98 NEW AUSTRALIAN ASILIDJi: 



mostly white, bub with a few black ones; scutellum grey,, 

 with two white, weak, marginal bristles. Abdomen black, 

 with yellowish tomentum, which is most conspicuous to- 

 v/ards the hindmargins of segments, the sides with long 

 slender white hindmarginal bristles, and short black bristly 

 pubescence; genitalia long, with black pubescence. Legs 

 with femora black, the base of middle pair, and basal, 

 third of posterior pair, yellow ; tibife light yellow-brown, 

 v/ith apex and tarsi black ; all joints with numerous white, 

 and a few black, bristles. Wings tinged with grey to- 

 wards the tips; cubital fork long, and hardly contracted; 

 second posterior cell a little waved, both above and be- 

 low, and slightly contracted ; the mediastinal and sub- 

 costal veins where they approach the costa are darkened, 

 which gives the wings a. stigma-like appearance; halteres 

 yellow. 



Female resembles the male very closely, but the 

 white bristles of the thorax are fewer in number, the 

 median thoracic stripe is narrowly divided, the abdominal 

 lateral bristles are smaller, and less conspicuous, and the 

 anterior femora have the base narrowly yellow instead of 

 being entirely black ; the abdomen consists of seven ob- 

 vious segments in addition to tlie ovipositor, the latter 

 being laterally compressed, long, and slender. 



This species is distinguished from all the other species 

 of R]i(th(I()toifoiims by the leg being unstriped ; it seems to 

 bo nearly allied to' Neoitamxix, but I have separated it 

 from that genus on account of the femora being partly 

 yellow, and the jDresence of white thoracic bristles, in con- 

 junction with the smaller and less bushy moustache, and 

 general appearance. 



Of this species a specimen of each sex were taken by 

 Dr. Ferguson at Milson Island, N.S.W., on October 31, 

 1914. In my Diptera-Brachycera of Tasmania, Part III., 

 I referred to these specimens as varieties of N . grcuninis, 

 but I now consider that they represent a distinct species, 



Rhabdotoitamus claripes, Sio. nov 



Face light yellow ; moustache white ( ^ ) or yellow 

 ( 9 ) ; thorax light brown, with one broad dorsal and two 

 lateral black stripes ; bristles on posterior half of thorax 

 mO'Stly white; abdomen black with hindmargins of seg- 

 ments yellow-brown; legs extensively bright orange; 

 wings hyaline or brownish. 



Length. Male, 11.5 mm; female, 15 mm. 



Male. Moustache white, scanty. Antennae and front 

 black. Thorax light brown, with one broad dorsal and 



