i6 



SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I40 



NNIM 



Fig. 2. — Arenophilus bipuncticeps (Wood), ventral view of the cephalic ner- 

 vous system. The majority of cephalic nerves emerge from the brain and 

 subesophageal ganglion ventrally. The three nerve fiber bundles in N7 repre- 

 sented in section innervate the intrinsic antennary musculature (NNIM). See 

 also plate i, inset, and text for explanation. (Graphically reconstructed from 

 transverse serial sections.) 



ganglion. Cordlike circumesophageal connectives join the two ganglia, 

 and both ganglia are located within the cephalic capsule (fig. i). The 



