Class VI. ECHINUS. 139 



Murices, Purpura. Turbinated shells, whose 

 species I cannot very well determine, there be- 

 ing more than one of each in the Italian seas. 



Echinus spatagus. Lin. Syst. 



Ech. cordatus. 



Br. 



Zool. 



2. Spat a. 



1104. Gm. Lin. 31QQ. List. 



iv. 69. 







GUS. 



Oval. 



App. tab. i. Jig. 13. 











Ech. of an oval shape, gibbous at one end, 

 and marked with a deep sulcus at the other ; 

 covered with slender spines resembling bristles. 

 Shell most remarkably fragile. 



Length, two inches. Tab. xxxvi. Jig. 2. 



Gm. Lin. 3197. Ech. lacunosus. Br. Zool. iv. 69. 3. Purpu- 



REUS. 



Ech. of a cordated depressed form; on the 

 top, of a purple color, marked with a quadrefoil, 

 and the spaces between tuberculated in waved 

 rows ; the lower sides studded ; and divided by 

 two smooth spaces. 



Length, four inches. When cloathed, is co- 

 vered with short thickset bristles mixed with 

 very long ones. 



Weymouth. From the Portland cabinet. 

 Tab. xxxvii. 



Doctor Borlase gives a figure of an Echinus, 

 found in Mount's Bay, that resembles in shape 



Purple. 



