ACRTDIIDiE. 
81 
ProscopUnce (American). 
Tryxalince. —The face looking down, the vertex of the head pro¬ 
duced forward forming an angle. Prosternum unarmed. 
Oedipodince. —The face looking forward, vertex rounded. Pros¬ 
ternum unarmed. 
Pyrgomorphince. —Pace looking downwards, prosternum with an 
elevated lamina. 
Pamphagince. —(Europe, Africa and E. Asia). 
Acridiince. —Face looking forwards, prosternum with a tooth-like 
process. 
The classification is best studied in the works of Brunner, de Saus- 
sure and Bolivar. The Tetrigince are recognizable at sight ; the Acri¬ 
diince and Pyrgomorphince are clearly distinct, the Tryxalince and 
Oedipodince are not always easily distinguished as the characters are 
not universal in both sub-families. 
Tetrigince (Tettigides). —Small insects, of a dark-brown colour, 
found upon the soil and in grasslands. There are a considerable number 
of species which are not easy to distinguish. The sub-family as a whole 
are sharply marked off from the remainder of the family. Most are 
roughened and warty above, as are the Chrotogoni , and this with their 
colouring renders them difficult to see on the soil. Some are leaf-like 
and live among dead leaves ; all are bizarre in appearance and superfi¬ 
cially resemble Membracids. They are most abundant on damp soil and 
near water; some are aquatic and have the hind tarsi more or less 
expanded to serve for swimming; at least one species in India is 
aquatic, feeding on vegetation at or below the surface. 
Hancock lists a total of 434 species from all parts of the world, with 
34 Indian species. Scelimena (fig. 21) is a semi-aquatic genus with 
three Indian species, S. producta, Serv.; S. harpago, Serv. and S. unci- 
nata , Serv. Criotettix has five Indian species; in this genus the inser¬ 
tion of the antennee is on a level with the lower part of the eye, in the 
former below the eye. Acanthalobus has three species. Mazarredia is 
an Oriental genus with four species in India. Paratettix has two Indian, 
two Burmese species ; Coptotettix has four Burmah species, and Saussn- 
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