BY FREDERICK A. A. SKUSE. 



267 



ochreons stem in $. Abdomen clothed with brown hairs ; in (J 

 two and a half, in the 9 one and a half to twice the length of 

 thorax ; lamellae of 9 ovipositor often brown. Legs brownish- 

 black ; in 5 often greyish-brown or pitch-brown, covered with 

 brown hairs. In fore legs tibia about twice length of metatarsus. 

 Wings in ^ longer than abdomen, opaline, with pale veins ; in § 

 about length of whole body, pellucid, with a very delicate 

 violaceous tint ; the costal and first and third longitudinal veins 

 brownish; in both sexes with a brassy reflection. Costal ex- 

 tending beyond tip of third longitudinal, in ^ about J, in ^ about 

 ^- the distance to tip of fourth longitudinal vein ; auxiliary vein 

 joining costa midway between middle cross-vein and tip of first 

 longitudinal vein ; second longitudinal vein pale, in ^ joining 

 costa a little before a point midway between tips of first and third 

 longitudinal veins, in 9 about i- the distance between them ; third 

 longitudinal directed anteriorly, running close to costa towards 

 its tip, terminating much before apex of the wing ; fourth longi- 

 tudinal vein pale, almost reaching margin, terminating below 

 apex, and considerably nearer to tip of anterior branch of fifth 

 longitudinal fork than to tip of third longitudinal ; base of fifth 

 longitudinal fork lying much beyond middle cross-vein, its pos- 

 terior branch about § the length of anterior. 



Eah. — Sydney, and other localities in N.S.W. (Masters and 

 Skuse). May to July. 



Ohs. — A very common insect in Sydney, often observable in 

 immense clouds towards evenine:. 



'&• 



Genus 4. Tanytarsus, V.d. Wulp. 



Tamjtarsus, V.d. Wulp, Tijd. Entom. 1873-74, XVII. p. 134. 



Antennee 2--f 12-jointed in ^^ 2--1- 5-jointed in 9. Wings 

 haired. Third longitudinal vein straight or almost straio-ht, 

 running to end of anterior margin. Posterior branch of fifth 

 longitudinal fork straight or only slightly bent downwards. In 

 fore legs metatarsus longer than tibia. Forceps of ^ slender. 



