Details of nervous system. A-F — Oxi/uris eqiti (A — Diagram 

 showing cephalic part of nervous system as seen cii face; B — 

 Dorsal part of nerve ring and subdorsal cephalic papillary 

 ganglia ; C — Ventral part of nerve ring and ventral ganglion ; 

 D — Lateral ganglion ; E — Dorsolateral lobe of lateral ganglion ; 

 F — Diagrammatic reconstruction of ganglia on level of nerve ring). 

 G — MetO)u hold linns pristiurus (Longitudinal section showing nerve 

 ring and parts of lateral and ventral ganglia). H — Oesophagostomuin 

 <le7itatu)>i (Cross section just posterior to nerve ring). I — Rhabditis 

 lambdieusis, retrovesicular ganglion. J — Spironou)'a affine (Longi- 

 tudinal section showing parts of lateral and ventral ganglia. The 

 lateral cells (on readers' left) which terminate as circles at 



level of nerve ring are amphidial neurones, the circles 

 representing cut ends of fibers to lateroventral commissure I. ) . 

 K;_.Sjj( ronoH7-a aff'nie (Subdorsal cephalic papillary ganglion and 

 subdorsal ganglion). L-Q — Rhabditis terricola (L — Postlateral gang- 

 lion ; M — Longitudinal section showing parts of lateral ventral 

 and subventral papillary ganglia; N — Section adjoining M, shaded 

 area to right is excretory tissue, neurones next to it are post- 

 ventral ganglion cells: to right are retrovesicular ganglion cells). 

 Q, O & P follow in series. 



A-F. After Martini 1916. Ztschr. Wiss. Zool.. v. IIG. Remainder 

 original. 



166 



