38 DIPTERA 



tawuy. Wings limpid^ very slightly brownish at the base ; veins 

 taAvny. Poisers green. 



Lengthy 1 lines. 



Auckland (Colonel Bolton). 



O. AXGUSTA. Walke)', I.e., Sujjp., p. 57 fStratiomysJ , (1854). 



Female. Body black, narrow, clothed beneath with white 

 tomcntum. Head tawny, vertex and disc of the face black. Thorax 

 along each side, and pectus, tawny. Legs nearly black ; fore tibiae 

 tawny. Wings greyish, brown towards the base ; veins black. 



Length, Sf lines. 



Auckland (Colonel Bolton). 



O. AUSTRALiENsis. Schmcr, I.e., ji. 59 (1868). 



Female. Black. Thorax scaly, copper-red, sides of the breast 

 yellow (when alive perhaps green) ; middle part of the breast black, 

 but covered all over with whitish scales. Scutellum bordered with 

 yellow. Lower aspect of abdomen with a broad yellow (green ?) 

 lateral stripe, which is narrow on the second and third segments, and 

 does not reach to the fifth segment ; last segment yellow ; belly apple- 

 green. Head black ; front broad, with two transverse-oblique im- 

 pressions with a furrow between them ; below the antennae there is a 

 double transverse spot divided in the middle by a furrow ; lower face 

 reddish-yellow. Antennae yellow; the third joint with a short pointed 

 style. Legs reddish-yellow ; hinder tarsi blackish-brown. Wings 

 hyaline, with rust-coloured veins. 



Length, 4 lines. 



O. iiYPOCHLORA. Noivicki, I.e., p. 15. 



Male and Female. Black ; the two first joints of the antennae 

 black, the third fuscous ; face, scutellum (except a basal spot) , sides 

 of the abdomen, and all the ventral surface green ; a great many spots, 

 and the legs, luteous ; wings hyaline, stigma and veins deep fuscous, 

 submarginal cell single, bases of the three next cells slightly smoky ; of 

 the veins arising from the discoidal cell, the first behind the base is 

 very thin, the third rudimentary or absent. 



Male. Green margin of the abdomen broad and unequal, 

 dilated in the posterior portion of each segment. Length, 4 lines ; 

 wing, 82 lines. 



Female. Middle of forehead green below, all black above ; green 

 margin of the abdomen narrow and sub-equal. Length, 4i lines ; 

 wing, 4 lines. 



New Zealand (Edwards). 



