Km 



A — Kecoiistructioii of esophagus of Siiiroiiiniia show- 

 ing nuclei, glands and esoiih.-jgo-s.vmpathetic. (Dnrsa 

 to reader's right.) B — Dioclophiima renale, esophageal 

 gland tubule branching. C—Soholiphyme balurini, esoph- 

 ageal gland tubule. I) — AKi-nris lumbricoiden , dorsal 

 esophageal gland tubule. E-F — Rhabditoid bulb, (E— 

 at rest; F — contracted). G-M — Ascaridid esophagi and 

 intestines. (G — Anndicaecum: H — iTiffM.vdcnfCHm ; 1 — 

 Dujardinin huUcornin ; J — Dujiirdiniti heUcina; K — Con- 

 tracaecum; L — Pnrrocaeciiw : M — AiiUakis) ■ N — Dia- 

 gram of esophageal symmetry, (d. dorsal area; dli dorso- 

 lateral area of dorsal sector; dl;, dorsolateral area of sub- 

 ventral sector; dl dorsolateral (i. e., subdorsal) esoph- 



ageal radius: sd subdorsal area, - 

 subvential area; vl ventrolateral area; vr ventral esoph- 

 ageal radius). O— Cri/iirw <■'/"'. (Fourth stage larva). 

 |..Q_A'pire,u.u,™ (tffiof. esophago-syiiipathetic nervous 

 system. ( I>— Diagrannin.lic connection of cells dorsa 

 view compare with A.; Q— Detail of right subventral 

 nerve trunk, lateral view). R— /tscnnV lumbrxcmdes 

 (Esophago-sympathetic nervous systeui, diagrammatic dor- 

 sal view, d" & N after Chitw. & Hill, 

 forsch, V. 14 (4). G-M, after Baylis. 

 12 (3); O, after Ihle & Oordt, 1921. 

 Akad Wetensch. Amsterdam. 



19;12, Ztschr. Zell- 

 1 920 Parasit., v. 

 I'roc. Sec. Sc. K. 



90 



