332 AUSTRALIAN PSYLIJD.K, 



of median suture, lateral ocelli well up on hind margin of eyes. 

 Thorax : pronotum almost angular in front, tapering off on sides; 

 dorsulum broad in centre, rounded on sides, tapering to extremities; 

 mesonotum large, arcuate in front, rounded behind; scutellum 

 large. Legs stout, femora thickened, tibiiB long, tarsal joints and 

 claws large. Wings long, slender, rounded at tips, nearly four 

 times as long as broad; primary stalk very long; stalk of subcosta 

 short; radius short, upper branch of cubitus curving downward, 

 the upper and lower forks of equal length, forming a small angular 

 €ell, upper one emerging just above tip of wing, lower branch of 

 cubitus rather long, upper fork long, curving round, lower fork 

 short, curving in at apex; clavus stout, clavical suture slight; 

 granulated strite indistinct. Abdomen slender, rounded at apex. 

 Genitalia : (5 ) short and broad ; lower genital plate broad, 

 rounded, and fringed with fine hairs; forceps short, broad; upper 

 genital plate long, slender, finger-shaped. 



Jlah. — Mount Wellington, Hobart, Tasmania (on foliage of 

 Eucalyptus aniyyckdina; A. M. Lea). 



The larvae attack the slender leaves, causing them to curl 

 round, thicken, and become brown; each larva buried in the tissue 

 forms an irregularly rounded blister, in the centre of which it 

 remains in a cell, sucking up the sap until ready to emerge 

 through the upper surface of the aborted leaf, which cracks and 

 opens. Generally an infested leaf contains so many larvae that 

 the galls touch one another in regular rows. 



Trioza olearlt:, n.sp. (Plates iv., fig. 11; v., figs. 11 and 15). 



Larva semitranspai-ent, a faint touch of yellow in abdomen, 

 €yes red. Head and thorax perfectly rounded, antennae standing 

 out like two little points; abdomen broader and flattened. 



Papa pale yellow, sometimes with a greenish tint. Head small, 

 Tiarrow, rounded in front, truncate behind; antennt>3 very short, 

 s:tout at base, curving round like a ram's horn; eyes large, dark 

 brown, not projecting. Thorax large, swelling out in front, 

 rounded on sides, slightly keeled down the centre; wing-covers 



