338 NOTES ON THE FAMILY BRACHYSCELlDiE. 



backwards and forwards with great ease in its long chamber ; 

 when laid on its back under the lens it is seen to turn the abdo- 

 minal segments straight up and remain in this position all the 

 time, resting only on the head and thoracic segments. This 

 coccid seems to secrete hardly any of the floury matter exuded so 

 plentifully by most species. 



Hah. — Cobar, N.S.W. On Eucalyptus sp. (Mr. A. Roxburgh). 



Opisthoscelis verrucula, n.sp. (Pi. xvii. figs. 3-5). 



9. Galls rounded green pea-shaped excrescences, slightly corru- 

 gated on the sides, sometimes nipple-shaped, growing singly or in 

 scattered groups of two or three on the same leaf as the male 

 galls ; opening small and irregular on the underside of leaf ; 

 chamber an irregular oval cavity with wall of chamber thickest 

 on summit ; height 3J lines, diameter 2J lines. 



2- Coccid (first stage) flattish, elongate-oval, tapering towards 

 the tip of abdomen, pale salmon pink, antennae stout, short, 

 conical, apparently 3-jointed, inserted in front of the eyes, the 

 latter round and black. Midlegs rudimentary, but no signs of 

 forelegs ; posterior pair with stout femora and tibiae, and short 

 blunt tarsal joint showing over sides of insect ; anal ring and four 

 incurved spines on the tip of the anal segment. 



9. Coccid (second stage) brownish-yellow, head and thoracic 

 segments large, rounded ; abdominal segments distinct, small and 

 tapering to the tip ; coccid attached to the roof of the gall by the 

 mouth (which forms a rounded mass when detached), lying acnss 

 the chamber, and not downwards as in Brachyscelis. No traces 

 of eyes, forelegs, or antennae ; the second or middle pair of legs 

 represented by two slight pointed excrescences ; hind legs well 

 developed, femora large, stout, tibia rather slender, tarsal joint 

 cylindrical, slender, nearly as long as the whole coccid, truncate 

 at tip ; thoracic segments large ; abdominal segments small, 

 tapering to the tip, which is rounded ; anal segment carrying an 

 anal ring with four curved spines forming the tail. 



9. Coccid (adult) bright red ; upper side flat, circular, slightly 

 concave, covered with white down ; underside of body wrinkled ; 



