76 H. T. Atkinson—Notes on Indian Rhynchota. [No. 2, 
IX.—Notes on Indian Rhynchota, No. 3.—By E. T. Arxryson, B. A. 
[Received June 15th ;—Read July Ist, 1885.] 
[The notes are taken as far as possible from the original descrip- 
tions, most of which are practically unprocurable by observers in India, 
or from Stal, Signoret, Butler, or Distant &c. where these authors have 
redescribed a species : the measurements of specimens not in the Indian 
Museum have been converted into millimetres from the recorded mea- 
surements of the several authors. | 
The insects belonging to this section have been so little worked 
in India that the collector may feel sure of a rich harvest of new species. 
At the same time, we may take warning from the confusion in the 
results of the investigations into the European forms how very necessary 
it is, from the similarity in appearance and small size of the great 
majority of the species, to use the microscope more freely than has 
apparently hitherto been the practice in ascertaining the generic charac- 
ters. We must wait some time before we can usefully attempt to 
do more than collect, compare, and fix the locality for the new forms of 
Membracide and Jasside which exist in such profusion in this country. 
In the meantime, these notes summarising what has been done in, as near 
as possible, the words of the authors, is a contribution to the work. 
Family Mempracipa, Stal. 
Subfam. Membracida, Stal, Hem. Afric. iv. p. 83 (1866): Fieber, Rey. Mag. 
Zool. (8 sér.) iii. p. 332 (1875). 
Subfamily Cuntrotina, Stal. 
Centrotida, Stal, Hem. Afric. iv. p. 83: Ofvers. K. V.-A. Forh. p. 280 §(1869) : 
Centrotina, ibid. p. 727 (1870). 
Scutellum distinct, produced backwards behind the metanotum, 
very often sinuated at the apex and furnished with acute apical angles. 
The scutellum is wanting in Oxyrhachis, which in Hem. Afric. iv. p. 84 
(1866) is placed by Stalin his subfamily Membracida (Membracina), 
and in Ofvers. Kong. Vet. Aka. Foérh. p. 280 (1869) in his subfamily 
Centrotida (Centrotina): in Hem. Fabr. 1. p. 47 (1869), it is again 
transferred to Membracina. 
Genus OxyrHacuis, Germar. 
Silbermann’s Rev. Ent. iii. p. 232 (1835) : Fairmaire, A. S. E. F. (2 sér.) iv. p. 
267 (1846) ; Stal, Hem. Afric. iv. p. 84 (1866) ; Ofvers. K. V.-A. Férh, p. 280 (1869) ; 
Fieber, Rev. Mag. Zool. (8 sé.) iii. p. 3383 (1875). 
Head perpendicular, frons a little elevated: thorax cornuted 
above the lateral angles, horns three-cornered ; posterior process long, 
