The nervous system in the Cestode Moniezia expansa. 383 



Plate 21. 

 rigs. 1, 2, 4 and 5 are diagrammatic. 



Fig. 1. Reconstruction of the nervous system in the scolex ot 

 Moniezia expansa. 



Fig. 2. Transverse section of the scolex at the region ßß' (Fig. 1), 

 showing the position of the nerve structures. 



Fig. 3. Frontal section through the posterior lateral ganglion. 

 From a Vom Rath preparation. X ^^0. 



Fig. 4. Transverse section of the scolex at the region aa' (Fig. 1), 

 showing the position of the nerve structures etc. {n. I. dx-d should be 

 n. Ig. dx-d). 



Fig. 5. Transverse section of the scolex at the region yy' (Fig. 1), 

 showing the position of the nerve structures, etc. at that level. 



Plate 22. 



Fig. 6. Diagrammatic reconstruction of the nervous system in 

 four proglottides. 



Fig. 7. Transverse section of a proglottis through the posterior 

 lateral ganglion (diagrammatic). 



Fig. 8. Diagrammatic representation of the paths taken by the 

 nerve fibres that enter and leave the cephalic ganglia (see p. 371). 



Fig. 9. Parasagittal section through the longitudinal nerve in a 

 region between the posterior and anterior lateral ganglia, showing 

 "binding" cells and ganglionic cells lying along the nerve. From a 

 Vom Rath preparation. X 500, (vt by mistake for ut.) 



Fig. 10. Parasagittal section of the marginal nerve, showing nerve 

 fibres passing off from it. Vom Rath preparation. X HOO. 



Fig. 11. Section (transverse to the chief axis of the scolex), 

 through the dorsal cephalic commissure, showing bipolar ganglionic cells. 



Plate 23. 



Fig. 12. Portion of a diagrammatic transverse section of a pro- 

 glottis through the anterior lateral ganglion and the genital nerves, 

 showing the distribution of the nerve fibres from the marginal nerve, 

 and from the sinistro-dorsal and the sinistro-ventral longitudinal nerves. 



Fig. 13. Parasagittal section (diagrammatic), of a proglottis through 

 the sinistro-dorsal and the sinistro-ventral longitudinal nerves, showing 

 distribution of the nerve fibres. 



Fig. 14. Portion of a frontal section of a proglottis through a branch 

 of the dextro-dorsal longitudinal nerve. Vom Path's preparation. X 1000. 



Plate 24. 



Fig. 15. A frontal section of the lateral nerve showing ganglionic 

 and binding cells. Vom Rath. X '^^0. 



Fig. 16. Portion of a transverse section of a postei'ior lateral 

 ganglion, showing protecting ("binding") cells upon the surface of the 



