PRIMORDIUM IN RELATION TO STRIPE PATTERN 



85 



A 1 



Fig. 47. Abnormal primordia. 



A. Odd specimen found in culture and showing how the 

 anlage follows the contortions of the locus of stripe-width 



contrast. 



B. Elongate specimen from aborted fission now regenerating 

 with extensive primordium formations in long l.s.c. 



C. Dividing stentor showing how anlage follows contour of 

 the fine stripes and not the broad, which are considerably 



misplaced. 



D. Short V-primordium from small, anterior patch of fine 

 striping forms no mouthparts and merely replaces a portion of 



the original membranellar band. 



E. Stage-2 regeneration primordium grafted posteriorly into 

 a stage-5 reorganizer. Regeneration anlage extended and formed 

 a loop primordium which moved to the anterior end, broke into 



the peristome and formed good oral pouch. 



F. Reorganizing double stentor with odd anlage in one half 

 consisting only of an oval of long oral cilia, not organized into 



membranelles. Specimen then died. 



