144 



THE ANIMALS AND MAN 



cerebral ganglion 



retractor and protractor 

 muscles of the pha/rynz 



oesophageal pouches- 

 seminal receptacles 

 seminal vesiclesz-.y: 



anus^ 



.pharynx 

 (exnphagus 



Fig. 59. Dissection of the earthworm, Lumbricus sp. 



