250 THE DIPTEKA-BRACHYCERA OF TASMANIA, 



SciAPus CHALCEUS, Sp. nov. (Fig. 49.) 



Thorax metallic green, with bronze reflections ; scutelluni 

 metallic green ; abdomen metallic green or bronze ; legs 

 yellow ; upper branch of the discal vein and the posterior 

 cross-vein suffused with light brown, the posterior cross- 

 vein angulated in the middle, but the angulation not 

 marked by any veinlet. 



Length. Female, 6 mm. 



Hab. Mangalore. 



Female. Face and front grey. Proboscis large and 

 fleshy, in length about one-third of the height of head. 

 Antennae black. Thorax metallic green, with bronze re- 

 flections, but the whole rather dull in appearance, and not 

 with the vivid colouring of ,V. trifasciatus ; acrostichal 

 bristles short but distinct, the clorsocentral and lateral 

 bristles long ; scutellum dull metallic green, with two long 

 black marginal bristles.. Abdomen dull metallic green or 

 bronze ; the first segment and posterior halves of the second 

 to fourth segments with a. whitish tomentose appearance. 

 Legs light yellowy with the tarsi apically darkened; tibiae 

 with a few small black bristles. Wings with the upper 

 branch of the discal vein and the posterior crossi-vein suf- 

 fused with light brown ; the posterior cross- vein angulated 

 in the middle, but the angulation not marked by any 

 veinlet. 



This species, which is the same size as the common 

 S. trifasciatus, may be distinguished from that species by 

 the absence of any cross-bands on the wings; from 

 S. brevicornis it is distinguished by the angulation of the 

 posterior cross-vein being unmarked by an outer veinlet, 

 by the smaller size, darker antennae, and duller coloura- 

 tion. 



S. chalceus frequents tree-trunks in the bush, in which 

 localities it may be not uncommon. My dates range from 

 January 18 to March 21. 



SCIAPUS DISCRETIFASCIATUS, Macq. 



This species is described by Macquart as green ; abdomen 

 wfth incisions black ; posterior tibije in the male with a 

 black ring ; wings with two separated brown bands. 



Length. Male and female, 4 mm. 



Hab. "Tasmania."' 



According to Ma€Cj[uaTt's figure this species resembles 

 S. trifasciatus, but the wing-tip is clear, and the posterior 

 cross-vein is straight. It is unknown to me. 



