730 



ZOOLOGY 



—cerrhuccorv 



tsisc.n 



r.ahd. 



Fig. C16. — Triton nodiferus. Nervous system, from the dorsal side. cer. buc. con. cerebro- 

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

 infra-oasophagcal visceral ganglion ; I. abd. g. left abdominal ganglion ; I. Or. 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 ; ped,. g. pedal ganglia ; pi. >/. 

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

 gang, right buccal ganglion ; r. mant. n. right mantle-nerve ; supra, g. supra-intestinal visceral 

 ganglion ; tent. n. nerve to tentacle ; vise. n. visceral nerve-branches 



