180 N. E. McINDOO 
deaf and dumb, but her mate is only deaf, his sonorous sound- 
producing organ being found in the abdomen. ‘Happy is the 
cicada, since its wife has no voice,’ says Xenarchos, could just 
as well be said about the males of crickets, grasshoppers, and 
katydids. Graber, after cutting off the front tibiae of crickets 
and katydids, found that they responded as well to a violin and 
to their chirping and singing as before the operation. 
Stridulation, special sound-producing apparatus, and various 
types of supposed auditory organs have. been described in true 
bugs, moths and butterflies, flies and mosquitoes, beetles, and 
ants, and also in a few larvae and pupae, yet we know very little 
about this subject. 
SO-CALLED AUDITORY ORGANS OF INSECTS 
Since insects have special sound-producing organs, it is natural 
to suppose that they also have auditory organs. The so-called 
auditory organs of Orthoptera and of certain other insects, 
mentioned above, need not be further discussed here, because 
Comstock (’20, pp. 145-154) has recently given a good summary 
on this subject. 
Supposed auditory organs of honey-bee 
In the following pages the descriptions of five supposed sound 
receptors are given, and Janet (’11) mentions a sixth one in the 
bee. From his brief description and drawing the details of this 
one cannot be interpreted. The following is all that Janet says 
about it: The chordotonal nerve departs from the antennal nerve 
a short distance from the brain, and runs toward the integument 
where it is inserted at a point beneath and a short distance from 
the articular edge of the antenna. From this point of insertion 
departs one end of a fusiform chordotonal ganglion, whose other 
end gives rise to a terminal cord which runs toward the articular 
membrane of the antenna, and is there inserted. The present 
writer has not studied this organ, but from the above brief de- 
scription he would eliminate it as a possible auditory organ. 
a. Structure of Johnston’s organ. Johnston (’55) pointed out 
a supposed auditory organ in the second antennal segment of the 
