340 
BRAZILIAN ORTHOPTERA 
long as the body (their condition incomplete). Pronotum transverse, flattened 
elliptical, the greatest length contained about one and two-fifths times in the 
greatest width; cephalic margin very broadly and shallowly obtuse-angulate, 
the immediate angle broadly rounded; caudal margin similar but more arcuate 
and with a faint median flattening; latero-cephalic angles rounded, latero- 
caudal angles rounded obtuse; lateral margins strongly and regularly arcuate: 
disk with a weakly impressed pattern; broad lateral and narrow caudal sections 
semi-transparent, the former well separated from the disk by distinct breaks 
in the contour of the pronotum: entire margin finely cingulate. Tegmina 
elongate, very narrowly lanceolate, nearly four times as long as the greatest 
width: costal margin strongly arcuate pro.ximad, thence very faintly and quite 
regularly truncato-arcuate to the acute apex; sutural margin straight, becoming 
arcuate in distal third : marginal field of medium width, well-defined, reaching 
to the proximal two-fifths; scapular field broad, at its widest point hardly 
inferior to the width of the discoidal field; anal field pyriform, reaching to the 
proximal third of the tegmen: venation distinct, coarse, well etched into relief; 
costal veins eighteen in number, oblique, irregular distad, the intercalated 
veins of scapular field decided and regularly placed; median vein in greater 
part subparaUel to the discoidal vein, sinuate in form, with six oblique rami 
toward the sutural margin; ulnar vein bifurcate distad; whole of the discoidal 
field with numerous, closely placed and strongly marked cross-veins, which 
give a rectangulate or rarely quadrate form to the cells; anal sulcus well indi- 
cated, distmctly arcuate proximad, thence straight oblique, faintly arcuate at 
its junction with the sutural margin; axillary veins five in number, well-defined, 
with but indistinct cross-veins. Wings falling but slightly short of the teg- 
minal apices; costal margin in greater part gentty arcuate: intercalated triangle 
relatively large, its greatest length equal to about one-third that of the re- 
mainder of the wing: costal veins sixteen in number, the proximal eleven 
thickened distad and weakly elongate clavate; discoidal vein in general straight; 
medio-discoidal area rather broad, appreciably wider than the medio-ulnar 
area, cross-veins fifteen in number, the cells varying from very narrow spaces 
to elongate rectangles; median vein very faintly arcuate, simple, medio- 
ulnar area with about six faint cross- veins, irregularly placed distad; ulnar 
vein heavy and straight, furcate distad, the main trunk there sending three 
weak cross-veins toward the anal vein. Abdomen narrowed distad: disto- 
dorsal abdominal segment transverse, the free margin moderately arcuate; cerci 
large, coarsely jointed, tapering, strongly depressed, sparsely hirsute; sub- 
genital plate of the usual Chorisoneura type, the free margin unsymmetrical, 
from the sinistral side showing the following: a strong proximal rotundate 
acute-angulate shoulder, a rounded but not deep emargination, a median sinu- 
ate and slightly oblique truncation, a more pronounced, though narrow, arcu- 
ate emargination and lastly a short bisinuate section; styles of the usual large, 
acuminate, sublammellate type found in this genus, ventral surface of same 
deeply channelled. Cephalic femora with the ventro-cephalic margin bearing 
a closel}^ set series of setiform spinules distad; median and caudal femora with 
the ventral margin having few scattered spinules; ventro-cephalic margin of 
cephalic femora with a large distal spine, both ventral margins of median and 
caudal femora with similar, but smaller, single distal spines: aroha large. 
