70 



ance of a Patilkjbut tlie hinge befpeaks it a bivalve deftitute 

 of teeth ; it muft however be fubmitted with fome doubt with 

 refpe(5l to its proper place. 



Pjlicatcs, Mytilus plicatiis. Gmcl. Syst. p. 335 S. 



Cliem. Conc/i. viii. t. 8i2. f. 733. a. b. 



Shell oblong, truncated on one fide clofe to the umbo : it 

 is extremely thin, pellucid, and uneven on the furface, 

 flightly plicated, and irregularly wrinkled concentrically : 

 the beaks are extremely fmall, a little incurvated, and placed 

 at one end ; the oppofite end is rather the broadeli. Infide 

 very gloffy, with a flight nacred hue ; the hinge is wholly 

 deftitute of denticles. Length lefs than half an inch ; breadth 

 double its length. 



This fpecies has fomewliat the habit oil Mytilus pnecifus, hut 

 differs in form of the umbo, and in being pellucid, and hiant 

 at the anterior end. There can however be very little 

 doubt that it really is the (hell figured by Chemnitz, at leaft 

 it is fo like, that we dare not give it as a diftindl fpecies, al- 

 though it is defcribed as a rare fliell from JVicobar. 



From the fame gentleman as the laft, taken alive by him 

 ofi'the ifle of Sky in the year l8o6. 



We 



