554 



11. 



CuRTA. S. with a fmall,. fliort tube, compofed of fand and mi- 



nute bits of flat flones, agglutinated to a tough mem- 

 brane ; fometimes formed wholly of tlie fineft fand, de- 

 pending entirely on the foil it inhabits: the cafe is a lit- 

 tle tapering to the lower end, by which it is fixed, and 

 which is generally, for a quarter of an inch, deftitute of 

 any covering, but a flexible membrane, by which it ad- 

 heres to the fliingle under thefurface, between high and 

 low water-mark, and flands about a quarter of an inch 

 above. Length fcarce an inch ; fize of a crow quill. 



This Sabclla is gregarious, covering the whole furface 

 of the fhore in the m\ex. r\e.<ix Kingsbridge ; appearing 

 like bits of draw covered with mud, and as clofe ^nd 

 numerous as ftubble in a field. 



Animal a Terebella, fmall, of a pale yellowifli-green 

 colour; probofcis pointed, with a few upright, filiform, 

 green ientacicla, and numerous, flender, ciliated feelers, 

 of a pale colour; thefe are much longer, and more flen- 

 der than the others, and are in conllant motion, but 

 both are quickly protruded and contratted. 



When the animal was immerfed in fpirits the tcntacula 

 inftantly contra6ied, and were totally obfcured. Being 

 diverted of its cafe, a radiated tuft was perceived on each 

 fide the head; the annulations of the body about fix- 

 teen, with as m-dny fajciciili, and fhort peduncles on each 

 fide. 



S. with 



