REPRODUCTION 



225 



Fig. 106. — Chilodon uncinatus. New mouth and basket replacing the old ones 

 prior to cell division. {N.B.) New mouth and basket; (O.B.) old mouth and basket 

 before degeneration and disappearance; (P.B.) new mouth and basket for the pos- 

 terior individual after division. (After MacDougall.) 



Fig. 107. — Uronychia tranafuga with giant cirri, membranelles used in swimming, 

 ten macronuclcar segments, and single micronucleus. (After Calkins.) 

 15 



