Diagram* of nervous systems. A — Spironoura affine. B — Oesapha' 

 gostominn d^ntaliim. C — Oryuris equi. D — Ascaris luvibricoitles. 

 K — Aiiculostomn iluodenale. F — Trematoda (Central nervous system). 

 G — Neiiiatoda (Central nervous system). H — Spironoura affine 

 (Sliowing postlaicral ganglia and retrovesicular ganglion). I — 

 Siphonolaimus weismanni. J — Ascaris lumbricoides {Dissection 



showing major nerve processes. C, based on Martini, 1916. Ztschr. 

 Wiss. Zool,, V. 116. D, after Goldschmidt, I'JOS. Ztsclir. Wiss. Zool.. 

 V. 90. B, after Looss 1005. Rec. Egypt. Gov't. School Med., v. 3. 

 F £ G, after Martini, Deutsch. Zool. Gesellsch. a. d. 23 Jahrcsver- 

 samml. zu Urcmcn. Remainder original. 



161 



