SYMPATHETIC NERVES OF THE TERRESTRIAL CARNIVORA. 83 



11. The superior and inferior cervical ganglia are variable, but 

 the middle cervical sympathetic ganglia are absent. 



12. Thoracic sympathetic ganglia are absent, small or large. 



13. The splanchnic nerves may be branches or continuations of 

 the thoracic cords, and a branch of the great splanchnic becomes 

 the abdominal sympathetic in the latter case. 



14. Well-marked nerves are traceable from the vagus and solar 

 plexus to the csecum. 



15. The vagus nerve may give oft" plexuses virhich arise from 

 the solar plexus in most mammals. 



16. The vagus and sympathetic nerves of the terrestrial Car- 

 nivora difter in many details from those of PhoccBna communis, 

 the latter being more complex in several respects. 



Bihliography. 



1. Swan, J. — Illustrations of the Comparative Anatomy of the 

 ISTervous System. London, 1864. 

 List of former papers on the vagus and sympathetic nerves :^ 

 -P. Z. S. 1921, pp. 572-575 (Phascolarctos). 

 P. Z. S. 1921, pp. 873-876 (Maisupialia). 

 P. Z. S. 1922, pp. 99-108 (Edentata). 

 P. Z. S. 1922, pp. 149-156 {Hyrax). 

 P. Z. S. 1922, pp. 444-449 {Mandrillus). 



