38 H. C. EFFLATOUN. 



tbe basai corners whicli aie black ; its pubescencc is fairly al.iin- 

 dant, long and entircly yellow. 



Abdomen shining black with extensive orange markings; it 

 is about tbree times as long as its broadest part, which is usually 

 on tbe base of the fiftb segment, and is very club-shaped Jis it 

 narrows Irom its base to the middle of the third segment, after 

 which it rapidly widens to the fifth segment and spreads over 

 the very large genitalia; the second segment bas an orange band 

 which is usually well interrupted in the middle and which st;irts 

 from the side margins near the lower end of the segment, but 

 slopes upwards to the middle of the dise; sometimes this band is 

 continuous; on the third segment the band is much broader and 

 sometimes slightly inteiTupted in the middle, and is situated high- 

 er up than the middle of the segment, so that its upi>er margiu 

 is close to the base of the segment-, on the fourth segment the 

 band is very similar m shape to that on the previous one but 

 owing to the larger size of the segment the band is much longer 

 and larger; however, very often the increase of the yellow colour 

 makes the segment appear orange, except for two black elongate 

 spots near the lower margin and two others in the centre of the 

 segment, one of which, small and round, touches the base, and the 

 other more elongate is near the lower margin; on the fifth seg- 

 ment the black portion is reduced to two elongate blackish spots 

 near the basai c'orners and a fairly broad dorsal Une which ex- 

 tends from the base to about two-thirds of the segment and at_ the 

 end of which, on the sides, are two small, more or less distinct, 

 roundish spots. Pubescence on abdomen rather inconspicuous but 

 long erect and mostly pale about the basai corners and shorter, but 

 also pale, on the side margins; it is short, adpressed and blackish 

 on the dise. Venter orange and black and the black markings of 

 tlie abdomen, when secn from below, never quite reach the side 

 margins; iiubescence shorter and nuich less conspicuous than on 

 the dorsuni. Hypopygium vei-y large, asymmetrical and usually 

 orange wùth spots on" the sides which may either be distinct (three 

 small oncs on the Icft and one larger on the right) or practically 

 absent; the genitalia, which consist of a very large bail under 

 the fifth segment, are continued under the fourtïi by a pair of 

 large lamellse, which are rather hairy, especially at their apiees. 



Legs yellow to orange, quite simple in shape, with darkcr 

 places which are liable to excessive variations in différent indi- 

 viduals. The front pair of legs is usually entirely yellow or orange, 

 but the middle and" hind pairs vary considerably, as they may be 

 anything from orange with tiny black bristles on the tarsi, to al- 

 most cntirelv blackish with tinv vellow bristles on tlie tarsi; and 



