78 



BIOLOGY OF THE PROTOZOA 



Fig. m.~Uroleptus mohilis Eng. First and second meiotic divisions during con- 

 jugation. (A) Two conjugating individuals; (B to (?) formation of the first spindle 

 pole by division of the cndobasal body (with centrodesmose) ; (H to M) first meiotic 

 luiclear division; (A^ to Q) second meiotic division. (After Calkins.) 



