CENTROTIN &. 
B. Pronotum with two moderately long and sharp lateral horns set 
at right angles to the shoulders . oe . . 
. Posterior process of the pronotum reaching beyond the middle of 
the body, and often extended almost to the apex of the tegmina. 
A. Pronotum with lateral supra-humeral horns. 
a. Posterior process of the pronotum not trifurcate at the apex. 
a*, Form more or less globose-elliptical, convex; posterior 
process of the pronotum long and stout, arcuate; supra- 
humeral horns variable, broad and blunt, often reduced to 
mere blunt curved prominences . 
b*, Form more or less oblong and narrowed to the apex, as a 
rule much broader in front than behind. 
at. Tegmina with not more than two discoidal areas. 
at. Outer discoidal area of the tegmina removed by the 
breadth of a whole area from the anterior margin ; 
five distinct and well-marked areas reaching the apex. 
aa. Outer discoidal area truncate and sessile at the base, 
more or less oblong, and, as a rule, not much 
smaller than the inner discoidal area, which is also 
oblong . . 2. 1. ee ee ee es 
bb. Outer discoidal area stylate, subtriangular, consi- 
derably smaller than the inner discoidal area, which, 
if present, is trapezoidal, but is sometimes wanting. 
bt. Outer discoidal area of the tegmina very small, touch- 
ing or almost touching the outer marginal vein ; inner 
discoidal area circular and depressed; four distinct 
apical areas only reaching the apex (if a fifth is pre- 
sent it is very minute and evidently abnormal) . 
6+. Tegmina with three discoidal areas. 
at. Posterior process of the pronotum triangular, broad 
at the base and gradually narrowed to a blunt point 
just beyond the middle of the body . 
bt. Posterior process of the pronotum long, slender, and 
parallel, reaching almost to the apex of the body . 
b. Posterior process of the pronotum dilated and trifurcate before 
the apex ; supra-humeral horns stout and serrate . 
B. Pronotum without lateral supra-humeral horns. 
a. Pronotum rounded in front, not produced into a porrect or 
raised process. | 
at. Posterior process of the pronotum simple, not trifurcate. 
at. Disc of the pronotum with a bluntly raised carina on 
each side; posterior process sinuate above the scu- 
tellum, and then slightly bent upwards in an almost 
straight point 
“147 
Spathocentrus, gen. nov. 
Spherocentrus, gen.nov. 
Campylocentrus, Stal. 
Boocerus, Stal. 
[nov. 
Gnamptocentrus, gen. 
Platycentrus, Stal. 
Centruchotdes, gen. nov. 
Smerdalea, gen. nov. 
Psilocentrus, gen. nov. 
*19 2 
