THE NUCLEUS 



89 



from which daughter-tufts of flagella grow out ; the old tufts, with 

 their rings of blepharoplasts, persist for some time after the new 

 ones have been formed (Fig. 45, C), but ultimately they degenerate 

 and disappear. The ring of blepharoplasts in Lophomonas is 



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supported on the edge of a membranous structure, or " calyx," 

 which in its turn is surrounded by a peculiar striated body, the 

 " collar " of Grassi, or " parabasal apparatus " of Janicki (Fig. 45, 

 d.). Janicki (71) has found a corresponding parabasal apparatus 

 in other flagellates, especially in Tridtonymphidce ; the significance 



