INDEX. 107 
Epistome of Polyzoa, 142 
Epistylis, 39 
Epithelium, 7 
Epizoanthus Americanus, 79 
Equus asinus, 605 
caballus, races of, 603 
hemionus, 604 
onager, 604 
Eretmochelys imbricata, 510 
Erimyzon oblongum, 448 
Escharina, 144 
Estheria Belfragei, 282 
Euchone elegans, 174 
Euplectellum aspergillum, 48 
Eupomotis aureus, 455 
Euprodps Dane, 302 
Eupyrgus, 210 
Eurypauropus, 338 
Eurystomer, 94 
Eustrongylus buteonis, 127 
chordeilis, 127 
gigas, 126 
papillosus, 127 
Evolution, 11 
Existence, Baeee for, 673 
Eye, 640. 
dorsal, of Mollusca, 237 
of blind craw-fish, 295 
of Crustacea, 270. 
of mollusks, 254. 
Fasciola HEPATICUM, 108 
Fauna, 661 : 
chief zoological, 666 
Favia, 80 
Feathers, 523 
Felis concolor, 617 
domestica, 617 
Fere, 614 é 
Fer-de-lance, 499 
Fertilization of egg, 644 
Fierasfer, 459 
Filaria hematica, 128 
Jentis, 128 
Filaria hematica, medinensis, 
127 
sanguinis-hominis, 128 
Fishes, see Pisces. 
Fishes, anatomy of, 484 
bony, 434 
characters of, 411 
climbing, 457 
development of, 445 
Elasmobranch, 414 
fins oil 
ganoid, 425 
lateral line of, 442 
mucous canal of, 442 
respiration of, 442 
sounds produced by, 
442 
spiracle of, 417 
teeth of, 416, 442 
viviparous, 418, 444 
Fish-hawk, 548 
Fish-lice, 297 
Fission in Planarians, 102 
Flabellum angulare, 80 
Flagellata, 31, 40 
Flamingo, 544 
Flea, 355 
sand, 391, 356 
snow, 344 
water, 279 
Flounder, 459 
Fluke-worms, 105 
Fly, bot, 355 
house, 354, 355 
Flying-fish, 453 
Foraminifera, 24, 27 
Forficula, 344 
Fossil jelly-fishes, 71 
sea-urchins, 125 
star-fishes, 116 
Frog, 487 
anatomy of, 470 
Fuligula vallisneria, 543 
Fungia, 82 
