50 INTRODUCTION. 



9. Montagu, in 1803, in his excellent work on the 

 British Testacea, added 



1 . Helix fusca. 

 2. granulata. 



3. Bulimus Lackamensis. 



4. Pupa juniperi. 



5. Vertigo substriata. 



6. angustior, as T. vertigo. 



7. Clausilia biplicata. 



8. Planorbis carinatus. 



9. Limnaeus truncatulus. 

 10. Conovulus bidentatus. 

 1 1 . albus. 



12. Amphipeplea glutinosa. 



13. Cyclas calyculata. 



14. Unio ovatus. 



15. Batavus. 



10. In June, 1819, Dr. Turton, in his Conchological 

 Dictionary r , added 



1. Pupa marginata. 



11. Baron Ferussac, in 1820, in his Concordance of 

 the British Land and Fresh-water Mollusca, first pub- 

 lished as British, from specimens sent by Dr. Leach 

 and Dr. Goodall, together with Testacella Maugei 



1. Helix Carthusiana. 



2. Clausilia Rolphii. 



12. In 1821, at the end of an outline of an arrange- 

 ment of Mollusca, published in the Medical Reposi- 

 tory, I added the following, among some others which 

 "had been neglected by British authors. 



