OF INSULINDE. 75 
Chrysocerca, nov. gen. 
Closely allied to Chrysopa and having the same plastic 
characters as this genus. The male, however, has a pair of 
long curved cerci (app. sup.), which form a long forceps. 
Habitat: Java. 
The type of the genus is: 
Chrysocerca jacobsoni, nov. spec. 
(Plate 5, fig. 30, Q). 
Body yellow-green. Antennae somewhat longer than the 
wings, the basal joint broad, broader than long. Eyes 
black. Prothorax shorter than broad, anterior border semi- 
circular. Mesonotum with a large black point at each 
humerus of the wings. Legs yellowish green, rather short, 
the arolium black. Abdomen short, green, with short 
green hairs, the male with two long slightly curved pale 
green cerci. 
Wings rather broad, with angulated tips, hyaline, ner- 
vature pale green. Pterostigma pale yellow-green, rather 
short and inconspicuous, Costalfield of the forewings broad 
at the base, then gradually diminishing towards the apex. 
First crossveins joining the cubitus in the cubitalcell. 
Body 8 mm., forew. 10—111 mm., hindw. 8:—9} mm., ant. 15—16 mm. 
Abd. 5 mm. gr. br. 3i—4} mm, gr. br. 3—3} mm, 
App. / 1 mm. 
Habitat: West Java. 
I examined one © and 3 QQ from Batavia, collected in 
November 1907 and February 1908 by Mr. Edw. Jacobson 
to whom I dedicate this species. 
Genus Nothochrysa Mac Lachlan (1868). 
Mac Lachlan, Transact. Ent. Soc. Lond. 1868, p. 195 (1868). 
The species of this genus are characterised by the stout 
body and antennae, which are mostly dark coloured. The 
wings are narrow, with acute tips and rather open nerva- 
ture. The cubitalcell is divided into two rectangular cells. 
Notes from the Leyden Museum, Vol, XXXI. 
