10 INVEKTEBEATA. 



PLATE V. 



FIG. I. 



THE CENTIPEDE. 



(SCOLOPENDRA MORSITANS.) 



THIS figure shows the brain, and the nerves passing from it on each side of the 

 oesophagus to the first ganglion. It shows the nervous cord, with its numerous 

 ganglia continued to the tail, and giving off branches .in a similar manner throughout 

 its course. 



FIG. II. 



DOESAL ASPECT OF THE EAKTH WORM. 



(LUMBEICUS TERRESTEIS.) 



AFTER removing the dorsal parietes the brain is seen, and the membranous sacs, 

 or hearts, communicating with the dorsal bloodvessel. 



