PLATE 37. 



Figs. 28, 29. Gyrocotyle fimbriate. 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. 

 far. felt — parenchyma felt. 

 liar. line. — parenchyma nucleus. 

 protr. nt. — protractor muscle. 

 retr. m. — retractor muscle. 

 sp. — spine. 

 sp. base — spine base. 

 sp. sock. — spine socket. 

 sp. tip — tip of spine. 



[446] 



