PLATE 34. 



Fig. 10. Gyrocotyle fimbriate, ventral. Flattened, stained in borax- 

 earmine, cleared in cedar-oil. Showing arrangement of spines at pos- 

 terior extremity. Spines at anterior extremity not shown. X 4. 



Fig. 11. G. urna, dorsal. Stained flattened specimen. Showing size 

 and character of folds of posterior rosette, and collar of spines about the 

 neck of the rosette. X 4. 



Fig. 12. G. fimbriata, dorsal. Stained flattened specimen. X 4. 



Fig. 13. G. urna (var.), ventral. Showing distribution of spines over 

 whole surface. X 7. 



Figs. 14, 15. G. fimbriata. Showing canal-opening, with proboscis 

 inverted, fig. 14, and everted, fig. 15. Sketch without camera. 



Fig. 16. Sagittal section of longitudinal nerve-stem, showing sheath- 

 cells, branch-nerves, and ganglion-cells of the first order. Iron haem- 

 atoxylin-erythrosin. X 100. 



acet. — acetabulum. 



can. op. — canal opening. 



gang. 1st. — ganglion cell of the first order. 



gen. notch — genital notch. 



n. 6. — nerve branch. 



n. fib. — nerve fibre. 



p. op. — penis opening. 



par. — parenchyma. 



post. ros. — posterior rosette. 



prob. — proboscis. 



r< •-. gem. — receptaculum seminis. 



sh. c. — sheath cell. 



ut. — uterus. 



[440] 



