FASCICULI MALAYENSES 
7 
black basal ring on each segment, save the first, which is yellow with a fine 
black dorsal line. Anal appendages whitish-brown, the upper pair slightly 
longer than the lower, with a slight ventral projection beyond their middle ; 
lower pair nearly straight, slightly upturned at their ends. Legs yellowish- 
brown with a black line along the outer sides of the femurs and tibias. 
Pterostigma dark-brown with a pale margin. 
Length of abdomen, 37 mm. 
Length of hind-wing, 22 mm. 
Trichocnemis membranipes . 1 (Ramb.) 
I have not seen examples of this species from the Peninsula. It ranges 
from Tonkin to Java, Borneo, Sumatra. 
Genus Psilocnemis. de Selys. 
Copera, Kirby. 
[In my collection two forms of this genus occur. The first has the upper 
anal appendages of the male very short ; the end of the eighth and the ninth 
and tenth abdominal segments white, rather more obscure than in the Java 
type. This specimen comes from Sumatra and is Psilocnemis marginipes (Ramb.) 
= Psilocnemis lobimargo of Kruger, or if it is to be distinguished from the 
Javanese type = Psilocnemis marginipes lobimargo , Kruger [’98]. 
The second form has the upper appendages only one-half as long as the 
lower and only the tenth segment white. This is Psilocnemis vittata , de Selys, 
from Malacca. This type, Psilocnemis vittata vittata , de Selys, includes three 
well-marked races, namely, Psilocnemis vittata imbricata , Hagen (found in 
Padang in Sumatra, synonymous with Psilocnemis acutimargo , Kruger), also 
Psilocnemis vittata serapica , Hagen, from the Nicobars, and Psilocnemis vittata 
atomaria, de Selys, from Borneo. 
A point that appears to me to have escaped the notice of other observers 
is that the females of the vittata group are dimorphic. There exist evidently 
two forms of the female. One of these (ab. lacteola de Selys) is white, and 
has, when adult, white tibias. The second is a virago form, coloured like the 
male, and also like the male it has yellow tibias. I possess virago forms 
belonging to the vittata group, the marginipes group appears only to have the 
white form of female. Young males of marginipes resemble this lacteola form. 
It is to be hoped that those who have an opportunity of examining more 
abundant ‘ material ’ than is in my possession will give attention to this 
interesting subject]. 
