277 



Brachyscelis strombylosa, spec. noc. (PL iv., fig. ?ya-c.) 



Female gall. Solitary, suborbicular, sessile, often more or 

 less oblique and turned in the direction of the branchlet. 

 Exterior, when young, formed of numerous, subcorneal or sub- 

 arbicular tubercules, which become more irregular with age ; 

 apex truncate, crateriform, central cone lower than the margin ; 

 aperture small, usually circular, sometimes oval. Cavity large, 

 broadly oval, inner surface somewhat irregular, channel funnel- 

 like, short. Insect not known, Male galls not observed. 



Length of gall, 18-26 mm. ; diameter of gall, 20-25 mm. 



Habitat. — Murray Bridge. These galls occur sparingly on the 

 stouter branches and branchlets of Eucalyptus incrassata, and 

 are so firmly fixed, that they can only be detached w^ith some 

 difficulty, being themselves very firm and woody. The outer 

 walls are very thick and solid, and are mined by fair-sized 

 larva?, apparently of some weevils. A specimen of a Haplo7iyr 

 was doubtfully bred from one of them. 



Brachyscelis ovicoloides, sp. no v. (PI. iii., hg. '2a-f.) 



Female gall. Solitary, nearly sessile, elongate oval, always 

 curved much and obliquely away from the point of attachment, 

 and frequently much curved dorsally (much more even than in 

 the figure, pi. la); exterior bright-green, like the leaves, slightly 

 wrinkled longitudinally ; apex trmicate, brownish, rim fiat, 

 broad, centre of disk slightly depressed, without central cone ; 

 ajDerture small, circular. Cavity ovate, smooth, channel short, 

 funnel-like ; walls of equal thickness throughout, and composed 

 of three layers, viz., (1) exterior, thin, green, bark-like; (2) in- 

 termediary, thick, formed of conspicuous cavities filled with a 

 viscous gummy substance when fresh ; (3) innermost, thin, 

 whitish, composed of longitudinal fibres. 



Length of gall, 23-35 mm. ; diameter, middle 13-16 mm., apex 

 4-7 mm. 



Female insect piceous above ; a pale, broad, undefined, longi- 

 tudinal patch on the anterior part of the dorsum ; underside 

 dark shining brown or black, last four abdominal segments 

 yellowish, apex brownish ; anterior part of body smooth, abdo- 

 men with short, distant Ijristles. Head indistinct, antennae and 

 eyes obsolete apparently. Legs six, three-jointed ; basal joint 

 much larger than the following, terminal joint with a very minute 

 simple claw. Anterior pair smallest, posterior largest. Terminal 

 bristles two, very short. 



Length of body, 23 mm.; of head and thorax, 13 mm. ; of 

 anterior legs, 0-6 mm. ; of posterior legs, 1-5 mm.; of terminal 

 bristles, 1 mm. ; width of thorax, 10*7 mm. 



JIale galls. Solitary, scattered or crowded on tlie leaves, or 



