Class VI. 



WORMS, 



6 7 



Afterias caput medufe. Lin. Syji. noi 

 Soe-Soele. Pontop. Norway, ii. 1 80. 



Arborefeem. 

 73. Arbo- 

 rescent. 



Ast. with five rays iffuing from an angular body \ 

 the rays dividing into innumerable branches, grow- 

 ing flenderer as they receded from the bafe ; the 

 moft curious of the genus. 



Found, as I have been told, in the north of Scot- 

 land. The late worthy Doctor William Borlafe in- 

 formed me that it had been taken off Cornwall. 



XX. Body covered with a futured cruft, often ECHINUS. 

 furnifhed with moveable fpines. 

 Mouth quinquevalve, placed beneath. 



Echinus. Lin. Syfl. 1102. Lift. Angl. 169. tab. ill* 

 EjC^os ua.. Arijiot. Hiji. An. lib. iv. c . V. 

 Tab. xxxiv. fig. 74. 



Efcuhnlus. 

 74. Eat- 

 able. 



Ech. of a hsemifpherical form, covered with fharp 

 ftrong fpines, above half an inch long ; commonly 

 of a violet color, moveable •, adherent to fmall tu- 

 bercles elegantly difpofed in rows. Thefe are their 

 inftruments of motion, by which they change their 

 place. 



This fpecies is often taken in dredging, and 

 often lodges in cavities of rocks juft within low- 

 water mark. 



F 2 Are 



