Genera of Wingless Brachyderine, 27 
margin of the prosternum, and the remarkable structure of 
the first ventral segment of the ¢@. 
Described from 2 ¢ g andl 9. 
Cychrotonus decoratus, sp. 0 
3 ¢. Black or piceous, with inconspicuous and easily 
abraded dark sealing on the disk of the elytra, and with the 
following inarkings formed of pale metallic-green scales :— 
A stripe “along the inner edge of each eye “and the whole 
side of the head and rostrum ; a narrow median stripe on 
the prothorax, a broader lateral one behind the eye, and 
another above the coxa; elytra with a stripe on interval | 
from behind the seutellum to about the middle, a short 
humeral stripe on 7 from the base to about one-third, 
complete marginal stripe reaching stria 9, but broader at 
the apex and emitting at the middle a more or less dentate 
broad oblique band, which reaches the suture at the top of 
the declivity and is united by a sutural stripe to the apical 
patch ; a very short isolated stripe at the apex of interval 5, 
aud occasionally a still shorter one at the apex of 7; in the 
? only there is a round spot at the middle of interval'3 and 
a trace of another on 5. ‘The lower surface rather thinly 
cloihed with pale greenish scales. 
Head with strong, longitudinally confluent puuctation, a 
deeply impressed line along the inner margin of the eye, and 
a large central fovea; eves “rather less prominent than usual, 
deepest in the middle. Rostrum a little longer than broad 
(7:6), parallel-sided, almost flat on the disk, coarsely and 
confluently punctate, with a low smooth median costa (rather 
broader and flatter in the 9 ) which widens anteriorly, a low 
punctate costa forming the margin of the dorsal area, and 
beneath it a longitudinal impression in front of the eye. An- 
tenne with the two basal joints of the funicle equal, joints 8-7 
subequal and about as long as broad, the first jot of the 
club narrow and subeylindrical i in its basal half. Prothorax 
about as long as the apical width, the sides subparallel from 
the base to Ate middle, then gradually narrowed to the apex, 
the apical margin broadly sinuate (as seen from above) 
owing to a marked thickening behind the eye, the base very 
shallowly bisinuate, the longitudinal outline nearly flat ; the 
upper surface with close Shallow punctures of varying sizes, 
each filled with a, flat scale, the median line often very 
shallowly impressed in the basal half. H/ytra narrowly 
