Land-shells, distribution of, [397].
—— of Madeira, naturalised, [403].
Languages, classification of, [422].
Lapse, great, of time, [282].
Larvæ, [440].
Laurel, nectar secreted by the leaves,
Laws of variation, [131].
Leech, varieties of, [76].
Leguminosæ, nectar secreted by glands, [92].