Canadian Arctic Expedition, 



Fig. 



Spio mimus, n. sp. 

 Spio mimus, n. sp. 

 Spio mimus, n. sp. 

 Spio mimus, n. sp. 



Scolecolepides arctius, n. sp. 

 Scolecolepides arctius, n. sp. 

 Scolecolepides arctius, n. sp. 



PLATE III. 



Anterior end, dorsal view. 



Caudal end, dorsal view. 



Thirteenth parapodium, caudal view. 



Crochet from twenty-seventh setigerous somite. 



Anterior end, dorsal view. 

 Twenty-third parapodium, anterior view 

 Twenty-fourth parapodium from caudal end, anterior 



