ERRATA. 



Page 3, line 25. Valvata piscinalis, v albina, Taylor. 



,, 5, ,, 32. Limnosa stagnalis, v rapbidia, Boi/rg. 



„ 7, „ 10. Arion ater, v bicolor, Roebuck. 



,, 9, ,, 32. Helix pomatia, v albida, Afoq. 



