DEVELOPMENT OF HOPPERS 15 
FIFTH INSTAR. (PLATE II, FIG. 6.) 
Length of body Os ...22 —25°5 mm. 
Length of antennze eh o—10 ve 
Remaber of segments in itenaes . 1d —17 
Colour variations as in previous instar. 
Those nymphs which in the previous instar showed the more ad- 
vanced development now show the elytral bud grown backward almost 
or quite to the posterior border of the metathorax (see Plate II, Fig. 6 
and Plate VIII, Fig. 6). The metathoracic bud shows no appreciable 
change. Those nymphs which showed the more belated development 
now correspond in wing bud development to the more adyanced group 
of the previous instar, 
For those nymphs showing advanced development this is the last 
nymphal instar. With the following moult they assume the adult 
form. 
SIXTH INSTAR. 
Length of body... shee ... 264—29 mm. 
Length of antennz awe 95-—11 _,, 
Number of segments to antennas 2 he le 
Little need be added to the description for the fifth instar as the 
nymphs in the sixth instar only reproduce in general the structure 
noted for the more advanced forms in the previous instar, the only 
difference being the greater size. 
From the above description, it will be seen that the 
Jola Grasshopper passes normally through either five or 
six instars. Apparently about half the grasshoppers 
undergo the more rapid development. 
Specimens collected in the field show very great 
variation in size. The measurements published by Boli- 
var and myself were taken from comparatively large 
specimens. Males have since been collected in the field 
varying from 23 mm. to 40 mm. in length while females 
have been found varying from 25 mm. to 40mm. The 
females are much stouter than the males and on the 
average decidedly longer. Reared specimens have not 
attained the extreme size of those captured, the males 
varying from 26 mm. to 34 mm. and the females from 30 
mm. to 34 mm. It is very probable that the conditions in 
confinement were not favourable for growth. The small 
specimens taken in the field were found in one or two 
localities only, and it appears likely that here also the food 
supply was insufficient or other conditions were not so 
