234 Records of the S.A. Museum 



first M-. Abdominal tergites dull yellow, the apical third of each tergite 

 delicately and beautifully surface-reticnlated. 



Hah. Lord Howe Island (A. M. Lea). Type, I. 12144. 



ORIMARGULA Mik, 1883. 

 ORIMARGULA AUSTRALIENSIS sp. nov. 



General colouration light grey, flic niesonotal praescutum with three confluent 

 brownish stripes ; halteres and legs brownish-yellow ; wings whitish subhyaline, 

 the stigma and cord narrowly and indistinctly infuscated. 



5 Length, about 3-8-4 mm.; wing, 5 mm. 9 Length, 5-3 mm.; wing, 

 5-5 mm. 



Rostrum reddish -brown, sparsely pruinose ; palpi dark brown. Antennae of 

 moderate length in both sexes, dark brown ; flagellar segments oval. Head dark 

 grey pruinose. Mesonotum light grey, the praescutum with the stripes rather 

 indistinct, broAvn, entirely confluent; scutal lobes brown, the median area 

 pruinose ; scutellum pale, sparsely pruinose ; postnotum brown, sparsely pruinose. 

 Pleura light grey. Halteres brownish-yellow. Legs with the coxae yellow, very 

 sparsely pruinose; trochanters brownish-yellow; femora and tibiae brownish- 

 yellow, becoming darker towards the tips; tarsi light brown, the distal tarsal 

 segments dark brown. Wings whitish-subhyaline ; stigma brown; coi'd narrowly 

 and indistinctly seamed with pale brown ; in some specimens the wings are much 

 more nearly unicolourous ; cell Sc yellow ; veins pale brown, veins Sc and R 

 yelloAV. Venation : Rs long, straight, or weakly convex ; r on R-"'"^ a little less 

 than its own length beyond the fork of Rs ; Rs and the deflection of R*+^ subequal 

 in length ; r-m a little shorter than the deflection of M}+^ ; petiole of cell M^ short, 

 about equal to r ; fusion of Cu^ and M about equal to M^ alone ; basal deflection of 

 Cu^ a short distance beyond the fork of Rs and nearly in alignment with r; 

 second anal vein short and straight. Anal angle of the wnng prominent, as in the 

 genus. Abdomen dark brown, sparsely pruinose. 



Hah. Queensland: Cairns district (A. M. Lea). Type, I. 12145. 



The genus is new to the Australasian region. 



ELEPHANTOMYIA Osten Sacken, 1859. 

 ELEPHANTOMYIA FUMICOSTA sp. nov.. 



General colouration brownish -yellow; legs black, the tarsi largely white; 

 wings greyish -brown, the costa and a conspicuous seam along the cord dark 

 brown ; al)dominal segments two to seven yellow, ringed caudally with dark 

 brown. 



S Length (excluding rostrum). 9r)-10 mm.; wing, 7-8 mm.; rostrum, 

 about 5-5 mm, 



