44 THE LIVER-FLUKE 



Transverse Section of Body. 



In a transverse section through the body (as indicated by the arrows in 

 Fig. 14, A and B) the following structures will be seen : — 



(a) The cuticle, a homogeneous layer with spinules developed in it. 

 (i) A layer of circular muscles, 

 (c) A layer of longitudinal muscles. 



Ectoderm CMticle Excretory canal Spiiju'es 



1^ 1 ,", y \^ Longitudinal muscles 



Vitelline duct \ , ij..AAiy t4l i:i^Hyjjj!j ji^^^ >„ ,/' Vitelline glands 



Circular muscles , / < \ j, f. , > Lateral nerve 



_^ -y I Was deferens 



Ovary Alimentary canal \ r. i ^ 



, \ Parenchyma 



Uterus 



Fig. 15. — Transverse Section through the body of a Liver-fluke (at the position indicated by 



the arrows in Fig. 14, A and B). 



(d) The spaces between the various organs, filled by a peculiar form of 



connective tissue, the parenchyma. 



(e) The intestine with the lateral caeca. 

 (/) Vitellarian ducts and yolk-glands, 

 (g) The uterus. 



(A) The ovary. 

 (i) The vasa deferentia. 

 {j) The excretory ducts. 

 {k) The lateral nerves. 



