547 



The Chryfodon is ufually buried in a perpendicular di- 

 reftion ; the funnel, or mouth of the cafe, is always 

 about an inch above the furface, and is readily diftin- 

 guifhed by its branched fibres: it is generally flrait, ex- 

 cept where larger ftones intervene, in which cafe it is 

 flexuous. Found mofi; times congregated between high 

 and low water-mark. 



This, and the Sabella conchilega, have mofl: probably 

 been confounded; and, indeed, it is difficult to deter- 

 mine which of thefe is the Chryfodon of Gmelin. 



It is fometimes wholly compofed of broken fhells, in 

 which flate, it may be miftaken for that fpecies ; but is 

 never found creeping, or laterally attached. 



The animal is a Terehclla of a flender form, but con- 

 fiderably largefl at the anterior end : joints about forty, 

 with as vndiny fafcicidi and branchics on each fide, the 

 firfl nine or ten much larger, and nearer together than 

 thofe on the middle of the body ; round the mouth are 

 numerous, long, filiform tentacula, like the body, of a 

 apale flefli-colour; behind the head are fhort, branched 

 feelers. Length fometimes four or five inches. 



5. 

 Sabella conchilega. Pult. Cat, Dorfel. p. 54. CoNCHlLEGA, 



Terebella conchilega. Gniel. Syji. p. 3113. 

 Tiirt. Lin. iv. p. 84, 

 Sabella rudis. Br. Zool. No. 161. t.26. lower figure. 



Aaa a 2 S. with 



