OF INSULINDE. at 
Legs slender, rather short, yellowish red with brown 
annulations and spare black spines. The median and poste- 
rior femora with a large black halfring in their middle. 
Tibialspurs brown, somewhat shorter than the metatarsus. 
Abdomen slender, shorter than the wings, with very spare, 
short, yellowish hairs at the sides of the tergits and at 
the venter. 
Gonopoda yellowish with black spines. 
Wings very long and narrow, lanceolate, membrane 
hyaline, with green or bluish iridescence. Nervature dense, 
yellowish brown, the longitudinal veins alternating with 
black. Pterostigma nearly invisible, tips of wings narrow, 
acute. In rest the tips of the hindwings are about 2 mm. 
longer than those of the forewings. The pelotte is very 
small, yellowish hyaline and sessile. 
Body 23—26 mm., forewing 23—27 mm., hindw. 23—27 mm., ant. 5—6 mm. 
Abd. 18—20 mm., gr. br. 5—6 mm, gr. br. 4—43 mm. 
Habitat: Java. 
Burmeister’s description is, as in most authors of that 
time, very short. It also is pretty well applicable to acer 
javanensis, but the distinctive character is, according to the 
description: „alis posticis in quiete longioribus”; in the 
last-named species the hind- and forewings are in rest 
equal in length. The other characters given by Burmeister 
are applicable to both species. 
No other locality as Java is given for the type, which 
seems not to be in the Halle Museum, as Taschenberg 
does not mention it. Probably it is in Hagen’s collection 
in Cambridge, Massachusetts. 
I have before me a series of 3 specimens from Java, 
collected by Mr. M. C. Piepers; probably these are collected 
in Western Java. I further examined specimens from 
Batavia, collected by Edw. Jacobson in April, August, Octo- 
ber and November 1907, and from Tandjong Priok, collected 
by P. Buitendijk. From Central Java I examined specimens 
from Semarang, also collected by Edw. Jacobson. One 
Notes from the Leyden Museum, Vol. XXXI, 
