332 



WILLIAM PATTEN. 



S^lvrA t<a~-4*-V ^- 



•-S^OOM-^ 



•^i-^^^ 





Fig. 4. — Brain and portion of nerve-cord of adult Scorpion, seen from the 

 neural surface, constructed from sections and surface views. — A. B. Ac- 

 cessory brain. //, B. Fore-brain. V . and V". Hrcnial nerves of first 

 vagus neuroniere. V^. and V^. Haemal nerves of second and third vagus 

 neuromeres. F'*. Haemal nerves to fourth vagus neuromere. 



