S6 OF THE PRINCIPAL WORMS 



ticulations wiiicli contain the ovaries, full of eggs, 

 the most mature are these which, from the middle 

 of the body of the worm, extend toward its tail. (90) 



^ XVII. The lateral edges or- margins of each 

 articulation of tlie armed taenia, are provided with, 

 a papilla at the extremity of which is observed an 

 oblong opening.(91) which Goeze represents as se- 

 parated by a line.(i)2i) 



These papillae, with their small mouth, occu- 

 py only one of the margins of each ring ; their 

 disposition is however such, that we sometimes see 

 them in the right lateral part of a ring, and in the 

 next in the left lateral part,(&3) and at other times 

 they rise in two, three, four, live, and even six rings 

 on the same side, and immediately after in one or 

 two articulations on the opposite side. (94) 



It is probable that the internal structure of these 

 papillae results from a tissue of fibres, since, if we 

 are to credit Rosenstei7i,{Q5) the living worm has 

 the power of thrusting them forward and of retract- 

 ing them. 



The small apertures of the papillae communi- 

 cate with the ovaria. and on this account they are 

 to be regarded as the last extremity of the egg- 

 ducts. (9*i) 



Goeze, though persuaded that the taenia sucks 

 up its nourishment by means of the four openings 

 situated in the head, nevertheless believes that the 

 lateral papillae absorb the nutrition requisite to 

 support the posterior division of this very long 

 >vorm.(97) 



