134 
BRAZILIAN ORTHOPTERA 
section of the caudal femora, being lilack — will immediately 
distinguish it. Bruner’s recently described P. picipes,^^ from 
Quatro Ojos, Dejiartment of Santa Cruz, Bolivia, apparently 
differs from our species in its distinctly larger size, in the lack of 
color contrast on the head and pronotum, and doubtless other 
features not mentioned in the length}^, but inconclusive, descrip- 
tion of picipes. 
Type. — cf ; Bartica, British Guiana. March 24, 1913. 
(H. S. Parish.) [Acad. Nat. Sci. Phila., Type no. 5331.] 
Size small (for the genus) : form moderately depressed; .surface moderately 
velutinous. Head sub vertical, no wider than the extreme cephalic width of the 
j)ronotum, general form of the cephalic aspect of the head broad ovoid, nar- 
rowing ventrad: occijnit strongly declivent to the subvertical rostrum, which 
latter is much narrowed betw'een the antennae, its least width not half that of 
the proximal antennal joint, faintly sulcate: median ocellus not apparent; 
lateral ocelli large, subovate, placed at the caudal angle of the antennal scrobes 
and separated from the eyes by less than the short diameter of the ocelli: 
palpi short, the third joint faintly longer than the fourth, robust; fourth joint 
enlarging distad; fifth joint very broad and short, subconical, the distal 
margin subarcuate truncate, the extensor margin arcuate: eyes in basal out- 
line pyriform-ovoid, caudo-ventral margin slightly flattened, when seen from 
the dorsum the eyes are moderately prominent: antennae consideraldy sur- 
passing the body in length; the proximal joint large, depressed, dorsal face 
naked proximad and clothed with hairs distad and on the internal face. Pro- 
notum with the disk regularly expanding caudad, the caudal width of the same 
subequal to the median length; cephalic margin of the disk gently concave, 
caudal margin weakly bisinuate, mesad broadly but shallowly arcuate, all 
margins cingulate; pyriform impressions distinct; lateral lobes distinctly 
longitudinal, the ventral margin regularly arcuate, ventro-cephalic angle 
rather narrowly rounded, ventro-caudal angle broadly rounded; surface of 
the lobes with a dorso-median impressed area, another ventro-cephalad and a 
third close to the ventro-caudal angle. Tegmina surpassing the apex of the 
abdomen, also of the caudal femora by more than the length of the pronotum, 
the greatest width of the dorsal field contained three times in the length of the 
tegmina, lateral margins of the dorsal fields of the closed tegmina subparallel 
mesad: costal margin of the usual form found in the genus; marginal field in- 
creasing in width to the distal fourth; rnediastine vein with twelve sigmoid 
rami, the proximal section of the marginal field also with four free veins; 
humeral vein closely paralleling the rnediastine vein, distinctly obtuse-angulate 
at the distal fourth; discoidal vein straighter than the humeral vein mesad, 
arcuately approaching the same distad; median vein straight; stridulating 
vein strongly bisigmoid, the proximal bend practically V-shaped; axillary 
veins four in number, the third (from costal margin) most prominent; anal 
node prominent; oblique veins six in number, strongly sinuate oblique; 
Ann. Carneg. Mus., x, p. 422, (1916). 
