1890.] REPETITION OF PARTS IN ANIMALS. 



Fig. 4. 



585 



mouih 



B 



A, Diagr.im showing the position of the abnormal arms, i^ and e,, to the mouth 

 and anus. 13, is a semidiagrammatic enlargement of the arm, h.^ 



(Drawn by Mr. Edwiu Wilson.) 



