158 E. T. Atkinson—Notes on Indian Rhynchota. [No. 2, 
extended beyond the middle of the venter. The frons is large, very 
convex and near the base is almost twice as broad as the anterior margin 
of the lobes of the vertex. 
3. Cosmopsaltria : genee without a tubercle: rostrum extending be- 
yond the base at least and very often beyond the apex of the last pair of 
cox: theopercula are long and extended behind the middle of the 
venter. The frons near the base is not or only somewhat broader than 
the apical margin of the lobes of the vertex. 
4. Pomponia: gene without a tubercle: rostrum and frons as in 
Cosmopsaltria : opercula short, somewhat transverse. 
II. Cicapa group. A as above. 
B. (1) The lateral margins of the thorax always without a distinct 
tooth: (2) basal cell of tegmina rarely (Cicadatra) twice longer than 
broad, very often broad: (3) the interior ulnar area gradually distinctly 
amplified towards the apex, seldom (Hmathia) equally broad towards 
apex and base: (4) the ulnar veins distinctly (often very) distant at the 
base. 
1. Oryptotympana: first apical area extended more forwards than 
the second: the transverse vein closing the base of the second apical 
area, very oblique: the space lying between the postcostal marginal vein 
and the postcostal ulnar ramus linear and not broader towards the 
apex: the basal cell of the tegmina somewhat (but rarely twice) 
longer than broad: tympana entirely hidden: metasternum elevated in 
the middle and furnished with a posterior process turning backwards. 
2. Cicada: as in Cryptotympana, but the metasternum is not or is 
only a little elevated in the middle and there is no posterior process. 
The clypeus is truncated at the apex or somewhat sinuately truncated. 
3. Oicadatra: as in Cicada, but the basal cell of the tegmina is 
twice longer than broad and the tympana are partly visible. The cly- 
peus too is somewhat acuminated or a little rounded at the apex. 
4. Emathia : the first and second apical areas are extended to an 
equal distance forwards, the second is, however, longer than the first, the 
interior basal angle of the first area and the exterior basal angle of the 
second area are both obtuse: the interior ulnar area is not amplified 
towards the apex of the tegmina and is equally broad at base and apex : 
the thorax anteriorly is scarcely narrower than the head and is amplified at 
the base: the tympana are for a great part visible : opercula short : rostrum 
scarcely reaching the last pair of coxee: first pair of femora spinose. 
III. Treicen group. 
Tympana entirely visible; the anterior margin of the sides of the 
posterior part of the first dorsal segment of the abdomen is not produced 
and does not send out forwards a lobe. 
ae 
