718 



INDEX. 



Trochus, development of, 2G4 



Trout, 453 



Trunk fish, 403 



TryfToii, 434 



Tubularia, CO 



Tubipora, 8o 



Tiinicata, development of, 203, 311 



structure of, 196, 315 

 Tiirbellaria, 143, 163 

 Tardus migratorius, 558 

 Turkey, wild, 546 

 Turtle, green, 510 



hawkbiU, 510 



loggerhead, 510 



sea, 510 



snapping, 510 



soft-shell, 510 



swamp, anatomy of, 506 



tortoise shell, 510 

 Tylenchus scandeus, 170 

 Tylos, ;^08 



Typhlocolas acuminata, 145 

 Tyroglyphus sacchari, 360 



ULOCYATnUS AECTICUS, 80 

 ITmbellularia greenlandica, 8j 

 Ungulata, COO, 639 

 Unio complanatus, 344 

 Urchins, sea, 117 

 XTrodela, 478, 484, 488 

 Ilrolabes palustris, 170 

 Ursus americanus, 616 



arctos, 610 



maritimus, 616 

 XTrus, 613 

 Uvella, 33 



Varands, 504 



Variation of species, 073 



Veliger stage of molluscs, 353 359 



363, 366 

 Velum of rotifers, 176, 178 

 Venus mercenaria, 340 

 Vermes, characters of. 138 

 classification of, 338 

 Vertebra, 395 



Vertebral a, characters of, 389 



classification of, 630 



brain of, 393 



ear of, 405 



eye of, 404 



hair of, 403 



limbs of, 396 



notochord of, 393 



scales of, 403 



skeleton of, 395 



skull of, 397 



teeth of, 401 

 Vertebrates, relations of ascidians 

 to, 307, 314 



molluscs to, 341 



worms to, 314, 319, 239 

 Vespertllio subulatus, 591 

 Vinegar worm, 170 

 Viper, 499 

 Vipera, 499 

 Vitellogene, 147 

 Viviparous fishes, 444 



reptiles, 495 



sea-urchins, 131, 133 



starfish, 110, 114 

 Vorticella, 39 

 Vulture, 548 



Walrus, 614 

 Wapati, 608 

 Wasp, 380 

 Water bear, 361 

 Water flea, 399 

 Watering-pot shell, 350 

 Wax wing, 555 

 Whale, 591 



fishery, 594 



sperm, .593 



bone, 593 



white, 595 

 Whale's tongue worm, 319 

 Whelk, 268 

 White ant, 367 

 Worms, 138 



flat, 141 



fluke, 140 



