70 H. C. EFFLATOUN. 



and inconspicuous, while that on the npper 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 liairs. Eyes 

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

 equal to the length of the frons. Antennse 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 grsy sheens; this third joint bears just t)efore its middle a 

 short, black and bare arista. 



Thorax blackish-œneous with steel-blue iritlescence ; its pu- 

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

 the pleuras also possess very similar pubescence except for a tuft 

 of much longer hairs on the mesopleurse. Scutellum very shining 

 bronze-green with very pale, short and inconspicuous pubescence 

 on the dise, but with a few much longer, délicate, pule 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 basai margin of this segment is dull black. The two oval 

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

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

 fiated on its apical end, are situated quite close to the basai 

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

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

 very délicate, long and whitisli ; the hairs somewhat tend to di- 

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

 three segments is very short blackish and adpressed. The small 

 hypopygium is yellow and ball-sha])e(l and its upper part is elothed 

 with black hairs. 



Legs yellow and black; the two antcrior femora with thcir 

 basai halvcs 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 basai 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 tibia; 

 and tarsi are also black, excent for the basai half of the tibiœ yel- 

 low; the tarsi are slightly longer t])an thoir tibia^; the hind meta- 

 tarsi are long and rather slender aiid ncarly as long as the other 

 four joints together. 



Wings pellucid, feebly clouded with yellowish-grcy with the 

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

 white. Haltères vcllow. 



