Y..Y 



FIG. 49. Longitudinal section through the head of the Squid showing 

 ganglia and cartilages. After Williams. UJ, upper jaw; IBG, infrabuccal 

 ganglion; SBG, suprabuccal ganglion; OE, oesophagus; PPG, propedal 

 ganglion; CG, cerebral ganglion; PG, pedal ganglion; VG, visceral ganglion; 

 PLN, pleural nerve and viscero-stellate connective; VN, visceral nerve and 

 viscero-branchial connective. 



