Descriptions of Indian Acridide. 507 
1.i11.1905; another male is from Waini, Durbhanga, 
Bengal, 11.iii. 1905 ; three females without locality. 
This is a very striking insect, which may be easily recog- 
nised by the numerous peculiar characters given above. The 
structure of the hind legs leaves no doubt that it can and 
does swim; the shape of the ovipositor, which is of the same 
type as in Chrysochraon or Oxya, suggests that Hygracris 
palustris laysits eggs in the stems of some plant, as Chryso- 
chraon does. Biological observations on this insect should 
be very interesting. 
EvurREPONQTUS, gen. nov. 
A member of the group Euprepocnemini, related to the 
genus Belonocnemis, Bol., though very distinct from it. 
¢. Antenne long, somewhat flattened and dilated in the 
middle, but very feebly. Face feebly reclinate. Lateral 
ocelli close to eyes, but distant from margins of fastigium 
and from base of antenne. Vertex feebly reclinate, fasti- 
gium prominent anteriorly, hexagonal, distinctly concave, 
the margins raised, smooth, cheeks below eyes with obtuse 
shining vertical keels. Pronotum almost cylindrical, feebly 
compressed laterally ; its disc slightly convex, more so on 
prozona; median keel low, obtuse, interrupted by three 
deep transverse sulci; lateral keels on prozona very obtuse, 
smooth, deeply cut by three sulci, on metazona undeveloped 
altogether; metazona distinctly shorter than prozona, very 
obtusely rounded behind ; lateral lobes transversely convex, 
very deeply cut by transverse sulci, the first of which runs 
obliquely towards the fore margin, while the second and 
third are almost straight and vertical, connected with each 
other by an oblique longitudinal sulcus just below the 
middle; a sublateral longitudinal keel, obtuse and shining, 
is to be seen between the two hind sulci. Prosternal spine 
cylindrical, slightly inclined backwards, with the apex 
obtuse. Mesosternal lobes about as long as broad, with 
inner and hind margins straight; interspace distinctly 
narrower than one of the lobes, slightly broadened behind. 
Metasternal lobes not separated. LElytra and wings fully 
developed. Hind femora distinctly incrassate basally, with 
apical part attenuate; upper carina serrulate. Hind tibie 
with ten spines on both sides, without an outer apical spine ; 
spurs subequal in length to each other. Hind tarsi almost 
as long as half the tibia; second joint subequal to one- 
third of the first joint, distinctly longer than broad. Pulvilli 
large, rounded. Abdomen cylindrical, with the two apical 
segments strongly inflated. Cerci large, foliaceous, widely 
