Chap. X. 



ORTHOPTERA. 



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 

 excite one of these insects 

 to answer him, by rubbing 

 on a file with a quill. 30 

 In both sexes a remark- 

 able auditory apparatus 

 has been discovered by 

 Von Siebold, situated in 

 the front legs. 31 



In the three Families 



the SOUnds are differently Fig. 10. Gryllus campestris (from Landois). 



•nrnrlnnprl Tn tllP TYIfllpS of Right-band figure, under side of part of the 

 prOUUCea. ±U Uie Illdieb Ul wing-nervure, much magnified, showing 



the Achetidae both wing 



the teeth, st. 

 Left-band figure, upper surface of wing-cover, 

 with the projecting, smooth nervure, r., 

 across which the teeth (si) are scraped. 



covers have the same 

 structure ; and this in the 

 field-cricket (Gryllus campestris, fig. 10) consists, as de 



23 Harris, 'Insects of New England,' 1842, p. 128. 



29 « xhe 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 'Proc. Boston Soc. of Nat. Hist.' vol. xi. April, 18G8. 



31 ' Nouveau Manuel d'Anat. Comp.' (French translat.), torn. i. 1850 

 p. 567. 



VOL. I. 2 A 



