272 The Philippine Journal of Science 1921 
C+Sc entad and occupying about half of cell formed by C+Sc, 
R+M+Cu, and R; a dark brown, diffuse spot on anal vein near 
distal end of clavus, another near primary fork of R+M+Cu; 
a brown, subtriangular spot adjoining anal margin between 
branches of media and another between branch of media and 
cubitus. Body and appendages sparsely covered with rather 
long hairs. 
Head slightly narrower than thorax, not deflected. Vertex 
nearly as long as wide, very slightly concave at caudal margin ; 
cephalic margin somewhat produced laterad into a prominent, 
abrupt protuberance near base of antennal tubercle; lateral 
margins slightly raised above level of eyes; one rather deep, 
narrowly subelliptical, longitudinal fovea on each side of vertex 
between median suture and lateral margin. Genae slightly swol- 
len, abruptly produced cephalad beyond margin of vertex. 
Frons visible ventrad to anterior ocellus as an elongate sclerite, 
about three and a half times as long as wide, slightly narrower 
dorsad, rounded at dorsal end. Clypeus about one and two- 
thirds times as wide as frons, about one and one-fifth times as 
long as wide, about twice wider distad than proximad. Eyes 
subhemispherical, slightly thicker than distance from lateral 
margin to median suture of vertex. Anterior ocellus subhemi- 
spherical, not prominent. Posterior ocelli subequal in size to 
anterior, slightly elevated. Antennae about one and three-fifths 
times as long as width of head including eyes ; segments I and II 
subequal in thickness, three times as thick as III, both segments 
with ventral portions of apex produced. 
Thorax robust, not strongly arched, about as thick as long, 
about six-sevenths as wide as thick. Pronotum short, about 
one-ninth as long as vertex, about fourteen times as wide as 
long. Mesopraescutum about six times as long as pronotum, 
about one and a half times as wide as long, deflected cephalad at 
an angle of about 45°. Mesoscutum subequal in length to 
mesopraescutum, about three times as wide as long. Meso- 
scutellum about half as long as mesoscutum, almost truncate at 
cephalic margin. Forewings hyaline, costal margin subparallel 
to anal; apex almost truncate, rounded toward costal margin, 
somewhat angular toward anal; pterostigma wanting; radial 
sector broadly arcuate; cubital petiole wanting; cubitus not 
forked. Hind wings about one-fifth as long as fore, cleft from 
apex to near base, giving wings a biramous appearance, dark 
brown along costal margin and base. Hind legs excluding coxae 
about five-sixths as long as body, five abrupt, rather stout spines 
