680 



ZOOLOGY 



SECT. 



cerbuc.cort 



infra, .a 

 ^ / 



r.Tncinl.n 



l.ctticL. 



1SISC.TI 



r.aLd.a 



ex 



FIG. 579. Triton nodiferus. Nervous S3'stem, from the dorsal side. <>:/. bvc. con. cerebro- 

 buccal ei'iiiK/i-tivL' ; <<,. n. cerebral ganglion ; </. ,>. nerves t<> the columellar muscle ; in/rn. </ 

 infra-oesophageal visceral ganglion ; /. '/. <i. left abdominal ganglion ; /. /.,-. />. left branchial 

 nei-\'e ; /. '-/-. n'. nerves to brauchia and osphradium ; /. mant. n. left mantle nerve ; t u<i. c<n< 

 cerebro-pedal and pleuro-pedal connectives; /ii. <i. pedal ganglia; ^/. y. pleural ganglion 

 /. aii<i. ii. right abdominal ganglion; /. in: n. right branchial nerve; r. mant. n. right mantle 

 nerve ; .-<'/>'" ." supra-intestinal visceral ganglion ; <<.. ii. visceral nerve branches. 



