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4.0 



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Cephalo-thoracic length during period in which regeneration lakes place 



Snefatl^n°"'A^nnrr.o°Jt;5n'*.f ? '^""""^ regenerations in all the individuals, arranged according to cephalo-thoracic length. X First re- 

 fegeneSn. '"P''^P°''t'°" °^ two cases of first regeneration; Q second regeneration; ©superposition of a firsF and a second 



