OF INSULINDE. 15 
Antennae setiform, very long and mostly thin. Body and 
wingvenation of a ae yellow green colour. Areolum 
Simple. 1. eer oet woo ev Chrysopidae. 
7. Antennae shorter tad the body, thick, moniliform. 
Areolum large, bifid . . . . . « «. Nymphidae. 
Antennae as long as the body or longer, thin. Areolum 
simple or with an incision in the middle. Ocelli deve- 
lopedwonvabsent ss. 0 Sa Shea ee! ver Osmiylidae: 
Ascalaphidae. 
This family, to which the largest Planipennia belong, 
remembers by the colour and form of the wings much the 
Odonata and by the long clubbed antennae the Rhopalocera. 
As I have recently described it thoroughly in the » Catalogue 
des collections zoologiques du baron EH. de Sélys Long- 
champs”, 1 refer to this work for the species of Insulinde. 
The biology and development are unknown of nearly all 
species and many new forms are surely to be detected. 
Myrmeleonidae. 
The Myrmeleonidae or Ant-lions are familiar to every 
entomologist by the curious habits of the larva which, living 
in dry earth or sand, goes backwards and makes often pitt- 
falls to prey insects. 
The imagines are nocturn, also prey on insects as nearly 
all other Planipennia and are characterised by the short, 
mostly broadly clubbed antennae, the elongate densely reti- 
culated wings, which have the apicalfield with many rows 
of oblique cells. The postcosta of the wings, the length and 
form of the antennae, the legs and comparative length and 
form of the spurs are of most systematical value. The 
pattern of the head and pronotum are of much value to 
distinguish the species and their subspecies. 
Key to the genera. 
Male with the app. sup. developed into a forceps. An- 
Notes from the Leyden Museum, Vol. XXXI. 
