274 



Beach YSCELis subcoxica, sjjec. nor. (PI. iv,, fig. 1.) 



Female gall. Solitary or in pairs, often several or many on the 

 same leafy branchlet, but not crowded ; regular, conical on both 

 ends, apex at first acutely pyramidal, finally obtuse, furnished 

 with several distinct annulations. Aperture circular, mostly 

 minute, rim very narrow. Exterior green, longitudinally striated, 

 smooth, finally greyish-black or brown, more or less scaly rugose. 

 Cavity cylindrical, anteriorly funnel-like, posteriorly semicircular. 

 Female insect small, narrowly fusiform, tail-bristles moderately long. 



Length of gall, 25—30 mm. : diameter do., 8-10 mm. 



Male gall. Narrowly tubular, distinctly curved, rim dilated ; 

 mostly turned downwards or sideways; yellowish-green to red; 

 either almost singly or crowded in rows on the leaves near the 

 female galls, usually much more numerous on one surface than on 

 the other. Insect not seen. 



Length, 4-10 mm. ; diameter, 1-1-3 mm. 



Habitat. — Murray Bridge. On Eucalyptus uncitiata, F. v. M. 



The species is not uncommon in the Mallee scrub near the 

 locality, and may occur elsewhere. In its erect habit, and more 

 elongated, slender form it differs from B. conica, Frogg., which, 

 according to his figures, is more or less dependent. The respec- 

 tive male galls present also a different habit, being developed on 

 the leaves, while those of the latter are situated on the branchlets. 



Many of the female galls are found so crowded with chalcid para- 

 sites that they become wholly unlike the original, and in some cases 

 the originating insect has been choked, the cavity disappearing. 



Brachyscelis urxalis, sp. nov. (PI. iv., fig. 2.) 

 Female gall. Veiy regular, mostly solitary, rarely two to four 

 crowded together at the ends of small twigs ; urn-shaped, basal 

 part obconical, base narrow usually (rarely incrassated), neck 

 more or less conical, narrow, elongated ; rim wide, flat, formed 

 of obtuse, irregular, divergent lobes : inner disk slightly 

 depressed or raised, colour mostly l)rown ; aperture central, very 

 minute. Exterior nearly smooth, sliglitly striated longitudinally, 

 brownish green or grey. Cavity cylindrical with long narrow 

 channel anteriorly. Female insect small, elongate fusiform, hairs 

 long, tail bristles moderately long, very slender. 



Male galls. Very small, scattered along the small twigs near 

 the females, not crowded, conico-cylindrical, apex not dilated. 

 Insects not seen. Male. Female." 



Maximum length of gall ... 2-3 mm. 18-25 mm. 



Maximum length of Jieck ... — 3- 8 " 



Maximum diameter of gall ... O'7-l " 5-14 " 



Maximum diameter of neck... — 2- 3 " 



Maximum diameter of rim ... — 6- 8 " 



Habitat. — Murray Bridge, South Australia. 



