224 



THE INVERTEBRATA 



yl'Ory. 



Fig. i6i. Bucephalus larva (cercaria) of Gasterostomum fimbriatum. After 

 Benham./.^a//, forked tail ; gl.org. glandular organ ; M. mouth ; phar. pharynx. 



ectc. c.rn. ^^^^^ 

 u,t. cut, I m.fi.: /^^^ ^^ 



ca. 



Fig. 162. Transverse section through a mature proglottis of Taenia, x about 

 12. From Shipley and MacBride. cut. cuticle; ect.c. ectoderm cells sunk into 

 the parenchyma; m.fi. longitudinal muscle fibres cut across; cm. layer of 

 circular muscles; lime c. lime cell; ov. ovary; t. testis with masses of germ 

 cells forming spermatozoa; In.exc.ca. longitudinal excretory canal; In.n. 

 longitudinal nerve cord; iit. uterus; od. oviduct. 



