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U.S. NATIONAL MUSEUM BULLETIN 2 27 



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Figure 55. — Glycerldae, Glycera dihranchiata {e-h, after Moore, MS.): a, dorsal view 

 anterior end with proboscis extended; b, dorsal view posterior end; c, middle parapodium 

 posterior view; d, jaw with attached aileron; e, 2 proboscideal organs or papillae from 

 surface of extended proboscis;/, posterior view parapodium from setiger 25, setae omitted; 

 g, anterior view parapodium from setiger 100, setae omitted; h, compound spinigerous 

 neuroseta from setiger 15. 



the digestive tract. Ingested material was found in the form of 

 pellets up to 30 mm. long, of amorphous material of mud, sand, and 

 decaying organic matter. Undigested material was regurgitated 

 through the mouth. They move about considerably on the flats by 

 burrowing; there is no evidence that swimming is an important means 

 of movement. They seldom crawl on the surface of the mud or travel 

 long distances by swimming, as do the sandworms (Nereis virens). 

 Their excursions into new territory are slow. 



