166 



Taken on the ScotiJJj coall near Dunbar, but is extremely 

 rare. 



1\Iya 'i h's new fpecies has been defcribed at page 22 as an in- 



P'ekuvgixosa. habitant o ,ly of vlie Scoti/Jj coall ; we have little doubt how- 

 ever that it is occafionaliy found in South Bntiin, fince a 

 fpecimen h s been noticed ni the Bryenan cabinet, witliout 

 doubt the produclion of the coaft o{ f Fey mouth. 



LiGut A Since the former part of this fupplement went through the 

 DisroRTA. prels; a remcjrkabiy fine Ipccimen of this flieh v as taken by 

 dci-p trawling, between Kingsbiidge and Plymouth, and 

 brouirlit to us with the animul in it. The valves of this 

 fliell are unulually deep, making the thicknefs when closed 

 not lefs than one inch and a quarter ; the leng'h is one inch 

 and three quarters ; and the breadth two inches and a half. 

 The Ihell is thin, and extremely light, but yet it is confider- 

 ably wrinkled by irregular concentric ridges ; and one end 

 is much fmaller than the other. 



This fpecies, the Ligulapubefcens, zwApr^tenuis have been 

 ufually conibunded. The Ipecimen ofpubefiens ol the Port- 

 land cabinet, from which Mr. Peknant is faid to have ori- 

 ginally defcribed his Mya declivis is now before us, being at 

 prefent a part of the cabinet of Mr. Laskf.y ; and we have 

 the fatisfaftion to declare that it is actually our pubifcens^ 

 This fpecimen is not fo large as one we have lately taken off 



the 



