158 E. T. Atkinson — Notes on Indian Rliyncliota. [No. 2, 



extended beyond the middle of tlie 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. Cosmojpsaltria : genae without a tubercle : rostrum extendino* be- 

 yond the base at least and very often beyond the apex of the last pair of 

 coxae : the opercula 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. Fomjponia : genae without a tubercle : rostrum and frons as in 

 Oosmopsaltria : opercula short, somewhat transverse. 



II. Cicada 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 (Emathia) equally broad towards 

 apex and base : (4) the ulnar veins distinctly (often very) distant at the 

 base. 



1. Cryptotympana : 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 : raetasternum elevated in 

 the middle and furnished with a posterior process turning backwards. 



2. Cicada : as in Cryptotympana, but the metasternr.m 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. Cicadatra : 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 coxae : first pair of femora spinose. 



III. TiBiCEN 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. 



