r 



^on 



i.r.r 



'pre 



removed a.,- . adradial canal; ;,. /. gLtric mWionte "JZ gonadI% „ '^Xl'^'Z^r 

 i.r c mter-radial canal; mg. I p. marginal lappet; ,nlh. mmith -oi a o?^l{vm- I ^ ^' 

 radial canal ; s.y. j7. sub-genital pit ; st. stomaJh ; ( tentacles " ' ^•'^- ''• P'^''" 



