AUSTRO-MALAYAN DIPTERA 469 



sericeous down, more distinct posteriorly. Abdomen sliining-black, 

 with greenish-metallic reflections , clothed with a microscopic , 

 whitish pubescence (distinct from a side view only), and with 

 half a dozen stiff, long bristles at the tip (in the c/^). Halteres 

 black. Legs black ; femora, except the ends, yellow ; front coxae 

 yellow. Wings: a large triangular 

 brown spot occupies the whole 

 proximal half; the apex of the 

 (inverted) triangle is near the hind 

 margin, without touching it ; the 

 base rests on the costa ; within ciemmia amamus. 



the triangle there is a triangular 



hyaline spot , also resting on the costa , and leaving only a 

 narrow stripe of brown between it and a coarctate hyaline 

 crossband, crossing the middle of the wing (in some specimens 

 it is interrupted in the middle). Beyond this hyaline crossband , 

 a broad brown one, expanded in the middle, reaches from the 

 costa to the posterior margin ; between it and the apex , the 

 space is hyaline, except that the costa has a narrow, but well- 

 defined brown edge, of perfectly equal breadth, which almost 

 reaches the end of the fourth vein. Length 8-9 mm. 



Hab. Hatam, New Guinea {Beccavi 1875); seven male spe- 

 cimens. 



Cleitamia rivellioides n. sp. 9. — Head very much like that 

 of C. afnabil'is in coloring, only the face darker, reddish brown, 

 with strong bluish-metallic reflections ; more reddish above, and 

 silvery under the antennae ; orbits silvery, especially on both 

 sides of the antennae and posteriorly ; front black or brownish- 

 black, subopaque ; a velvet black crossband above the antennae 

 and a pair of velvety spots higher up , before the vertex ; the 

 latter metalhc-blue. Antennae reddish or reddish-brown, arista 

 short-plumose. Thorax reddish-brown posteriorly, darker ante- 

 riorly, opaque ; an opaque brown, oblique stripe on each side 

 alongside of the thoracic suture ; pleurae reddish-brown , with 

 bluish, metallic reflections and slightly sericeous. Abdomen black, 



