854 DIPTERA OF AUSTRALIA, 



Ohs. — This species is remarkable for its metallic blue colour, dark 

 wings, and broad, closely applied head. The antennae it seems 

 would scarcely reach the origin of the wings, the first seven joints 

 measuring only 1-66 mm. There does not appear to be anything 

 peculiar about the $ forceps, which are, however, difficult to examine 

 in a dried specimen. 



360. LiMNOPHILA LUCTUOSA, Sp.n. (PL XXII,, fig. 26). 



^. — Length of antennE© 0*035 inch ... 0*88 millimetre. 



Expanse of wings 0-250 x 0060 ... 6-34 x 1-54 



Sizeof body 0-250 x 0-030 ... 6-34x0-76 



Head covered with a yellowish-grey bloom (shining black when 

 rubbed) ; rostrum, palpi, and antennae black ; flagellar joints 

 globose to elliptical, with very short, sparse verticils. Thorax 

 covered with a yellowish-grey bloom, with three brownish stripes ; 

 the intermediate one disappearing before reaching the suture ; 

 lateral ones very short, reaching suture ; pleurae, scutellum, and 

 metanotum with a hoary bloom (the ground colour deep brown). 

 Halteres yellow. Abdomen brown, sparingly clothed with short 

 yellowish hairs ; ovipositor brownish-ochreous or fulvous. Coxae 

 and femora fulvous, the latter brown at the tip ; tibiae hrownish, 

 infuscated at the tip ; tarsi infuscated. Wings with a scarcely 

 perceptible brownish tint ; veins brownish ; stigma brownish- 

 grey. Auxiliary vein reaching costa opposite or before inner 

 end of second sub-marginal cell ; sub-costal cross-vein a little 

 before its tip; praefurca rather short, arcuated at its origin; petiole 

 of first sub-marginal cell one-third to half the length of praefurca, 

 and about half the length of anterior branch of second longitudinal 

 vein ; marginal cross-vein cutting stigma, and situated beyond 

 inner end of first sub-marginal cell a distance about equal to its 

 length, and more than twice that from tip of first longitudinal 

 vein ; inner ends of second sub-marginal and first posterior cells in 

 one line ; small cross-vein a little arcuated ; discal cell elongated, 

 the great cross-vein more or less beyond its inner end. 



