264 AUSTRALIAN PSYLL1D.E, 



quite different in its structure. Instead of being formed in eon- 

 centric rings, it is made up of close delicate parallel bars, which 

 run from the base to the outer margins, giving it a beautifully 

 striated appearance. 



Lasiopsylla bullata, n.sp. 

 (Plates xi., fig. 3; xii., fig. 16; xiv., fig. 15). 



Lerp. — Thin bubble-like galls or excrescences upon the upper 

 surface of the leaves, produced by the attacks of the larvae on the 

 under surface of the leaves of several species of Eucalypts; 

 narrow and constricted at base, but swelling out in an elongate- 

 oral or rounded gall, from 4-8 lines in height and 4-5 in diameter; 

 very variable in shape, and from 1-12 on a single leaf ; when fully 

 developed the general green colour is frequently brightly tinted 

 with red and yellow. Basal orifice large, but closed with a cir- 

 cular cake of saccharine matter; the small larva crawls about in 

 its spacious chamber until nearly ready to pupate; then it is 

 enveloped in a mass of white flocculent wool, though in its earlier 

 stages quite free from such filaments. 



Larva bright canary-yellow, legs and antenna? semitransparent, 

 eyes bright red, the dorsal surface showing traces of the fuscous 

 marking of the pupa. Head short, broad, rounded in front, 

 antenna? very long and stout, clothed with coarse hairs. Thorax 

 short, broader than head; legs stout, covered with coarse hairs. 

 Abdomen long, rounded and coming to a rather slender point, 

 lightly clothed with coarse hairs. 



Pupa dull ochreous-yellow, apical portion of thorax and abdomen 

 pale green; dorsal surface of head, wing-covers, centre of thorax, 

 and a double row of spots on abdominal segments fuscous. Head 

 rounded; antenna? very long, of a uniform thickness, curving 

 round to shoulders, pointed at tips; eyes large, not pi'ojecting. 

 Thorax very broad ; wing-covers large, long, rounded at tip. 

 Abdomen short and broad, constricted at base, rounded to anal 

 tip. 



Imago. — Length -26 inch, antenna? -07 inch. 



