148 SYRPiiin.E. 



individuals of both sexes occur traces of a blackish stripe from eye- 

 margins to mouth-border ; postocular fringe yellow, ineons])icuous. 

 Occiput dusted with yellowish grey. Tliorax and scutellum 

 entirely orange ; former with wholly yellow pubescence to the 

 normal extent, and a row of yellow bristles on hind margin; latter 

 sometimes with hardly any pubescence other tlian the long up- 

 curved stiff hairs on hind margin ; dorsum of thorax appearing 

 tinged with brown when viewed from in front ; at least three black 

 or orange, brown-tipped spines on humeri, also two above and a 

 little in front of wing-base, two on upper part of niesopleiira, three 

 on posterior calli, generally all orange ; long yellow stiff hairs on 

 hind margin of dorsum ; soft yellow hair on pleuraj. Abdomen black, 

 base of 1st segment yellowish, as are two narrow, linear bands, 

 slightly arcuate in front, the first rather M'ider than the second, 

 lying over the margins of the 2nd and 3rd, and of the 3rd and 4th, 

 segments ; venter vei-y similar. Pubescence of abdomen short, 

 golden-yellow, invisible when viewed from behind, but conspicuous 

 when seen from in front. Legs orange ; hind femora some- 

 times with a broad sub-basal or median blackish baud ; they and 

 the posterior tibiae are generally a little brownish ; tarsi generally 

 darker towards tips. Wings yellowish-grey; a small broM ii 

 narrow cloud from middle of anterior margin, along the cross- 

 veins, dying away towards anal cell; wing-tip smoky-brown; 

 halteres orange. 



Lengih, 14-16 mm. 



Tyj^e in Leyden Museum {teste Wiedemann). 

 Eedescribed from a single c? (decorata, Walk.) and nine 5 2 

 in various collections. The identity of the species given here as 

 synonymous is certain, the f^/pes of decorata, linearis, and 

 nuheculosa being before me (in the British Museum). 



The type of decorata, AValk., from Celebes is in fairly good 

 condition and is the only cJ I have seen. It has the thoracic 

 dorsum blackish with deep blue reflections, leaving only moderately 

 narrow side mai'gins, the pale colour extending inwards at the 

 end of the suture. The hind femora have a broad median brownish 

 band, the hind tibiae are brownish on the apical half, and all the 

 tarsi are a little darker than in the more normal form. 



Of linearis, W^alk., a species described without record of 

 locality, only the type, in wretched condition, is present, labelled as 

 from India. Tlie head has been stuck on, and may not belong to 

 the body, judging by the frons, which widens rapidly fmni vertex 

 to antennae (whereas in the normal form it is barely wider below 

 than above). The wings are much darker brown anteriorly-, 

 making the dark patch in the middle of the costa less obvious ; 

 the costal patch is of the usual dull orange colour ; the abdomen 

 is all black, except for being r;ither narrowly pale at base of 

 1st segment and barely appreciably so on hind margin of 2nd. 

 Legs orange to tips of tarsi (the tarsus of the one hind leg 

 remaining is missing). 



