290 AUSTRALIAN PSYLLID^E, 



away on sides, hind margin deeply arcuate in centre, swelling out 

 and pointed on sides; dorsulum convex, broad, rounded on both 

 sides, elongate on outer margins; mesonotum large, arcuate both 

 in front and behind, rounded on sides; scutellura convex rounded 

 behind, fitting close into mesonotum. Legs long, slender, a short 

 black curved spine at apex of femora; 1st tarsal joint long, with 

 spines on inner edge; 2nd long, slender. Wings long, slender, 

 more than twice as long as broad, rounded on costal margin, 

 pointed at apex; primary stalk short; stalk of subcosta very long; 

 subcosta turning up, then running parallel with costa, and again 

 turning into costa, forming a narrow tail to the median cell, no 

 transverse nervure or stigma; radius short, parallel, then turning 

 sharply upward and coming out on upper margin of wing; stalk 

 of cubitus very long, longer than that of subcosta, upper branch 

 of cubitus almost straight (a little longer than stalk), upper fork 

 long, curving round and emerging just below tip of wing, lower 

 fork shorter, lower branch of cubitus short, upper fork curving 

 round, lower fork curving in; clavus long, clavical suture slight: 

 an irregular spotted or granulated mark on hind margin of wing 

 in centre of first cubital cell, and another between it and second 

 €ubital cell. Abdomen constricted at base, slender. Genitalia: 

 ((J) slender, lower genital plate broad, rounded on lower edge; 

 forceps forming two slender curved processes turned inwards; 

 penis slender; upper genital plate broad, conical, curved, truncate 

 at tip : (9) slender, pointed at tip. 



Hab.—Yovhei^, N.8.W. (on Br achy chiton populneum; W. W. 

 Froggatt) Brisbane, Q. (on Brachychiton sp.; H. Tryon) 



This is one of the most anomalous species I have found; and 

 the living psyllid with its bright green tints, delicate transparent 

 wings, and long slender legs and antennae might easily be passed 

 over at first sight as an aphis. The deeply cleft head, absence of 

 face lobes, and the peculiar venation of the wings render it a very 

 distinctive insect. The eggs are horn-colour, elongate-oval in 

 form, and deposited in patches containing from 30-40 in number 

 -on the upper surface of .leaves. The larvae and pupje cluster 

 together where they emerge from the eggs, the long filaments 



