220 



INDEX 



Taste and smell, organs of, 132 



Tegmina, 59 



Tegula, 54 



Telson, 75 



Tenent hairs, 58, 100, 101 



Tentorium, 96 



T -gites, 35 



T\rgum, 34 



Terminal filament, 158 



Termites, 158, 194 



Termitoxinia, 156 



Testes, 160 



Testicular follicle, structure of a, 161 



Thalessa lunator, 169 



Thorax, 48; diagram of, 50, 51 



Thyridopteryx ephemerceformis, wings 



of, 61 



Thysanoptera, 178 

 Tibia, 57 



Tipula abdominalis, larva of, 2 

 Touch, organs of, 131 

 Tower, 99, 172 

 Townsend, Miss, 165 

 Toxicognaths, 21 

 Tracheae, 113, 116; the structure of 



the, 117 

 Tracheal gills, 119; the development 



of, 182 



Tracheoles. 113, 118 

 Transverse conjunctivas, 34 

 Tremex Columba, 169 

 Trichogens, 30 

 Trichopore, 32, 130 

 Tritocerebrum, 47, 124 

 Trochanter, 57 



Trochantin, 53 ; of the mandible, 40 

 Tympana, 145 



Ungues, 58 



Vagina, 159 



Van Rees, 202 



Vas deferens, 156, 162 



Venomous setae and spines, 100 



Ventral diaphragm, 163 



Ventral heart, 163 



Ventral sympathetic nervous system, 



127 



Ventriculus, in 

 Verhceff, 49 

 Vermiform, 185 

 Verson, 114, 199 

 Vertex, 39 

 Viallanes, 47 



Visual cell, structure of a, 137 

 Vitellarium, 158 

 Vitreous layer, 138 

 Viviparity. 192, 193 

 Viviparous insects, 191 ; adult agamic 



females, 192 

 Vogel, 155 

 Von Siebold, 145 



Wagner, Nicholas 192 



Wax-glands, 102 ' 



Weisman, 202, 203 



Wings, 58; the development of, 182, 



195 



Wings of the heart, 121, 162 

 Wing-veins, reduction of the number 



of, 65; the chief branches of the, 64; 



the increase of the number of. 68; 



the principal, 64 

 Wollaston, 88 



Xiphosura, 8 



