THE TETTIGrIDiE OF CEYLON. 
149 
Key to Species of Hedotettix. 
A. —Facial frontal costa widely silicate, the rami more or less 
abruptly widened between the eyes; crown of head in profile 
distinctly elevated above the eyes. 
gracilis , de Hann. 
B. —Pronotum and wings abbreviated, median carina of pronotum 
sloping backward. 
gracilis abortus, Hanc. 
AA.—Facial frontal costa moderately or narrowly sulcate, not 
abruptly widened between the eyes; crown of head not at all 
or barely elevated above the eyes ; antero-dorsal margin of 
pronotum truncate. 
attenuatus , Hanc. 
23.— Hedotettix gracilis , De Hann. 
Plate III., fig's. 19-19&. 
Body moderately slender somewhat smooth, finely rugulose 
granulate. Crown of head convex, little elevated above the eyes 
forming with the frontal costa a rounded profile. Vertex viewed 
from above scarcely wider than one of the eyes in female or 
subequal in male, front margin obtuse angulate, barely advanced 
beyond the eyes, laterally the carinulse rounded abbreviate, side 
margins strongly sinuate, middle carinate, distinctly produced. 
Frontal costa strongly rounded, advanced before the eyes equal to 
about one-third their diameter, viewed in front widely sulcate, 
the rami rather suddenly widened between the eyes and little 
narrowed below the point of insertion of the antennae. Posterior 
ocelli conspicuous just in advance and barely above the middle of 
the eyes ; eyes in profile subconoid globose. Antennae rather 
short filiform, inserted scarcely above the level of the lower margin 
of eyes. Pronotum with the antero-dorsal margin obtuse angulate 
posteriorly more or less long acute subulate, passing the posterior 
femoral knees ; dorsum between the shoulders elevated tectiform ; 
between the sulci anteriorly little compressed ; humeral angles 
obtuse; median carina of pronotum percurrent little compresso- 
elevated, longitudinally arcuate anteriorly, straight posteriorly ; 
between the shoulders provided with thin indistinct abbreviated 
rugula on each side; anterior prozonal carinae distinct, straight; 
infra-scapular area above the elytra long narrow sulcate, the 
scapular area indistinctly present ; superior or elytral sinus of 
lateral lobes moderately deep ; the inferior sinus deeply angularly 
incised ; posterior angle turned downward subacute, the margin 
very slightl y outwardly elevated. Elytra oblong, the apical margin 
rounded ; wings fully developed, passing backward beyond the 
