f /^ o 



cemented together on a fine membrane, adhering by 

 their flat fides. 



This fpecies is not uncommon in fand from Salcomb 

 bar, above three inches in length, but more commonly 

 broken into pieces of one or two inches ; never more 

 than one tenth of an inch in diameter, and nearly the 

 fame fize throughout. 



Animal unknown. 



10. 

 S. with a long, flender tube, gradually tapering IoSetiformis. 

 the lower end to half the fize of the upper part ; com- 

 pofed of very fine fragments of fiiells, and minute flat 

 bits of fl;ones, agglutinated together at their edges, and 

 fl;anding oblique towards the larger end, lying on each 

 other in an imbricated manner. Lensrth three or four 

 inches ; fize double that of a hog's bridle. 



Taken up with fand from the bar off Salcomb, and 

 fome parts of the bay. 



A variety is compofed of fine fand, in which cafe the 

 imbricated ftruclure is not obfervable : fome have a late- 

 ral branch near the fmaller end ; polfibly another in a 

 younger (late attached. 



Animal unknown. 



B b b b S . with 



