Microscopical Essays. 



a is a fingle mufcle ; it's anterior infertion is vifible, the other 

 end is fixed to the bottom of the foot of the laft leg ; it is ufed toe 

 move the foot. 



The anterior part of the mufefe /3 is divided into three or four 

 heads, which crofs the fuperior line obliquely, and are fixed to the 

 fkin a little above it. The other end is fattened to the mem- 

 brane T» 



An Explanation of Figures 3 and 4, of Plate XII, 

 or an Account of the Muscles of this Caterpillar: 

 when it is opened at the. back, 



Preparation for Fig* 3. 



The mufcles were not only difengaged from all extraneous 

 matter, as before, but as it reprefents the third figure of Mr~ 

 Lyonet, on the mufcles of the caterpillar's back a great many had 

 been removed before the parts of the infect, appeared, as define* 

 ated in this figure. 



F i r s t R i n g, 



Only two gaftric mufcles, c d, are feen here ; c is broad, and! 

 has three or four little tails ; the firft fixture is at the bafe of the 

 lower lip, from whence it defcends obliquely, and is fixed be- 

 tween the inferior and lateral line. 



the 



