SECTION III 

 The Appendages 



The appendages of the Apodidn^ have been much 

 discussed, and many attempts have been made to 

 homologise them with the hmbs of other Crustacea. 

 From our point of view, we must look to the para- 

 podia of our bent Annelid for the true understanding 

 of these limbs. It is, indeed, generally acknowledged 

 that the Crustacean limb arose from the Annelidan 

 parapodium. But the way this took place has not 

 been worked out. The limbs of Apus, however, 

 supply us with a clue. From these Phyllopodan 

 limbs we can work both backwards to the Annelidan 

 parapodium and forwards to the typical Crustacean 

 biramose limb. 



Continuing the detailed comparison of Apus with a 

 bent Annelid, already begun in the first section, we 

 have now to show that it is possible to deduce the 

 limbs of the former from the parapodia of the latter, 

 and that the modifications which transformed the one 



