730 



ZOOLOGY 



SECT. 



I. 



FIG. G16. Triton nodiferus. Nervous system, from the dorsal side. cer. buc. con. cerebro- 

 buccal connective ; cer. y. cerebral ganglion ; col. n. nerves to the cohimcllar muscle ; infra, g. 

 infra-cesophageal visceral ganglion ; 1. nbd. g. left abdominal ganglion ; I. br. n. left branchial 

 nerve ; I. br. n'. nerves to branchia and osphradium ; I. mant. n. left mantle-nerve ; opt. n. 

 optic nerve ; ped. con. cerebro-pedal and pleuro-pedal connectives ; pal. g. pedal ganglia ; pi. <j. 

 pleural ganglion ; r. abd. <j. right abdominal ganglion ; r. br. n. right branchial nerve ; r. buc. 

 fjuwi. right buccal ganglion ; r. mint. n. right mantle-nerve ; .sw^m. ,'/. supra-intestinal visceral 

 ganglion ; tent. n. nerve to tentacle ; cis<: n. visceral fierce-branches. 



