382 



WM. L. TOWER, 



Explanation of Plates. 



Plate 21—26. 



Abbreviations. 



a anterior 



act acetabulum 



cl.gn ganglionic cell 



cl. vin binding cell 



CO body of cephalic ganglion 



corns commissure of cephalic 



ganglion 

 corns, d dorsal commissure of pro- 

 glottis 

 conis d' dorsal cephalic commissure 

 corns. V ventral commissure of pro- 

 glottis 

 corns, v' ventral cephalic commissure 

 conH. cep. dx right connective be- 

 tween the cephalic and the an- 

 terior ganglia 

 Con''t. d-v dorso-ventral connective 

 conu. a anterior horn of cephalic 



ganglion 

 conu. ex external horn of cephalic 



ganglion 

 eta cuticula 

 d dorsal 

 gn. a. dx-d anterior dextro-dorsal 



ganglion 

 gn. a. s-v anterior sinistro-ventral 



ganglion 

 gn. dx right cephalic ganglion 

 gtl. dx-d dextro-dorsal ganglion 

 gn.dx-v dextro-ventral ganglion 

 gn. I. a anterior lateral ganglion 

 gn. l.p posterior lateral ganglion 



gn. s left cephalic ganglion 



gn. s-d sinistro-dorsal ganglion 



gn. s-v sinistro-ventral ganglion 



n. a anterior nerve ring 



n. gen. ex external genital nerve 



n.gen.i internal genital nerve 



n. I lateral nerve 



n. Ig. dx-d dextro-dorsal longitudinal 



nerve 

 n. Ig. dx-v dextro - ventral longi- 

 tudinal nerve 

 n. Ig. s-d sinistro-dorsal longitudinal 



nerve 

 n. Ig. s-v sinistro-ventral longitudinal 



nerve 

 n.marg marginal nex've 

 p posterior 

 ut uterus 

 V ventral 

 va.dx right arm of the anterior 



loop of excretory tube in scolex 

 va. dx-d dextro-dorsal longitudinal 



excretory tube 

 va. dx-v dextro-ventral longitudinal 



excretory tube 

 va. lg longitudinal excretory tube 

 va. s-d sinistro-dorsal longitudinal 



excretory tube 

 va. s-v sinistro-ventral longitudinal 



excretory tube. 

 va. t transverse excretory tube 



