Chap. X. 
ORTHOPTERA . 1 
353 
one of the Locustidae) is described 28 as mounting on the 
upper branches of a tree, and in the evening beginning 
“ his noisy babble, while rival notes issue from the neigh- 
“ bouring trees, and the groves resound with the call of 
“ Katy-did-she-did , the live-long night.” Mr. Bates, in 
speaking of the European field-cricket (one of the Ache- 
tidae), says, “ the male has been observed to place itself 
“ in the evening at the entrance of its burrow, and 
“ stridulate until a female approaches, when the louder 
“ notes are succeeded by a more subdued tone, whilst 
“ the successful musician caresses with his antennae 
“the mate he has won.” 29 
Dr. Scudder was able to 
— x r 
excite one of these insects 
to answer him, by rubbing 
on a file with a qirill. 30 
mWm 
17=%1 
In both sexes a remark- 
ww Ml 
ft/N 
able auditory apparatus 
has been discovered by 
Yon Siebold, situated in 
the front legs. 31 
In the three Families 
-it 
the sounds are differently Fig. 10. Gryllus campestris (from Landois). 
produced. In the males of Right-hand figure, under side of part of the 
L wing-nervure, much magnified, showing 
the Achetidae both wing- the teeth, si. 
° Left-hand figure, upper surface of wing-cover, 
covers have the same with the projecting, smooth nervure, r., 
. across which the teeth (st) are scraped. 
structure ; and this m the 
field-cricket ( Gryllus campestris, fig. 10) consists, as de- 
23 Harris, 4 Insects of New England/ 1842, p. 128. 
29 < The Naturalist on the Amazons/ vol. i. 1863, p. 252. Mr. Bates 
gives a very interesting discussion on the gradations in the musical 
apparatus of the three families. See also Westwood, ‘Modern Class/ 
vol. ii. p. 445 and 453. 
30 < p r oc. Boston Soc. of Nat. Hist/ vol. xi. April, 1868. 
31 4 Nouveau Manuel d’Anat. Comp/ (French translat.), tom. i. 1850 
p. 567. 
VOL. I. 2 A 
