274 A BEMAKKABLE NEW GALL-THEIPS PEOM AUSTRALIA. 



shorter; those of the seventli segment not sensibly longer than the others, nearly 

 as long as those of the thorax. Abdomen long and slender, sides of each seg- 

 ment arched, only the tube truncate-conical. Colour and chaetotaxy of the end 

 of abdomen as in the preceding stages. 



Fourth stage of a similar colour to third, but somewhat darker, brownish- 

 yellow. Also without red pigment. Antennae as in the preceding stage, but their 

 three basal segments brownish-yellow, not or only a little paler than the four 

 apical ones, which are a little paler grey than in the third stage. Mouth-cone 

 not overreaching the middle of presternum. Bristles of thorax not distinctly 

 longer than those oi abdomen; those of the seventh segment not longer than the 

 others. Abdomen very long and broad, with arched margins of segments, but 

 the ninth together with the tube truncate-conical. Bristles of these two last 

 segments distinctly shorter than the others of abdomen. 



Pre-pupa uniformly brownish-yellow. Cases of antennae shorter than the 

 head, horn-shaped. Mouth-cone not fully reaching to the middle of prosternum. 

 Bristles of prothorax considerably longer than those of meso- and metathorax, 

 which are not longer than those of abdomen. Abdomen as in the last larval 

 stage, but gradually tapering to apex, and with the two last segments of the 

 same colour as the others. 



First pupal stage brownish-yellow. Cases of antennae not yet reaching to 

 the fore-margin of prothorax. Mouth-cone reaching about to the midst of pros- 

 ternum. Fore-femora distinctly smaller than the head; fore-tarsi with a short, 

 broad, obtuse tooth. Wing-cases reaching to the middle of the margins of 

 second abdominal segment — in the apterous form naturally wanting. All bristles 

 in both forms long and sharply pointed, but in the apterous form already dis- 

 tinctly longer, than in the macropterous one. 



S-econd pupal stage of the same colour as the preceding one. Chaetotaxy 

 also the same. Cases of antennae distinctly overreaching the fore-margin of pro- 

 thorax. Mouth-cone reaching about to the middle of prosternum. Fore-femora 

 already enlarged, about as long as head or a little longer; fore-tarsus with a 

 very large, sharp tooth. Wing cases, as present, reaching to the fourth abdo- 

 minal segment. All other characters as in the first pupa. 



