G.
- Gallinula aquatica, [15]
- Gannet, [7], [13]
- Gammarus, [53]
- Garfish, [40], [66]
- Garrulus Bohemicus, [68]
- Garrulus Argentoratensis, [30], [63], [67], [87]
- Geese, [12], [13]
- Gladius, [36], [64], [88]
- Glot, Eel, [54]
- Gnatts or Knots, [19]
- Goatsucker, [26], [63], [66], [87]
- Gobies, [42 (note)]
- Godwit, [19], [24]
- Gold-crested Wren, [29 (note)], [76]
- Golden Eagle, [3 (note)], [67]
- Golden-eye Duck, [84 (note)], [88]
- Goldfinch, [29]
- Goosander, [13], [72], [83 (note)]
- Goodyer, John, [59]
- Grampus, [33], [92]
- Great Northern Diver, [8]
- Green Plover, [19 (note)], [20]
- Grey Plover, [20]
- Grebe, G. Crested, [13]
- Grebe, Little, [13]
- Grouse, Black, [28]
- Gryllotalpa, [55 (note)], [56]
- Gudgeon, [54]
- Guillemot, [84 (note)], [88]
- Gulls, [8], [9], [10]
- Gurnards, [39]
- Gurney, Anna, [xx].
H.
- Haddock, [43]
- Hard-worm, [55], [56]
- Harriers, [4], [5 (note)]
- Hawfinch, [25]
- Hermit Crabs, [48]
- Herons, [17]
- Heron, Black, [22]
- Heron, Purple, [22 (note)]
- Heathpoult, [28]
- Herring, [39]
- Hippolyte varians, [53]
- Hirundo marina, Sea Swallow, [10]
- Hirudines marini, Sea Leeches, [50]
- Horse-leeches, [55 (note)], [56]
- Horse Mackerel, [39]
- Hobby, [78]
- Hobby-bird, [22]
- Hoopoe, [23], [67]
- Hooded Crow, [26]
- How, Dr. William, [59 (note)]
- Hydrocantharus, [55 (note)], [56]
- Hydrozoa, [70]
J.
K.
L.
- Lampern, [54]
- Lamprey, [54]
- Lanius, [25]
- Lapwing, [20]
- Lari, many sorts of, [8], [9]
- Larks, [28]
- Larus minor, [9], [73]
- Leeches, [50]
- Lesser Butcher Bird, [26 (note)]
- Letters to Dugdale, [91]
- Letters to Merrett, [57]
- Letters from Merrett, [86]
- Limpets, [47]
- Lingula, [45]
- Little Auk?, [79 (note)]
- Littorina, [47]
- Lizard, [55]
- Loach, [54]
- Lobster, [46]
- Lolego, [46], [62], [86]
- Loon, [13]
- Loxia, [25]
- Lug Worm, [50 (note)]
- Lump-fish, [39]
- Lupus marinus, [38], [61], [86]