292 AUSTRALIAN PSYLLID.E, 



Imago. — Length 0-05, antennae 0-0125 inch. 



General colour pale yellow to light green, marked with brown, 

 tips of antennie and eyes black ; wings hyaline, with tip of 

 marginal and submarginal cells clouded with brown, nervures 

 light brown. Head long, broad, turning downwards in front, a 

 deep median suture with fovea on either side; arcuate behind. 

 Face lobes short, broadly rounded, hirsute. Antennae sjH-inging 

 out in front of eyes, short, slender; 1st and 2nd joints short, 

 broad; 3rd very long, cylindrical, as long as next four combined; 

 4th-8th uniform; 9th-10th forming a slender club rounded to 

 apex. Eyes large, hemispherical : central ocellus small, at apex 

 of median suture; lateral ocelli close to hind margin of eyes. 

 Thorax : pronotum convex in front, sloping down on sides; dor- 

 sulum narrow, truncate in front, rounded behind and tapering to 

 a spindle-shaped point on sides; mesonotum large, arcuate in front, 

 rounded behind; scutellum large Legs rather long; femora 

 stout; tibiai long, broad at apex, and lightly clothed with hairs. 

 Wings thrice as long as broad, slightly rounded in front to tip; 

 costal and inner nervures lightly fringed with fine hairs; primary 

 stalk short; stalk of subcosta long, subcosta long, running close 

 to costa, forming no stigma but a long slender tail to median 

 cell; radius ver}'' long, curving downward to tip of wing; stalk of 

 cubitus long, as long as stalk of subcosta, upper branch of cubitus 

 long, curving slightly upward, upper and lower forks short, 

 turning downward below tip of wing, both short and nearly of 

 equal length; lower branch of cubitus long, upper fork rather 

 long, rounded; lower fork very short, nearly transverse; clavus 

 rounded, slender; clavical suture long, slender. Abdomen short, 

 broad. Genitalia: {$) short, broad; lower genital plate short, 

 rounded; forceps short, slender, upper genital plate indistinct. 



Hah. — Botanic Gardens, Sydney (on Eucalyptus robusta; W. 

 W. Froggatt). 



The larvse cluster together in little families of as many as half- 

 a-dozen upon the broad leaves, producing a patch of delicate 

 white tlocculent down in which they lie close to the surface of 

 the leaf. 



