NORTH BRITISH TESTACEA. 371 



all 271 species; and no doubt many more may 

 be added, by the zeal of our Members. I 

 have mentioned no shell but what has actually 

 come under my own eye, and now remains in my 

 cabinet. Not having entered into the microsco- 

 pic species, I am certain a rich harvest awaits any 

 inquirer inclined for this pursuit. It gives me 

 pleasure to acquaint the Members of the Society, 

 that I have added near 50 new species of Testacea 

 to the British Fauna, from their native shores ; and 

 also having met with several species, to which 

 much doubt was attached, I have now positively 

 fixed them as inhabitants of the British seas. 1 

 am, Sir, yours, &c. 



J. Las key, 

 Capt. 21st Militia, 



I shall deem it sufficient to refer to the Testacea 

 Britannica of Montagu, to Pennant's British Zoo- 

 logy, and Donovan's British Shells, for the syno- 

 nymes ; which shall be signified by the following 

 abbreviations : 



M. - - Montagu's Testacea Britannica* 

 P. - - Pennant's British Zoology. 

 D. * - Donovan's British Shells, 



A 3. % 



