18 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 22 



The polychaetes are best represented in the basins. Some of the larger 

 kinds are ampharetids, terebellids, onuphids and maldanids. The first 

 two kinds have a prehensile tentacular oral apparatus and may be filter 

 feeders. Onuphids have a hard masticatory pharynx and may tear food 

 particles from a larger mass. Maldanids have a soft voluminous pro- 

 boscis and probably ingest unsorted masses of mud and food particles. 

 Phyllochaetopterus, like other chaetopterids, may secrete a mucus ball 

 in which foods are trapped. A large deep water gastropod, Turcicula, 

 feeds on green mud and foraminiferans (Dall, 1890). Ophiuroids 

 (Ziesenhenne, in litt.) and the amphipods that have been examined are 

 largely deposit feeders. 



