PLATE 37. 



Figs. 28, 29. Gyrocotyle fimbriata. Spines, from acetabular group. 

 Teased out. X 1000. 



Fig. 30. G. fimbriata. Spine, from neck of rosette. From specimen 

 stained in borax-carmine and cleared in cedar-oil. Showing direction of 

 spine and attachment of muscles. X 430. 



Fig. 31. G. fimbriata. Spine from neck of rosette. From same speci- 

 men as fig. 30. Drawn in situ. X 430. 



Fig. 32. Spines from margin of anterior end, in front of genital notch. 

 Teased out. X 1000. 



Fig. 33. G. fimbriata, transverse section. Cuticula absent. Showing 

 muscles of spine. X 430. Iron haematoxylin. 



Fig. 34. Same as fig. 33. Showing structure of socket of spine. 

 X 1000. 



Fig. 35. Spine from neck of rosette. X 1000. 



muse. fib. muscle fibre. 

 par. felt parenchyma felt. 

 par. nuc. parenchyma nucleus. 

 protr. m. protractor muscle. 

 retr. m. retractor muscle. 

 sp. spine. 

 sp. base spine base. 

 sp. sock. spine socket. 

 sp. tip tip of spine. 



[446] 



