334 PARASITIC HYMENOPTKRA, I., 



petiole broad, spiracles separated from each other by a 

 greater distance than they are from the apex ; abdomen 

 entirely smooth ; second segment as wide at apex as it is 

 long. Legs long and particularly the hinder, tarsi longer 

 than tibiae, claws small ; antennas slender foi- the group, third 

 joint a little longer than fourth. 



Allied to Mesoiftenoideus, Skeatia, and Christolia. It may 

 be known by the red-coloured body, the smooth abdomen, 

 the minute areolet, open at the apex, and by the trans- 

 verse median nervure in the hind wings being broken in the 

 middle, not distinctly below the middle as in the genera just 

 mentioned. Red is an unusual colour in the Mesostenini. 



Erythromksostenus rufus, sp.n. 



9 . Rufous, antennae black, scape rufous, 6th to 14th 

 joints white ; wings hyaline, stigma and nervures black, 

 areolet punctiform, apical nervure obsolete : apex with a 

 faint, narrow smoky border ; transverse median nervure 

 semi-interstitial ; transverse median nervure in hind wings 

 broken in the middle, sharply angled in the middle. Tips 

 of mandibles black. Palpi dark red. Length, 8; terebra, 3 mm. 



Wollongbar, Richmond River, N.S.W. Bred from "Fern- 

 Moth larva." 



Face roundly raised in middle, closely punctured there, 

 sides smooth, separated from cjypeus by a shallow furrow ; 

 clypeus closely finely punctured on upper half, smooth on 

 lower. Malar space almost as long as antennal scape. Temples 

 very slR)rt, rounded ; occiput transverse. Metanotum 

 smooth, parapsidal furrows deep, reaching from base to base 

 of apical third. Scutellum smooth, sides strongly keeled to 

 top of apical slope. Metanotum at the base to the keel; the 

 rest closely reticulated, more strongly so towards apex, 

 where, on the sides, they are stronger than in the middle 

 and more longitudinal ; spines short, thick, rounded. Pro- 

 pleurae irregularly striated, smooth in middle above, stride at 

 base below stronger and more curved. Mesopleurae strongly, 



