134 DIPTERA OF AUSTRALIA, 



following few flagellar joints more obscure, the remainder 

 deepening into black ; first four flagellar joints subcylindrical, 

 the rest linear. Thorax yellowish -ferruginous, opaque, with four 

 dull brownish longitudinal stripes; intermediate pair approximate, 

 starting immediately below pronotum ; lateral ones short, begin- 

 ning below humeri ; suture dark brown ; pleurae between fore and 

 intermediate coxae (and the pectus) with a grey bloom ; scutellum 

 and metathorax yellowish-fulvous. Halteres yellowish fulvous, 

 with brown club. Abdomen shining ; the first segment and 

 anterior portion or whole of second fulvous or yellowish-fulvous ; 

 the following segments brown, sometimes obscure fulvous, the 

 terminal two or three (and genitalia) black. Coxae fulvous, the 

 intermediate pair with a grey bloom. Femora obscure fulvous, 

 more clear towai'ds the base, and black at the apex. Tibiae black, 

 or dark brown growing black towards the apex. Tarsi black. 

 Intermediate and hind tarsi rather more than twice the length of 

 tibiae. Wings with a distinct greyish tint ; the anterior border 

 fuscous, followed by a nari'ow almost hyaline streak ; seventh 

 longitudinal vein running tolerably close to and almost parallel 

 with the margin ; the anal angle more rounded off" than in M. 

 Helmsi. 



Hah. — Sydney and Woronora, N.S.W. (Masters and Skuse). 

 Three specimens. 



429. Macromastix constricta, sp.n. 



^. — Length of antennae '075 inch ... 1*89 millimetres. 



Expanse of wings 0-570 x 0-120 ... 19-47x304 



Sizeofbody 0-400x0-090 ... 10-16x2-27 



9- — Length of antennse 0-075 incn ... 1-89 millimetres. 



Expanse of wings 0-570x0-120 ... 19-47x3-04 



Sizeofbody 0-450x0-080 ... 11-43x2-02 



Head yellowish-ferruginous, with four indistinct brownish spots 

 between the eyes, the anterior pair very small, sometimes con- 

 fluent with the posterior pair ; frontal tubercle tolerably distinct 



