VARIOUS PHASES OF H^MAMCEBIDii;. 



583 



segments of the broken-up nucleus of the original sperm 

 mother-cell, and that thus they form a number of outstand- 

 ing processes, at first short and ovoid, but later filamentous 

 in form, upon the surface of a '' blastophore," a residual 



Figs. 7 — 11. — Development of spermatozoa of the Earthworm. After 



Bloomfield. 



central mass of considei'able volume to which this name was 

 originally given by Blom field. 



As in Benedenia, so in Lumbricus and Htemamoeba, the 

 ripe filamentous spermatozoa become detached from the 

 blastophore and swim about as active independent bodies, 

 whilst the blastophore disintegrates and disappears. 



The exact character of the spermatozoa of a certain Coc- 

 cidian (Echinospora) has been well shown by Leger in the 



