Genera of Wingless Brachyderina. 19 
and almost continuous with that of the prothorax, the 
lateral areas very sharply inflexed and without any humeral 
prominence ; the surface very even and scarcely striate. 
Slernum with the gular margin sinuate, the cox in the 
middle of the prosternum, and the centro-sternite not tuber- 
cular ; mesepisternum not transversely impressed at the 
base and separated from the elytrou by the mesepimeron: 
metasternum between the cox much shorter than the mid- 
coxe, and with no transverse fold in front of the hind cox, 
the metepisternum continuously narrowed behind almost to 
a point, its base not produced internally, and the dividing 
suture complete ; hind cox extremely narrowly separated 
from the elytra. Venter with the intercoxal process dis- 
tinctly narrower than the hind cox, and its margin gently 
rounded ; hind margin of segment 1 very shallowly sinuate, 
segment 2 longer than 3 or 4. Legs short; the corbels of 
the hind tibise oblique, squamose, and narrowly enclosed 
at the extreme apex, the external fringe of setz shortly 
ascending the dorsal edge of the tibia ; tarsal claws connate. 
There are no marked external sexual characters ; the 
first ventral segment of the gis shallowly impressed, and 
the last one shorter than in the ?. 
Genotype, Leurops cana, sp. n. 
The absence of the transverse stria separating the rostrum 
from the forehead and the comparatively slight convexity of 
the eyes, combined with the oblique squamose corbels of the 
hind tibise, will readily distinguisa the species of this genus 
from their allies. 
Leurops cana, sp.n. (PI. I, fig. 1.) 
d ?. Colour black, the legs black to piceous; the last 
tarsal joint, antenue, mentum, and part of the mandibles 
dark testaceous. The scaling dense, ash-grey above and 
below, sometimes with an admixture of pale brownish scales 
above, forming a very faint, broad, central stripe on the 
pronotum and some broken lines on the elytra; the latter 
u-ually with traces of a whitish spot about the middie of 
interval 5 and another behind it on interval 3. 
flead quite smooth, the fine close punctation almost 
entirely hidden by the scaling and the short, broad, back- 
wardly recumbent sete; eyes very short-oval (3:28). 
Rostrum a little shorter than its basal width, almost flat 
above, with a shallow central impression in the anterior 
half containing an indistinct longitudinal carina ; the upper 
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