INDEX 



133 



Pyrameis cardui, 96 



Eat- tailed maggot, 76 

 Eeaumur, E, A. F. de, 8, 28, 



33, 41 

 Eeproductive larvae, 90 ; pupae, 



91 



Eeproductive organs, 45 

 Ehabdophaga heterobia, 70 

 Eiley, C. V., 83 



Sanderson, E. D., 17 



Sand-midges, 78 



Sarcophaga, 91 



Saw-flies, 58-9 



Scale-insects, 20. See also Coc- 



cidae 



Scarabaeidae, 52 

 Schmidt, E. 0., 21 

 Scolytidae, 55 

 Scudder, S. H., 106 

 Seasonal changes, 89-104 

 Seasonal dimorphism, 102 

 Semi-pupa, 118 

 Sesiidae, 62 



Sexual differences, 15, 20-1, 90 

 Sharp, D., 13, 36, 40, 115 

 Silk-spinning, 58, 62-3, 82 

 Silkworms, 82 

 Silpha, 50 

 Siltala, A. J., 63 

 Silvestri, F., 119 

 Simulium, 78, 87 

 Smith, J. B., 17 

 Sphegidae, 66-7 

 Sphingidae, 60 

 Spinneret, 58 



Spiracles, 2, 23, 70, 72, 77, 86, 87 

 Spring-tails, 11 

 Stone-flies, 24, 107, 110 

 Sub-imago, 33, 117 

 Sucking insects, 17 



Swammerdam, J., 33 

 Syrphus, 74-6 



Tachininae, 73, 91 



Tenebrio molitor, 119 



Termitoxeniidae, 92 



Theobald, F. V., 100 



Thysanura, 11 



Tiger Moths, 59, 82, 98 



Timber-beetles, 54 



Tineidae, 62 



Tipulidae, 70 



Tortoiseshell Butterfly, 45, 95 



Tortricidae, 62 



Tracheal system. See Air- tubes, 

 Spiracles 



Transformation. See Metamor- 

 phosis 



Triassic insects, 107 



Trichocera, 70 



Trichoptera, 62-3, 76, 80, 86 



Tsetse Flies, 91 



Turnip-fly, 53, 92, 94 



Turnip Moth, 98-9 



Tussock Moths, 90, 97 



Vanessa urticae, 45, 95 

 Van Eees, J., 42 

 Vapourer Moth, 96-7, 115 

 Velia currens, 116 

 Verhoeff, K. W., 11 

 Vermiculiform larvae, 67, 71-6, 



111 



Virgin stem-mothers, 18 

 Viviparous reproduction. See 



Birth 



Wagner, N., 90 

 Warble-fly, 73-4, 89, 108 

 Warning coloration, 60 

 Wasmann, E., 92 

 Wasps, 46, 64, 66-7, 83 



