360 NOTES ON THE FAMILY BRACHYSCELIDiE, 



variety of the more regularly formed one, for when a tree is 

 attacked by this one its sap becomes so impoverished by the 

 quantity of galls it has to support that they in turn become slender 

 and attenuated from want of building material. This variety 

 grows upon Eucalyptus rohusta, the large, succulent leaves of 

 which seem to be attacked by many insect larvje. 



9. Coccid dull yellow to semi-transparent; 8 lines long, 5 lines 

 broad ; head and thoracic segments much wrinkled ; legs small 

 and short ; abdominal segments short and broad, thickly clothed 

 towards the apex and sides with long yellow hairs ; anal 

 appendages short, blunt, narrowly divided at base, turned slightly 

 outwards at the tip, upper side rather flat ; anal segments 

 densely clothed with long yellow hairs ; two lower thoracic and 

 first abdominal segment covered with very fine ferruginous 

 tubercles, the remaining abdominal segments margined above the 

 apex with a row of fine pointed tubercles, largest and stoutest 

 towards the tip. 



^. Galls growing in a cluster on a small twig, the cluster com- 

 posed of several hundred short twisted or straight male cells 

 sticking out at all angles ; many of them ai'e doubtless sterile; 

 slightly dilated at the apex and of a bright red colour, the whole 

 forming an irregular rounded or oval mass, often over an inch in 

 diameter. 



In the straight-horned variety the male galls ai-e clustered 

 together in irregular masses, but never in such large numbers or 

 so closely together, each gall standing out and more independent 

 of the others. 



This is a well-defined species, and does not vary much from 

 two forms which are evidently variations caused by the stems 

 being attached by only a few coccids or else by a large number ; 

 the large typical form is not common about Sydney, and is more 

 an inland species, while the small variety seems to be much the 

 commonest in the neighbourhood of Sydney. 



In the Ent. Mo. Mag. (1880, Vol, xvii. p. U5), there is an 

 article on " Eucalyptus galls," by Mr. R. McLachlan, in which he 

 describes and figures two galls handed over to him by Dr. M. F. 



