10 
FASCICULI MALATENSES 
both pairs dull black. Seen from above the upper pair are shaped like a pair 
ot pincers, broadest at their bases, bending inwards and becoming narrow 
towards their tips ; on the inner side, at about the middle of the basal third of 
their length is a rectangular bending ; in the middle of the second third the bend- 
ing is less marked ; the terminal third with the bend hardly marked and the apex 
pointed. Lower appendages rather longer than the upper pair, thread-like 
(fadenformig). Their first half with a remarkable twisting from below, upwards 
and outwards ; then at the middle they turn inwards at an obtuse angle, the 
knee of the angle being rather thickened. The terminal half is thin, thread- 
like and straight, terminating in a small bundle of yellowish bristle-like hairs. 
Seen from the side the upper appendages are first directed upwards, then bent 
at a right angle downwards ; a yellow knob lies on the upper side of the knee. 
The end is somewhat hatchet-shaped and slightly forked. The under appendages 
are wider in a horizontal plane, but seen in profile they are straight and 
thread-like. One male, Camp Jor, 2,000 feet.] 
Platysticta quad rata. Selys, 
2 $ , 2 9. Bukit Besar. 2,500 feet. April and May. 
Colour of the male. — ‘ Thorax black and pale green (on sides). Abdomen 
black with brilliant turquoise blue spots on the upper surface, corresponding 
to the yellowish markings on ventral surface.’ The female is coloured exactly 
as the male save that segments eight to ten of the abdomen are black, with a 
lateral blue mark on segments eight and nine. 
Anal appendages of the male. The upper pair each carry a curious brush- 
like structure on their inner surface, which projects inwards and down- 
wards. The lower pair have about three-fourths of the length of the upper 
pair and each carry at the commencement of the terminal third of their length 
a strong inwardly directed tooth (see text, fig. 1). 
[A large male from Kelantan collected by Waterstradt. Length of 
abdomen with appendages 40 mm., of hind-wing 29 mm.]. 
Platysticta sharpi, Laidlaw sp. n. 
2 $ , 1 $ (teneral). Bukit Besar. 2,500 feet. May. 
1 9 • Upper Padang, Perak. January. 
Allied to P. sundana , Kruger [’98], from Sumatra and Java, but dis- 
tinguished by the much less prominent projections of its prothorax. In fact, 
this species appears to be intermediate to some extent between typical members 
of the group of P. quadrata on the one hand, and P. halterata and P. sundana 
on the other. 
