muscle fibre 

 cat in 

 transverse 

 section 



moss of 

 fat drops 



intermediate 

 zone 



■pigmented 



spheres 



contents 

 of gut 



Plate I 



A, large pigment cell of Glossiphonia complanata, seen in a 

 section of the lateral coelomic sinus region ; 



B, a similar section to that shown in A, but stained with iron 

 haematoxylin to show the slight basiphilia of the pigmented 

 spheres ; 



C, an adipose cell containing numerous pigmented spheres. The 

 cell comprises a mass of fat drops, an intermediate zone and 

 pigmented spheres. From Bradbun*, 1957. 



