146 MB. E. P. STE13BlNa Oy THE 



The male larva is not yet known. The male pupal case ia 

 small, dark brown in colour, elliptical, but with a curious fan- 

 shaped flattened expanded portion at one end, rather like the 

 caudal appendage of a fish. This pupal case would appear to be 

 only tbe last larval chitinous covering, since the leg and antennal 

 cases are attached to it (Pi. 16. figs. 3 & 4). The pupal skin 

 ruptures at the anterior end — the male insect crawling out of 

 the elliptical opening thus produced. The length of the pupal 

 case is 4 to 4*2 mm. The perfect insect is a small black-winged 

 fly. Both sexes mature in April. Green describes the male 

 and female insects as follows : — 



" MonopJiJehus Stehhingi, Green. Indian Museum Notes, viii. 

 p. 100. 



"Adult 5 [PI. 16. figs. 5, 6]. Eobust. Margins somewhat 

 flattened and forming a distinct lateral keel ; median dorsal area 

 tumescent ; division of segments well-defined. Colour slaty- 

 grey, thickly dotted with white mealy powder. Legs and an- 

 tennse black. Margin with irregular fringe of longish black hair ; 

 the VAhole ventral surface covered with a short pubescence, 

 denser on the margin and iiitersegmental regions. Both dorsum 

 and ventral surface with numerous circular pores, some with 

 single, some witb double orifice, the orifices guarded by small 

 raised points. Antenna with eight joints : first seven subequal 

 in length, third sometimes longer, eighth longer than previous 

 two together; all the joints with many blackish hairs. Legs 

 stout, spiny : tarsus short, scarcely half the length of the tibia : 

 claw long and stout, with a pair of simple hair-like digitules. 

 Anal aperture on dorsum, at some distance from extremity, 

 surrounded by a group of stout hairs. Length of early adult 

 females (taken in coitio with the male) 8'50 mm. Breadth 

 4*50 mm. Older examples attain a considerably larger size. The 

 largest I have examined measures 13 mm. by 8'50 mm., and it 

 is possible that others may exceed these dimensions.* 



'* Adult d [PI. 16. fig. 7]. Dull red : notal and sternal plates 

 black : tbe whole body dusted with mealy powder, giving it a 

 pruinose appearance ; a lunate pale patch in the centre of the 

 mesonotum and a pale space between the mesonotal plates and 

 the scutellum. Legs and antennae black : wings fuscous, corru- 

 gated, with two white creases, one on eacb side of the discal 



* The writer has specimens in his possession of as much as 18'75 mm, and 

 bver. : 



