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96 PEL‘Ad E EXXH. 
And it is no lefs diftinguifhed for the very fingular ftru&ture and 
length of its antenne, than for its rarity; that part which forms one 
of the mof certain charaéteriftics of almoft every tribe - Infecis, 
conftitutes the moft prominent charaéter in this, 
Of its ufe, we are altogether ignorant, as the various opinions 
that have been given by Fs writers are now obliterated; fome 
have _— that they were the organs of hearing, or fmell; and 
others have imagined that they were fufceptible of the leaft motion in 
the esbicat fluid in which they move. 
Geoffroy difeovered the organs of hearing in feveral ‘amphibious 
animals, viz. in the toad, frog, viper, fome other ferpents, lizard, 
water-falamander, and fkate*; and many of the moft eminent ana- 
tomifts of the prefent time have difcovered by their refearches into - 
the animal kingdom, thofe organs in different creatures. Profef- 
for Camper, in 1763, publifhed remarks on the organs of hearing 
in fifhes, in the Harlem ‘T'ranfactions+: Mr. Hunter has defcribed 
others in the Pnilofophical TranfaCtions {; and Dr. Monro has de- 
feribed and figured’ great variety of them in his large work en the 
ftruCture and phyfiology of fithes. 
Probably, induced by thofe difcoveries profeffor Fabricius essa 
voured to afcertain the organs of hearing in Infe€ts alfo; and about 
nine years ago publithed an account of this interefting difcovery in 
the New Copenhagen TranfaGtions$, with figures of thofe organs in’ 
‘the crab and lobfter: he found the external orifice of the organ in 
thefe animals to be placed between the long and the fhort antenna, 
the cochlea, &c. being lodged in the upper part, which Linnaeus calls 
the thorax, near the bafe of the ferrated projection at its apex; we 
muft therefore conclude that the antenne of infects are appropriated 
for fome other purpofes than thofe it is at prefent fulpected they anfwer, 
The Cerambyx /&dilis, Fabricius informs us, lives in the trunks 
of trees; its horns are moveable, as it can either direct them forward, 
or fapport them in an ereé&t pofition; and when it fleeps, it reclines 
them along its back; it alfo reclines them when it walks quick, or has 
_ to pafs through a narrow track, as the leaft refiftance from any thing in 
its way, would be very liable to injure, or break them of, 
Our, foecimen was taken in May, 
* Memoires Etrangers de pias de Ravi 175 - 
+ In the Year 1763, &e. £ Vol, Ixxii, ~~ -§ Vol ii. pe 375s 
