70 H. C. EFFLATOUN. 



and inconspicuous, while that on the upper part of the occiput 

 rather longish and yellow, but on the lower part whitish. Vertex 

 rather shining black; a little protruding and very pointed in 

 front, and possesses a few pale, very inconspicuous hairs. Eyes 

 fairly large, quite bare, and meet for a distance which is about 

 equal to the length of the frons. Antennae rather porrected, with 

 the first and second segments very short and the third elongate 

 and oval; it is three times as long as deep, black but with white 

 and grey sheens; this third joint bears just before its middle a 

 short, black and bare arista. 



Thorax blackish-aeneous with steel-blue iridescence ; its pu- 

 bescence is very delicate, pale yellow, fairly long and conspicuous ; 

 the pleura? also possess very similar pubescence except for a tuft 

 of much longer hairs on the mesopleura?. Scutellum very shining 

 bronze-green with very pale, short and inconspicuous pubescence 

 on the disc, but with a few much longer, delicate, pale and ra- 

 diating hairs on the side and lower margins. Abdomen rather 

 shining black with three pairs of yellow markings. The first and 

 second segments are very shining steel-blue, but the second pos- 

 sesses in the middle of the sides two small oval yellow markings, 

 and the basal margin of this segment is dull black. The two oval 

 yellow markings on the third segment are a little nearer the basal 

 margin, whilst the pair on the fourth segment, which is very in- 

 flated on its apical end, are situated quite close to the basal 

 margin. The fifth segment is very short, also shining black with 

 its apical end yellow. The pubescence on the two basal segments is 

 very delicate, long and whitish; the hairs somewhat tend to di- 

 verge and are rather tawny and woolly; the pubescence on the last 

 three segments is very short blackish and adpressed. The small 

 hypopygium is yellow and ball-shaped and its upper part is clothed 

 with black hairs. 



Legs yellow and black; the two anterior femora with their 

 basal halves black and the tibiae are entirely yellow except for a nar- 

 row black ring near the middle; the last three joints of the tarsi 

 are also blackish and the two basal joints of the tarsi yellow. The 

 posterior femora are black except for a small yellow spot near the 

 base and they are decidedly bent at the apex; the posterior tibiae 

 and tarsi are also black, except for the basal half of the tibiae yel- 

 low; the tarsi are slightly longer than their tibiae; the hind meta- 

 tarsi are long and rather slender and nearly as long as the other 

 four joints together. 



Wings pellucid, feebly clouded with yellowish-grey with the 

 stigma brownish; Radius 4 + 5 is but very feebly looped. Squamulae 

 white. Haltercs yellow. 



