INDEX 



Holometabola, 180 



Holometabolous development, 180 



Holorusia rubiginosa, 197 



Homocbronous heredity, 181 



Homologizing of the sclerites, 35 



Honey-bee, 158 



Horseshoe-crabs, 8 



House-fly, larva of the, 202 



Humeral angle, 60 



Humeral cross- vein, 71 



Humeral veins, 74 



Huxley, 40 



Hydrophilus, egg sac of, 170; embryo 



of, 76; maxilla of, 44 

 Hyper metamorphosis, 191 

 Hypodermal glands, 98 

 Hypodermal structures, 95 

 Hypodermis, 29 

 Hypopharynx, 47 

 Hypopygium, 75 

 Hypothetical tracheation of a wing of 



the primitive nymph, 63 

 Hypothetical type of the primitive 



wing-venation, 62 



Imaginal disc, 195, 205 



Imago, 191 



Imperf orate intestines, 108 



Incomplete metamorphosis, 178 



Inner margin, 60 



Insects, 26 



Instars, 172 



Intercalary veins, 69 



Intermediate organ, 152 



Internal anatomy, 94 



Internal organs, the transformations of 



the, 204 



Internal skeleton, 95 ; sources of the, 95 

 Intersegmental plates, 40 

 Intima, 109, 117 

 Invaginations of the body-wall, 95 



Janet, 87 



Japyx, 161 



Johnston, Christopher, 152 



Johnston's organ, 152 



Judeich and Nitsche, 116 



Jugular sclerites, 40 



Jugum, 61; of a hepialid, 63 



Julus, 16 



Katepimerum, 51 

 Katepisternum, 51 

 Katydid, chirp of the, 93 

 Kellogg, 100, 197, 199, 200 

 Kenyon, 18, 19 

 King-crabs, 8 

 Kirby and Spence, 97 

 Korschelt and Heider, 203 

 Kowalcvsky, 202 



Labial palpi, 46 



Labium or second maxillae, 45 



Labrum, 38, 43 



Lace-like cocoon, 188 



Lacinia, 45 



Lamellate, 41 



Landois, 91 



Large-intestine, 113 



Larva, the term denned, 180 



Larvae, adaptive characteristics of, 181 ; 



the different types of, i3 

 Lateral conjunctivse, 35 

 Latzel, 19, 21, 23, 24 

 Leach, 174 



Legs, 56; the development of, 197 

 Lehr, 155 



Lentigen layer, 138 

 Lepisma saccharina, 48, 78 

 Leucocytes, 122 

 Lienard, 125 

 Ligament of the ovary, 159; of the 



testes, 162 

 Light-organs, 164 

 Limnlus polyphennis, 8 

 Lingua, 47 

 Linguatula, 14 

 Linguatulids, 14 

 Locusta viridissima, 128 

 Longitudinal veins, 64 

 Lubbock, 1 8, 48, 106 

 Lyonet, 104, 105, 106 



Mclndoo, 155 



Machilis alternata, 174 



Machilis, ommatidium of, 139; leg of, 



57; ventral aspect of, 77; the 



trachea? of, 116, 117 

 Malpighian vessels, 113; as silk-glands, 



H3 



Mandibles, 43 

 Marey, 81 



Marginal accessory veins, 69 

 Margins of wings, 59, 60 

 Maxillae, 43 

 Maxillary palpus, 44 

 Maxillary pleurites, 40 

 Maxillulae, 16, 43 

 May-beetle, heart of a, 121; leg of a, 



106 



May-fly, wings of a, 70 

 Mechanical sense-organs, 130 

 Media, 64 



Medial cross- vein, 71 

 Median caudal filament, 78 

 Median furrow, 74 

 Median plates, 55 

 Median segment, 49 

 Median sutures, 35 

 Medio-cubital cross- vein, 71 

 Megalopyge opercularis, cocoon of, 189 



