ERRATA. 
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4 land 13 top Chanteraux Chantereaux. 
5 66 1853 1833. 
8 13 specimen specimens. 
9 17 Abundance Abundant. 
11 24 and 25 transpose lines. 
14° «5 add 1801. 
15 5 bottom omit Pupa pusilla. 
16 8 top Balia, Prid. Balea (Prid), Gray, 1821. 
19 bidentatus bidentata. 
18 17 places plants. 
19 6 bottom omit Fleet. 
4 Rissoa Paludinella. 
21 1 top Lam. Lam., 1801. 
2 Mill (Drap). 
3 613 f. 13. 
23 «2 glutinosus glutinosa, 
5 it itself. 
12 bottom Liddon river Liddon. 
24 5 top Mill L. 
2 bottom omit ‘river.’ 
25 17 top glabra glaber. 
26 15 omit Physa hypnorum. 
23° ¢«9 Retusa add Brown, 1827. 
6 bottom Raised beach add Portland. 
30 2 top Ascanias Ascanius. 
31 9 and 10 between these lines insert Notaspidea (and in 
Index, p. 104, three lines from bottom). 
33° 13 bottom omit this line. 
35 8 «top antiquus antiqua. 
1 and 2, bottom transpose. 
43 1,14 top R. Rissoa. 
45 3 bottom subcylindricata Subcylindrata (bracket the whole 
paragraph). 
48 5 top add Assiminea littorina. 
67 22 Audouinii Andoninii. 
104 21 Mesodesmatie Mesodesmatidie. 
