882 DIPTERA OF AUSTRALIA, 



Femora with anterior half tawny ; the yellowish-white ring of the 

 posterior tibiae situated a little beyond the middle. Halteres 

 tawny. Wings clear, with two spots and extremity brown ; the 

 spots to exterior margin, the first at base of mai-ginal vein, not 

 extending beyond the externo-median ; the second at base of sub- 

 marginal vein, extending to the discoidal cell ; the cross-veins 

 slightly bordered with brown ; the venation as in G. variegata 

 (G. hella, Walk.). Long. 5x1. 



Hah. — Tasmania. 



Obs. — I am compelled to re-name this species, cyanea having 

 been used by Westwood for another species in 1835. The above 

 (judging by descriptions only) seems to much resemble G. ajncalisj 

 Walk., from the same locality. 



379. Gynoplistia viridithorax, sp.n. (PI. xxiii., fig. 41). 



9 . — Length of antennae 0-100 inch ... 2-54 millimetres. 



Expanse of wings 0-380 x O'llO ... 9-64 x 2-79 



Size of body 0-440 x 0-070 ... 11-17x1-77 



Head deep metallic shining green ; sparsely clothed with short 

 hairs; rostrum, palpi and antennae black; the latter 17-jointed ; 

 first 8 flagellar joints with short branches, first two directed not 

 quite outwards, the last one a mere tooth ; next six joints elliptical ; 

 the terminal joint elongate. Thorax deep metallic shining green, 

 with slight bluish reflections ; pleurae with an oblique hoary stripe, 

 directed to intermediate coxae; scutellum tinged with brown. Hal- 

 teres testaceous-brown. Abdomen rather dark reddish-fulvous, 

 shining, almost cupreous ; the flrst two segments entirely, and the 

 following five more or less distinctly bordered laterally with viola- 

 ceous-blue ; ovipositor concolorous with abdomen, the valves long, 

 slightly curved. Coxse black, hoary ; trochanters brown ; femora 

 fulvous or testaceous, more or less brownish at apex ; tibiaa brown, 

 paler at base, and becoming black towards apex, with a whitish or 

 pale yellowish ring just beyond middle ; tarsi black. Wings sub- 

 hyaline, with a very pale yellowish tint, and two brown spots ; 



