214 Records of the Indian Museum. [Vol. VI, 1911.] 



The first nephridium occurs in segment vii. 



In the asexual reproductive process, by fission, ;/- = 17 ; of the 

 segments produced in the budding zone, the posterior five {i.e., 

 four seta-bearing segments plus one without setae) go to form the 

 anterior end of the posterior animal. 



