roo Indian Museum Notes. [ Vol. V. 



to be an immature female of M. leachii, with 7-jointed antennae: 

 but, as suggested by Maskell, this may very possibly have really been 

 an adult. It is evident that the characters of the female Monophlebus 

 have been taken too much on trust. No female Monophlebus has as 

 yet been described having more than 9 joints in the antennae. I am 

 now able to describe the females of two new species., in which the 

 sexually adult insects have 8-jointed antennas. They were both 

 found by Mr. E. P. Stebbing, Entomologist to the Imperial School of 

 Forestry, Dehra Dun, North-Western Provinces. I have much plea- 

 sure in naming one of them after its discoverer. 



Monophlebus Stebbingi, sp. nov. 



Adult ? (pi. xx, fig. 5) robust. Margin somewhat flattened and 

 forming a distinct lateral keel. Median dorsal area tumescent : divi- 

 sions of segments well denned. Colour, slaty-gray, thickly dusted 

 with white mealy powder. Legs and antennse black. Margin with 

 irregular fringe of longish black hairs : the whole ventral surface 

 covered with a short pubescence, denser on. the margins and inter- 

 segmental regions. Both dorsum and ventral surface with numerous 

 circular pores, some with single, some with double orifice (fig. 5, a), 

 the orifices guarded by small raised points. Antenna (fig. 5, b.) with 

 8 joints : first seven subequal in length, 3rd sometimes longer : 8th 

 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 digi- 

 tizes. Anal aperture on dorsum, at some distance from extremity, 

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

 (taken in coitu 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 S (fig. 5, c.) dull red : notal and sternal plates black : 

 the whole body dusted with mealy powder, giving it a pruinose 

 appearance : a lunate pale patch in the centre of mesonotum and a 

 pale space between the mesonotal plates and the scutellum. Legs 

 and antennae black : wings fuscous, corrugated, with two white 

 creases, one on each side of the discal nervure. Halteres with 5 

 stout hooked bristles at extremity. Antenna io-jointed : 3rd to 9th 

 each with three nodes, 10th with four nodes : each node with a whorl 

 of long hairs. Eyes large, compound : a single ocellus on the dorsal 



