300 Transactions. 



femora clothed with long brownish to black hairs ; tibiae with a short and 

 stiff greyish vestiture, the anterior and posterior — particularly the former — 

 swollen apically ; tarsi golden-brown beneath, caused by a brush of short 

 rigid hairs ; anterior tarsi (fig. 21) very much broadened and shortened, 

 the protarsus being very little longer than the following joint ; posterior 

 protarsi elongate and slightly thickened ; claws apically black, otherwise 

 reddish-brown. 



Abdomen blue-black, rather shiny ; elongate but broader across the 

 middle ; clothed with delicate grey hairs, longer on the sides, and with 

 indistinct rigid black ones towards the sides of each segment ; surface 

 indistinctly transversely rugose. 



$. Length, 9 mm. 



Holotype : No. 1233, D. M. 



Habitat. — Day's Bay. 



C. ronana n. sp. 



A medium-sized somewhat hairy elongate fly with a brilliant coppery 

 thorax and brownish -black abdomen. 



cJ. Eyes bare, dichoptic ; ocellar triangle black, clothed with short 

 brownish-yellow hairs ; front somewhat swollen, dull blue-black but with a 

 greyish reflection, densely clothed with blackish hairs ; lunular area semi- 

 circular and black ; 1st antennal joint blue-black ; 2nd joint brownish ; 

 3rd ovate, brick-red, darker in some lights, and with pale-grey reflections ; 

 arista black. Face more or less vertical (fig. 20) ; shiny greenish-black ;. 

 clothed with a dense greenish-grey tomentum except on the protuberances — 

 one below end of antennae and the other above oral margin ; cheeks 

 greenish-black, clothed with short silvery hairs, which extend over the 

 blue-black occiput particularly along the orbits. 



Thorax and scutellum brilliant cupreous, with blacker reflections ; 

 clothed with short yellowish hairs, longer on the scutellum and pleurae and 

 forming a distinct fringe on the dorsum across the scutellar suture. Wmgs 

 slightly tinged with brown, stigma pale brown, veins brown ; vein M x 

 angulated and with a stump from this point into cell R- (fig. 22)*; squamae 

 and anti-squamae tinged with pale brown ; halteres golden-yellow. Legs 

 brownish-yellow with an indistinct fuscous spot in the centre of femora and 

 tibiae ; posterior tibiae and protarsi somewhat swollen ; tarsi, except the 

 anterior and middle protarsi, blackish-brown ; posterior tarsi with a golden 

 reflection beneath caused by the vestitute. 



Abdomen elongate, the sides parallel ; clothed with short silvery hairs, 

 longer at the sides ; dull blackish-brown (though somewhat reddish), except 

 the shiny greenish-black basal segment ; the sides of each segment narrowly 

 cupreous ; a pair of indistinct greyish spots, caused by the vestiture, and 

 seen best with the unaided eye, across the anterior margin of 3rd and 

 4th segments. 



<J. Length, 10 mm. 



Holotype : No. 1239, D. M. 



Habitat. — Rona Bay (E. H. Atkinson). 



* Frequently too much importance has been placed upon the presence or absence of 

 stump veins ; I have frequently found that a stump, though present on the wings 

 of some specimens of the same species, may be absent in others ; the wings of the 

 one specimen may even vary in this respect. 



