34pn 
Seo 
Canadian Arctic Expedition, 1913-18 
Spio mimus, n. sp. 
Spto mimus, n. sp. 
Spio mimus, n. sp. 
Spio mimus, 0. sp. 
PLATE HI. 
Anterior end, dorsal view. 
Caudal end, dorsal view. 
Thirteenth parapodium, caudal view. 
Crochet from twenty-seventh setigerous somite. 
Scolecolepides arctius, n. sp. Anterior end, dorsal view. 
Scolecolepides arctius, n. sp. Twenty-third parapodium, anterior view 
Scolecolepides arctius, n.sp. Twenty-fourth parapodium from caudal end, anterior 
view. 
