COLLECTED IN DUTCH NEW GUINEA. 399 



metallic green, hronze-green, or j)urplish-hlue, tarsi darker jmrjjlish, front and middle 

 femora and tihice very hairy in male. 



Head black; occipital region vvliitish or greyish pollinose, clothed with black hair, 

 basioccipital region clothed with whitish hair ; front, except ocellar tubercle, yellowish 

 or buff-yellow pollinose, face clothed with bright ochre-yellow or chrome-yellow hair; 

 mystax yellowish, with a vertical row of five or six long black bristles on each side, 

 female also with a number of fine black bristles or bristle-like hairs between the vertical 

 rows of stout black bristles ; palpi black, clothed with yellowish bristles, and occa- 

 sionally also with one or two black or blackish bristles at the tips; antennce dove- 

 brown, first joint metallic purplish on outer side above, brownish pollinose below, first 

 and second joints clothed with black hairs and bristles, third joint twice or nearly 

 twice as long as first two joints taken together. Thorax: dorsum clothed with 

 minute black hairs, which do not obscure the ground-colour, humeral calli bearing 

 longer black hairs ; pleurae light grey pollinose, clothed with whitish hair, meso- 

 pleurae, however, clothed largely or mainly with black or blackish hair, and the long 

 hair on the metapleurse also black, though there are a certain number of yellowish 

 or cream-coloured hairs below. Abdomen: dorsum clothed with minute, appressed, 

 black hairs, which do not conceal the ground-colour, lateral extremities of second to 

 eighth tergites inclusive clothed with longer yellowish or blackish hairs, tergite of first 

 segment greyish pollinose, its lateral extremities clothed posteriorly with blackish and 

 anteriorly with whitish hair, venter very thinly clothed with long, fine, yellowish 

 hairs, hind margins of ventral scutes of second to seventh segments inclusive 

 silvery-grey pollinose ; hypopygium of male large (about twice the size of that oi Maira 

 spectaMlis Guer.), viewed in profile its lower margin appearing very convex at the base. 

 Wings : nearly hyaline area at base includes second costal cell except extreme tip, 

 proximal extremity of marginal cell, both basal cells except distal extremities, bases 

 of anal and axillary cells, and the alula ; veins dark brown. Halteres sepia-coloured, 

 knobs sometimes darker (clove-brown), median portion of stalks often paler (isabella- 

 coloured). Legs : front and middle cox« greyish pollinose, clothed above with whitish 

 and below mainly with black hairs ; hind femora moderately swollen a little beyond 

 middle ; long hair on underside of front femora in male yellowish, that on posterior 

 side of front tibise consisting of yellow mixed with black hairs, front femora in male 

 also with a patch of fairly long black hairs on inner side near distal extremity ; middle 

 femora in male with a large tuft of long black hairs (sometimes mixed with yellowish 

 hairs) on underside, middle tibise bearing very long, outstanding black hairs, except 

 on flexor side, where the hairs are yellowish or pale buff-yellow and finer ; hind femora 

 in male clothed mainly Avith black hair (mixed with some yellowish hairs below), 

 which is not so long as the hair on the front and middle femora ; hind tibiag in male 

 thinly clothed with black hair of moderate length ; hair on legs of female mainly black 

 (whitish or pale yellowish on posterior surface of front femora), much shorter than in 



VOL. XX. — PART xiii. No. 2. — June, 1915. 3 l 



