
















118 THE SONGS OF THE GRASSHOPPERS. 
the hind legs, rubbing their thighs against their wing-covers; l 
every movement of the fiddle-bow produces a short note, and — 
the uniformity with which each species plays its own song — 
is quite remarkable. One kind (Stenobothrus curtipennis) — 
produces about six notes per second, and continues them — 
from one and a half to two and a half seconds; another a 
(S. melanoplewus) makes from nine to- twelve notes in — 
about three seconds. In both cases the notes follow each — 
other uniformly, and are slower in the shade than in the 4 
un. : 
The stridulating apparatus of the jumping grasshoppers is _ 
of a very different character from that of the green grasshop; — 
Fig.3a. pers. In Arcyptera lineata (Fig. 3, pig's, i 
left wing of male; Fig. 3a, left wing 
of female), for example, it is situated 
in the central field of the wing, 
which is of about the same size in | 
both sexes; some of the veins in the 
centre of the wing (a, enlarged in f 
_ Fig. 36) have a rasp-like surface | 
| upon which the hind thighs are | 
scraped up and down, producing mo- 
notonous, nearly uniform notes. 
The grasshoppers which stridulate 
during, flight, by the contact of the wings and wing- 
covers, belong mostly to the genus @dipoda; in many 
of them the wings are variegated with brilliant colors. 1 
sound which they make seems to be under the control of 





EAN 
Aa 
Toa 

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asa 

<=. TORN = 
SSNS Ss 
—— 

norisa 
a ar BP a 

i 
f 


—_——— 

of the latter is more sustained, they are capable of chang ing 
their course, and at each turn emit a crackling sound 
short duration. 
