth on R 2 ; distal area and fringe as on forewing, but perhaps 
with rather more dark shading distally to the subterminal line in addition 
to its proximal dark shading. Under surface similar, but forewing with 
suffusion in its whole basal area instead of first line, i.e. quite like a 
moderately well-marked biselata, a clear band of the ground-colour, as in. 
that species, showing between the median and postmedian. 
Barberton, 26th December, 1910. 
Ptychopoda purpurascens , n. sp. (PL XXY, Fig. 16). 
<J, 13 mm. Rather smaller than Pt. lacteipennis Btlr. (111. Het., VII, 
107) from Dharmsala, antennal ciliation somewhat shorter, hindwing 
elbowed in middle, with R 3 -M 1 shortly stalked. Thorax and forewing 
dull purplish with dark irr oration and a slight admixture of reddish scales, 
a yellowish spot on fold just behind middle ; a dark line from tornus„ 
less oblique than the wing-margin, curving strongly basewards after cross- 
ing M 1 , losing itself in the radial area before reaching the cell ; distally 
to this line, and broadening towards apex, the ground-colour is appreciably 
paler, with slight yellowish admixture ; fringe yellow. Hindwing reddish 
in proximal half, dull purple in distal, a zigzag whitish-yellow line in 
middle quite as in lacteipennis ; just distally to this line the purple colour 
is irrorated with reddish ; fringe yellow. Under surface similar but rather 
duller, the band of hindwing broader, less whitish, the line from tornus of 
forewing not distinguishable. 
Umkomaas, Natal, 30th-31st January, 1914 (A. J. T. Janse) ; the 
cotype kindly presented to my collection. 
Ptychopoda umbricosta Prout. 
In describing this species (Ann. Transv. Mus., Ill, 201), I overlooked 
an interesting and very rare abnormality in its venation, the complete 
loss of the distal wall of the areole, leaving the five subcostals on a common 
stalk, SC 1 arising first. The three or four species of Ptychopoda in which 
this occurs might possibly be formed into a new genus, but they do not 
seem otherwise congruous and the phenomenon has probably arisen 
independently. 
The East African race which I described (loc. cit.) as minimaria Warr. 
shows the same structure, strengthening my idea that it might prove 
conspecific, though the point cannot yet be regarded as absolutely 
established. But I find the insect in question is one of the — unfortunately' 
