VI 



ARACHNOIDEA NERVOUS SYSTEM 



519 



FIG. 363. Nervous system of the 

 Scorpion (after Newport). 1-6, Nerves of 

 the 6 pairs of limbs ; ma, middle eyes ; sa, 

 lateral eyes ; g, brain ; bg, large infra-ceso- 

 phageal ganglionic mass ; 01-07, ganglia of 

 the abdomen. 



FIG. 364. Nervous system of Thely- 

 phonus caudatus (after Blanchard). 

 1-6, First to last pairs of limbs with the 

 corresponding nerves from the thoracic 

 ganglionic mass ; au, eyes ; g, brain ; ug, 

 thoracic ganglionic mass ; ab, abdomen ; 

 ag, abdominal ganglion ; sa, jointed caudal 

 appendage. 



