41© 



ACCOUNT OF 



PATELLA 



Animal a Limax. Shell univalve, sub-conic, sha- 

 ped like a bason, without a spire. 



1. vulgata. P. D. M. Common on all parts of the 



coast. 



2. ccerulea. M. This shell was, in the second 



volume of Montagu's Test. 

 Brit, confounded with P. 

 pellucida ; and I am happy 

 to find myfriend has acqui- 

 esced in my arguments to 

 separate them, as well as 

 to erase P. bimaculata, in 

 same volume, from Ms list 

 of British shells. From 

 the abundance of Patella: 

 ccerulea and pellucida, on 

 the shores near Dunbar, 

 the Patella bimaculata of 

 this author also occurred, 

 in all its various transi- 

 tions, by which means I 

 was enabled to point out 

 the distinctions and error 

 in British Testacea. 

 pellucida. P. D. M. Common on various parts of 



the Frith of Forth. 

 4. parva, 6.. M. Not uncommon on the shore 



at Dunbar ; scarce on other 

 parts of the coast. 



