PLATE 46. 



Fig. 76. Gyrocotyle fimbriata. Median sagittal section, posterior ex- 

 tremity. Showing funnel, canal, funnel-opening, canal-opening and sec- 

 tions of the ring commissures of the nervous system of the posterior 

 extremity. X 100. 



Fig. 77. Same, to left of median. Reconstruction of five sections, 

 showing lateral view of nervous system. Faint dotted lines indicate 

 course of nerves as shown in the neighboring sections; heavy dotted lines 

 indicate position of funnel with reference to the central nervous system. 

 X 100. 



can. op. canal opening. 



ex. can. excretory canal. 



lat. anast. lateral anastomosis. 



lat. long. conn. lateral longitudinal connective. 



post. br. comm. posterior bridge commissure. 



post. gang. Jen. posterior ganglion knot. 



prox. r. comm. proximal ring commissure. 



ros. n. st. rosette nerve stem. 



ros. r. comm. rosette ring commissure. 



ros. sphinc. rosette sphincter. 



</' tope. 



[464] 



