280 AUSTRALIAN PSYLLID.E, 



of head. Thorax : pronotum ver}' narrow, rounded in front, 

 arcuate behind; dorsulum very large, prominent, convex, rounded 

 and narrow in front, swelling out and rounded behind; mesono- 

 tum large, broad, slightly depressed in front, with a faint median 

 suture, arcuate in front, rounded on sides, truncate at apex; 

 scutellum large, flattened, rounded behind. Legs short, stout; 

 tibiae long, tarsi and claws large. Wings more than twice as long 

 as broad, rounded from front margin to tip, which is slightly 

 acute ; primary stalk long, straight ; stalk of subcosta short; 

 radius short, not reaching to tip of wing; upper branch of cubitus 

 curving downward, upper fork emerging just above tip of wing, 

 lower fork shorter, forming an angular cell ; lower branch of 

 cubitus turning downward, upper fork rounded, lower fork curving 

 in at tip; clavus stout, clavical suture long, slender. Abdomen 

 large, rounded at tip. Genitalia : (9) very short, rounded and 

 hidden under tip of abdomen. 



Rab. — Wyong, N.S.W. (on Eucalyptus sp.; W. W. Froggatt). 



This is not a common species. The larvae produce much more 

 regularly formed spherical galls than is usual, measuring from 

 three to four lines in diameter, clustered together in such numbers 

 as to frequently abort the leaves. The opening is on the under 

 side of the leaf, with the walls of the gall very thick and fleshy. 



Trioza multitudinea, Tepper. 



Maskell, Trans. R. Soc. 8. Aust. 1898, p. 8, pi. iii., flgs. 11-17; 



Ascelis (?) multitudinea, Tepper, oj). cit., Yol. xvii. p. 278, 



1893, pi. iii, figs. 15-21. 

 Mr. Maskell redescribed this species, originally described by Mr. 

 Tepper in a paper entitled "South Australian Brachyscelid 

 Galls," in which he placed it among the gall-making coccids. He 

 sent some of these supposed coccid galls to Maskell, who found 

 that they contained the larva? of a psyllid from which he bred 

 some of the perfect insects. Among others he says that Mr. 

 Froggatt sent him specimens of the galls from New South Wales. 

 But I doubt if he bred any specimens from the galls that I sent, 

 and he probably concluded that the galls were the same, as I can 



