1(32 
BRAZILIAN ORTHOPTERA 
very slender; fourth joint al)out three-fifths as long as the third joint; fifth 
joint over half again as long as the third joint, subclavate distad. Pronotum 
with the dorsum subdeplanate, narrow, the greatest caudal width contained 
one and two-thirds times in the greatest length of the same, lateral margins of 
the disk narrowly rounded and but very faintly converging cephalad; cephalic 
margin of disk subtruncate, caudal margin of disk moderately arcuate; lateral 
lobes of pronotum faintly longer than deep; cephalic margin of lobes shallowly 
arcuato-emarginate, ventro-cephalic angle obtuse, ventral margin oblicpiely 
arcuate, ventro-caudal angle broadly rounding into the oblique, broadly 
arcuate caudal margin; humeral sinus decided, rotundato-rectangulate. 
Tegmina elongate, lanceolate, surpassing the apices of the caudal femora by 
slightly more than the length of the pronotal disk, greatest width contained 
about five and one-half times in the greatest length ; costal and sutural margins 
subparallel, the former briefly rounding distad to the rounded, but distinct, 
apex, which is practically median; sutural margin with a distinct distal arcua- 
tion to the apex: median vein diverging slightly proximad of the middle, 
bifurcate distinctly before its middle: areolation distinct and regular: tym- 
panal field relatively small and rather narrow, the free margin rounded ol^tuse- 
angulate at the apex of the stridulating vein. Wings surpassing the closed 
tegmina by a distance equal to three-fourths of the length of the pronotal 
disk, the apex of the closed wings rounded acute. Prosternum with an ele- 
vated V-shaped structure, but no spines ; mesosternal lobes rectangulate at the 
apices, the caudal margins well arcuate: metasternal lobes narrow, obtusely 
arcuate. Supra-anal plate elongate, linguiform trigonal, the distal portion 
very narrow, rounded at apex: cerci slightly longer than the pronotal disk, 
slender, subcompressed, antler-like; .when seen from the dorsum arcuate 
laterad in proximal section, passing to weakly arcuate to the medial line 
distad, the form in this view caliper-like; when seen from the side regular 
arcuate, with the convexity ventrad, the ramus diverging on the ventral surface . 
at distal third, and the same is as long as the distal third of the main shaft 
of the cercus, of similar shape and form, and with it making a V-shaped struc- 
ture, the immediate apex of the ramus briefly sigmoid hamate: subgenital 
plate broad, distinctly bicarinate, the carinae moderately diverging distad; 
free margin arcuate-emarginate distad, with distinct, subacute and sub- 
mammillate projections at the extremities of the carinae. Limbs slender: 
caudal femora moderately inflated j)roximad, slender distad, the ventro- 
lateral margin of the same with two to five spines. 
Coloration destroyed by immersion in licpiid preservative. Tympanal 
field of tegmina shows several areas of fuscous. 
Length of body (exclusive of cerci), 11.8 mm.®; length of pronotum, 3.5; 
greatest (caudal) width of pronotal disk 2.1; length of tegmen, 21; greatest 
width of tegmen, 3.7; length of caudal femur, 13.3; length of cercus, 4.3. 
The type is unique. 
® The body is much shrivelled and this measurement is undoubtedly less 
than the natural length. 
