very short, but is broader than the dist.il which is loijg and tapering. 

 Tiie terminal joint of the antennœ as well as the bristle are covered 

 with fine hairs. 



The thorax is somewhat angular in front but rounded off behind. 

 Its three segments are very distinct. The pro- and meso-thorax which 

 are large in size and similar in color are marked with five dark longi- 

 tudinal bands. The space between every two of these bands is again 

 divided into two halves by a longitudinal row of stiff hairs. The meta- 

 thorax which is much smaller than the two preceding segments assumes 

 a hemispherical form, and has a few long stiff hairs scattered over its 

 surface and alonti: its hinder margin. It is further marked off from the 

 other two segments by its color which is reddish brown. The abdo- 

 men is composed of six segments, four of which are apparent, while tlie 

 other two are modified into a protrusible organ which ordinarily remains 

 retracted in the abdomen (PL I, fig. 10). Of the two, the proximal 

 one is chitinous and the distal membranous. The abdomen is thickly 

 covered all over with stiff hairs and has on the junctions of its segments 

 a few long bristles. In addition to the difterence in size of the two 

 sexes mentioned above, a marked difiference also exists in the form and 

 appearance of the abdomen. On one hand, the abdomen of the male is 

 almost triangular in outline and is ornamented on each side with a 

 large semi-circular dark brown patch. The abdomen of the female, on 

 tht; other hand, has an almost oval figure and is destitute of the 

 patches. 



The mouth parts ( PI. I, figs. 5,6,7) art so modified as to form a tube- 

 like proboscis, wdaich is divided into two portions — the basi-proboscis 

 {A)and the proboscis proper (ß). The basi-proboscis is composed main- 

 ly of a pharynx (ft) which is converted into a tubular body. At its pos- 

 terior end there arise two pairs of processes directed backward: — one 

 pair (I) on the upper, and the other (in) on the lower edge. Each of 



