BO. MECOPTERA AND PLANIPENNIA 
another specimen from the Preanger (West Java) collected 
by Mr. M. C. Piepers in 1888. 
This species is allied to the indian O. pubicosta Wk. 
but very distinct and certainly not a subspecies of it. 
Osmylus modestus Gerstaecker. 
(Plate 4, fig. 16, Q). 
Osmylus modestus Gerstaecker, Mitt. naturw. Ver. Neu-Vorpomm. und 
Rügen, XXV, p. 169, 7 (1893). West- and East Java. 
Quite different from diaphanus by the much narrower 
unspotted wings, where only some crossveins are slightly 
margined with brown. 
Body much stouter, pale brown, with pale yellow legs, 
the arolium, a median point on the tibiae and the underside 
of the femora blackish. Antennae yellow, the basal joints 
darker, rather brown like the mouthparts. Prothorax longer 
than broad, with long grey and red bristles. 
Abdomen of the © with the last segment yellow, the 
preceding ones brown, with two short, straight, conical app. 
sup. and a semicircular genitalvalve; brown in the female. 
Wings elongate and narrow, equally broad and with obtuse, 
rather rounded tips. Longitudinal nervature yellowish, the 
radius and subcosta with long fuscous lines, in the fore- 
wings more distinct. Crossveins brown or white, those 
which are surrounded with brown are very distinct in the 
forewing and form traces of pale crossbands in the female, 
in the male they are less distinct. Pterostigma yellowish 
with some very pale brown markings. In the © only some 
gradate veins and crossveins at the end of the cubiti in 
the forewing are dark brown. In the middle of the posterior 
margin is a pale yellow round tubercle, with three black 
markings shaped as a cloverleaf. Costalveins very numerous 
and simple in both wings. 
Body 8—10 mm., forewing 15—19 mm., hindw. 14—18 mm. 
Abd. 4—6 mm, gr. br. 5—6} mm., gr. br. 4—5 mm. 
Notes from the Leyden Museum, Vol. X XXI. 
