840 DIPTERA OF AUSTRALIA, 



of the species effected. Some species ranst be left in abeyance on 

 account of the male sex being at present unknown. 



I. Five posterior cells. 



319. LiMNOPHILA LEUCOPH^ATA, sp.n. (PL XXIL, fig. 18). 



^. — Length of antennae 0*120 inch ... 3-04 millimetres. 



Expanse of wings 0-400 x 0-090 ... 10-16x2-27 



Size of body 0-440x0-050 ... lM7xl-27 



Head brown, with a yellowish-grey bloom ; front with a slightly 

 darker median line ; rostrum and palpi dark brown or blackish ; 

 antennae brown, the two basal joints more or less ochreous ; 

 flagellar joints sub-cylindrical, slender, the first five or six 

 becoming larger beneath at the apex ; with short bristly 

 verticils. Thorax brown, opaque, pruinose with greyish, with 

 three more or less distinct narrow stripes ; intermediate one 

 terminating midway between collare and suture, and lateral ones 

 reaching the suture ; an almost crescent-shaped marking behind 

 the humeral pits, stretching from below extremity of lateral 

 stripes almost to suture; pleur?e with a pale greenish-ochreous, 

 ochreous, or even sordid* testaceous stripe from collare to scu- 

 tellum (nicluding origin of the wings), followed by a deep brown 

 or black stripe which terminates at metanotum ; the remainder 

 brown or brownish ; scutellum more or less tinged with yellowish 

 or testaceous. Halteres infuscated, the base of stem ochreous. 

 Abdomen deep brown, levigate ; ovipositor long, slightly curved, 

 the valves tinged with testaceous. Coxae whitish to reddish- 

 ochreous. Femora sordid or greyish-yellow, deepening into black 

 before the tip, the tip white ; tibiae black or deep brown, with a 

 moderately broad ring of white at base, and slightly tipped with 

 white ; tarsi white, except that in the fore legs the metatarsal 

 joint is brown (just beyond the base) for half its length. Wings 

 tinged with pale brownish for three-fourths of their length, the 

 anterior margin brown to stigma, and the veins at apex with 



