36 B 



Canadian Arctic Expedition, 1913-18 



PLATE IV. 



Fig. 1. Scolecolepides arctius, n. sp. Crochet from twenty-third parapodium from caudal 

 end. 



2. Anaspio boreus, n. sp. Anterior end, dorsal view. 



(Setae of third parapodia not represented.) 



3. Anaspio boreus, n. sp. Tenth right parapodium, anterior view. 



4. Anaspio boreus, n. sp. Distal portion of crochet from neuropodium of thirty-fifth 



parapodium. 



" 5. Spionid larva A, dorsal view. 

 " 6. Spionid larva A. Crochet. 



