332 Microscopical Essays^ 



fecond mufcle A is a little below the firft fpiraculum, near- which 

 they are fixed to the fkin. 



d is long and (lender ; it is fixed by it's anterior extremity un- 

 der the gaftric mufcles (a and b) of the firft ring, to the circum- 

 flex fcale of the bafe of the lower lip. After having pafled under 

 fome of the arteries, it introduces itfelf under the mufcle 0, and 

 communicates there with the mufcle c of the fecond ring. 



/3 is fome times fmgle, fometimes double, and fometimes triple ; 

 it is hardly poflible to open the caterpillar by the belly without 

 breaking it ; the anterior fixture is to the pofterior edge of the fide 

 of the parietal fcale; the lower fixture is at the middle of the 

 ring, near the inferior line. 



The mufcles marked £ are three in number ; the firft is fixed 

 at one extremity, near the lower edge of the upper part of the 

 parietal fcale ; the other end divides itfelf into three or four taij^ 

 which are fixed to the fkin of the caterpillar under the mufcle ^ 



The anterior end of the fecond has it's infertion near the for- 

 mer ; that of the third a little under the two foregoing, at the fkin 

 ©f the neck, under the mufcle A. Thefe two laft pafling over 

 the cavity of the firft pair of limbs, are fixed by feveral tails to 

 the edge oppofite to this cavity. 



In this fubjecl there are two mufcles marked !), fometimes there 

 is only one ; their anterior fixture is to the lower edge of the 

 parietal fcale; the other ends are inferted in the firft fold of the 

 fkin of the neck, on the belly fide. 



ffand 



