ver-flies, 74-6

Hymenoptera, 58, 64, 94, 107

Hypermetamorphosis, 56

_Hypoderma bovis_, 73-5

Hypodermis, 9

Ichneumon-flies, 64, 66, 82

Imaginal buds or discs, 34-48, 114, 117-8

Imago, 24, 34, 114

Instar, 13, 33, 56, 117-9

Jaws of imago and larva, 2, 4, 5, 32, 42, 89

Jurassic insects, 107

Kahle, W., 90

Kellogg, V.L., 108

Kowalevsky, A., 46

Labium, 2, 27

Lacewing-flies, 57, 107

Ladybirds, 113

Lameere, A., 111

Lampyris, 113

Larva, 4, 22, 26-7, 32, 49-79, 110-15

Larval reproduction, 90

Lasiocampidae, 59, 89

Latter, O.H., 28

Leaf-beetles, 53, 83, 92-3, 113

_Lebia scapularis_, 119

Lepidoptera, 1, 36, 38, 49, 58, 81, 95-104, 107

Libellulidae, 27

Lice, 116

Lipeurus, 108

Longhorn Beetles, 55

Looper caterpillars, 59, 61

Lowne, B.T., 42

Lubbock, J., 6, 32

Lymantriidae, 90

Lyonet, P., 38

Machilis, 11

Maggot, 44, 67, 71-6, 109, 114

Magpie Moth, 60, 82, 97-8

Mallophaga, 108

Mandibles, 4, 17, 26, 58, 67, 86

Mangel-fly, 73

Marlatt, C.L., 93

Marshall, G.A.K., 104

Maxillae, 2, 17, 37, 42

May-flies, 31-4, 107, 110, 117, 120

Meloidae, 56

Mesozoic insects, 107

Metabola, 35

Metamorphosis (in general), 6, 109;
(degrees of in insects) 8, 35, 109, 117-19

Miall, L.C., 6, 28, 33, 43, 77, 78, 87, 97, 113

Mosquito. _See_ Culex, Gnats

Moths, 1, 58-62, 84, 95-100, 117

Moult, 10, 32, 36, 41

_Musca domestica_, 71

Muscidae, 44

Muscles, 47

Nervous system, 44-5

Neuroptera, 57, 80, 112

Newport, G., 41, 44

Noctuidae, 60, 98

Nymph, 15, 28, 33

Oak-apples, 94

Obtect pupa, 81

Odonata, 24.
_See also_ Dragon-flies

_Oestrus ovis_, 91

Oil-beetles, 56, 112

_Orgyia antiqua_, 96-7

Orthoptera, 17, 35, 110

Owl Moths, 60, 98

Packard, A.S., 56, 118

Paedogenesis. _See_ Larval reproduction

Painted Lady Butterfly, 96

Palaeozoic insects, 107

Palmen, J.A., 25

Parasitic insects, 73-4, 108, 116

Parental care, 64-6

Parthenogenesis, 18

Partial transformation, 35, 37

Perla, 24

Permian insects, 107

Phagocytes, 48

Phyllodecta, 53, 113

Phyllotreta, 53

_Pieris brassicae_, 39, 41, 85, 100

_Pieris napi_ and var. _bryoniae_, 102-3

Platygaster, 66

Plecoptera, 24.
_See also_ Stone-flies

Pompilidae, 66-7

Poulton, E.B., 61, 82, 109

Precis, 104

Proctotrypidae, 66

Pro-legs, 4, 58-9, 84, 114

Pro-nymph, 118, 119

Protective coloration,