BY ESBEN-PETEKSEN. 211 



Thursday Island; one example of this rare insect, originally 

 described from a specimen (Vienna Mus.) from Moreton Bay. 

 It agrees very well with the description and figure given by 

 Brauer. 



Myiodactylus roseistigma, n.sp. (Plate xii., fig.6). 



Head yellowish-green; clypeus blackish-brown in front, becom- 

 ing reddish towards base. Palpi yellowish-green. On the 

 vertex from the base of the antennc^, and on the pro- and meso- 

 thorax a median, pale purple-red streak. Antennse yellowish- 

 red with a purplish tinge, especially on the dorsum. Between 

 each antenna and the eyes, a reddish-brown spot. Thorax 

 yellowish-green, with the exception of the mentioned median 

 streak. Abdomen pale yellowish-brown, some of the apical seg- 

 ments with a purple-red, median streak above, and a few lateral 

 vellowish spots (the colour of the abdomen probably changed bv 

 drying). J^egs yellowish-green. Body and legs with long, pale 

 pilosity. 



Wings very broad, and with an acute, parabolic apex. Mem- 

 brane hyaline; nervature pale green, and with long, pale hairs. 

 In the forewing, the costal and apical areas are very broad; 

 some of the cross-veins l>efore the pterostigma forked once or 

 twice, behind the pterostigma all cross-veins are forked, once, 

 twice, or thrice. In the subcostal area, a number of complete 

 or incomplete cross- veins. Near the base of Sc in the forewing, 

 a sooty-black spot. Some of the costal cross- veins in the fore- 

 wing with sooty-black spots at their forks. The cross-vein 

 between 11 and Pts below the pterostigma blackish-brown. At 

 the origins of the 6rst six branches from Us, a small dark spot. 

 The cross- vein at the end of Mj, Cu^, and Cuo blackish-shaded. 

 The four or tive cross- veins in the gradate series just below the 

 tip of II blackish and blackish-shaded. A few cross-veins in the 

 disc are faintly blackish-shaded. In the apical area, a few of 

 the forkings are blackish. In the hind wing, no marked cross- 

 vein, with the exception of a few forkings in the apical area. 

 Pterostigma distinct and red; where it touches Sc, the red 

 colour is changed to a sooty-black. 



