728 



INDEX 



Tergum, 87. 



Termen, 122. 



Termes, abdomen, 162 ; origin of wings 

 of, 140, 14:;. 



Termes flavipes, 64. 



Termopsis, 48, (i4. 



Testes, 487, 4H5 ; incipient eggs in the 

 germ of the testis, 504. 



Theory of incasement, 641. 



Thomas, on origin of scent-scales, 199. 



Thorax, 86, 95 ; gills on, 468. 



Thread-plate, 575. 



Thread, spiral, 444; origin of, 447, 448. 



Thyridium, 124. 



Thyridopteryx, 634. 



Thysanoptera, nymph of, 597. 



Thysanura, 72 ; cercopods of, 164 ; geni- 

 tal organs of, 486. 



Tibia, (16 ; formation of, in imago of Lepi- 

 doptera, 655. 



Tineid larva, wing-buds of, 652; wing- 

 germs of, 129. 



Tipula, 629; flight of, 151, 152; thorax 

 of, 91. 



Tissue, connective, 574. 



Tongue, 70. 



Torulus, 57. 



Trachea?, 431, 442; capillary, 655; distri- 

 bution of, 432; end-cells, 437 ; hairs in, 

 451; moulting of, 612; origin of, 553; 

 origin of, in worms, 442 ; size of, 433 ; 

 of wings, 144. 



Tracheal gills, of adult insects, 476; rec- 

 tal, 4ii3. 



Tracheal system, amphipneustic type, 

 462; apneustic type, 459; closed, 459: 

 holopneustic type, 459 ; metapneustic 

 type, 461 ; peripneustic type, 462; pro- 

 pneustic type, 462 ; reformation of, in 

 metamorphosis, 683. 



Tracheoles, 126, 653. 



Tract, optic, 253. 



Trajectory made by wings, 150. 



Tribolium, 617. 



Triehodes, tracks of, 110. 



Trichogen, iss. lii'.i, :iil(i. 



Trichoptera. 469; appendages, 550; de- 

 velopment of wings of, 142; embryol- 

 ogy of, 537; eversible glands of, 375; 

 haustellum of, 75; hypopharynx of, 

 74; pupal jaws of, 633; spinneret, 74. 



Trilobita, 5. 



Tritocerebrum, 231, 237. 



Trin nguline larva, 100, 693, 695. 



Trochanter, 496 ; divided, 97. 



Trochantine, 95. 



Trogoderma, 617. 



Trophi, 54, 59, 549. 



Trouvelot, on the moulting fluid, 610 ; 



process of moulting of Telea, 610; 



spinning of cocoon by Telea, 621. 

 Truxalis, 422. 

 Tubercles, 187, 192. 

 Tubes, egg, 501 ; ovarian, 501 ; urinary, 



316, 317, 348, 353, 572. 

 Tympanum, 289. 

 Typhlocyba, 616. 



Uljanin, on the sexual cells of the honey 

 bee, 582. 



Ungues, 96. 



Urauidin, 206. 



Urates, 352. 



Urea, 352. 



Urech, on pigments, 206, 208. 



Uric acid, 352. 



Urinary bladder, 351; tubes, 316, 317, 

 348 ; absent in Collembola, 353 ; excre- 

 tions of, 351 ; origin of, 572: primitive 

 number of, 352; solid contents of, 352. 



Urine, 206. 



Urite, 163. 



Uromeres, 163. 



Uro-patagia, 183. 



Urosome, 163. 



Urosternites, 163. 



Uterus, 507. 



Utrieuli, 487. 



Uzel, on the embryology of Campodea, 

 51, 53; premandibular segment in 

 Campodea, 51, 52. 



Vagina, 507. 



Valery-Mayet, on life-history of Sitaris, 



691. 



Vallisneri, on the cremaster, 637. 

 Valvule, cardiac, 312; proventricular, 



313; pyloric, 315. 

 Van Bemmelen, on colors, 208. 

 Vanessa antiopa, 638. 

 Vanessa io, 3<S1. 

 Vanessa urtica-, before pupation, 644; 



changes in nervous system during its 



metamorphosis, (146. 

 Van Rees, on post-embryonic changes of 



Mnscida-, 673, C,7I, <n(>. liMt. (is;;, (184. 

 Vas defereiis, 496; origin of, , r )79. 

 Vasa deferentia, 49ii; origin of, 579. 



