216 Zoological Society. 
back of the second joint forming a tuft before the apex. First joint 
short, subcylindric, curved, stoutest at the base. Second joint three 
times the length of the first, subcylindric, slightly curved at the base, 
incrassated towards the apex, which is truncate. Third joint slen- 
derer than the second, about half its length, nearly cylindric, obtuse 
at the apex. Eyes nearly round, not very prominent, smooth. An- 
tenne less than two-thirds the length of the body, slender, grooved 
below, thickening gradually into a slender obtuse club. 
Thorax moderately stout. Anterior wings subtriangular ; the an- 
terior margin slightly arched, the outer nearly straight, three-fifths 
the length of the anterior; inner margin nearly straight, four-fifths 
the length of the anterior. Costal nervule swollen at its origin, ter- 
minating beyond the middle of the anterior margin; subcostal ner- 
vure rather slender, throwing off its first nervule at a short distance 
before, its second immediately before the end of the cell, the third at 
a point about as far beyond the end of the cell as the origin of the 
first is before it, its fourth about as far beyond the third as the origin 
of this last is distant from the origin of the second. Fourth sub- 
costal nervule terminating at the apex of the wing: upper disco- 
cellular nervule very short ; middle and lower disco-cellular nervules 
about equal, the former curved inwards, the latter outwards ; a rudi- 
mentary discoidal nervule extending inwards from the middle disco- 
cellular nervule: median nervure swollen at its base, its third nervule 
bent at a considerable angle where it is joined by the lower disco- 
cellular: submedian nervure stout, curved near the base: internal 
nervure wanting. Posterior wings obovate, produced into a short 
tail at the anal angle; the anterior margin nearly straight, the outer 
much curved; the abdominal fold ample. Precostal nervule stout, 
curved inwards: costal nervure rather stout, curved at its origin: 
subcostal nervure rather stout, bent at a considerable angle where 
the costal separates from it; its second nervule angular where the 
straight upper disco-cellular nervule anastomoses with it. Discoidal 
nervule extending into the cell: lower disco-cellular nervule straight, 
longer than the upper, anastomosing with the discoidal nervure a long 
way beyond the anastomosis of the upper disco-cellular. Third me- 
dian nervule bent at nearly a right angle where the lower disco- 
cellular anastomoses with it. Anterior legs of the male slender, 
thinly clothed with scales and long delicate hairs; the femur rather 
shorter than the tibia; the tarsus little more than two-thirds the’ 
length of the tibia, one-jointed, nearly cylindric. Anterior legs of 
the female rather slender, clothed with scales and a few long fine 
hairs. Femur and tibia of about equal length, the latter nearly cy- 
lindric ; the apex slightly stoutest, thinly spiny both within and with- 
out. Tarsus shorter than the tibia, five-joited, the first joint more 
than twice the length of the rest combined; these all transverse : 
first to fourth bispinose at the apex; second and fifth with a tuft of 
hair on each side at the base. Middle and posterior feet with the 
femora rather stout ; the tibie very spiny all round, their spurs stout ; 
the tarsi densely spiny above, and, except the fifth joint, spiny below ; 
the spines below arranged somewhat in two series, the first joint longer 
than the rest combined, second about one-third the length of the 
