288 AUSTRALIAN PSYLLID^:, 



then straight to tip, coming to a regular point at apex of marginal 

 cell; primary stalk long, stout; stalk of subcosta short; stigma 

 rounded in front and running to a long slender point; costal cell 

 short, broad; radius long, curving upward, emerging at tip of 

 wing; stalk of cubitus very long, curving downward, upper branch 

 of cubitus long, upper and lower fork curving downward, forming 

 an angular cell, lower branch of cubitus very short, upper fork 

 long, curving round, lower fork short, curving in at apex; clavus 

 stout, clavical suture thick. Abdomen short, stout. Genitalia (g) 

 short, broad, turned upwards; lower genital plate short, rounded; 

 upper genital plate long, elongate, oval; forceps short, rounded at 

 base, conical at tip; penis slender, straight : ($) sabre-shaped, 

 nearly as long as the rest of abdomen, fringed with stiff hairs on 

 the underside, and regularly toothed along upper valve. 



Hab. — Liverpool, Wagga, N.S.W. (on E. meUiodora; W. W. 

 Froggatt). 



I have also found the larva? and pupa? of this psyllid common 

 upon the foliage of E. hemiphloia, and several undetermined 

 Eucalypts in the neighbourhood of Penrith and Mittagong, but 

 in all cases they were free upon the twigs and constructed no 

 lerp-scales. As the structure of the lerp is very crystalline and 

 brittle, this is probably accounted for by the fact that in damp 

 weather the secretion will not set to form a protective covering, 

 so that the larvae are compelled to pupate without. The unpro- 

 tected larva? above mentioned were smothered with numbers of 

 red mound ants (Leptomyrmex purpurevs) which came to feed 

 upon the secretion, and protected them to a certain extent. 



Genus Spondyliaspis, Signoret. 



Head hardly deflexed, surface flattened, vertex gradually nar- 

 rowing to base of antennae; face lobes very long, cylindrical; eyes 

 large, convex, projecting laterally; anterior ocellus visible from 

 above; antennae long, filiform, 3rd joint longest. Thorax : pro- 

 notum large, slightly convex; dorsulum transverse, not longer 

 than pronotum, lobed in front and behind. Forewings mem- 



