706 



INDEX. 



Duck, summer, 543 

 Dugong, 596 

 Dysmorphosa, 60 



EAGLE, bald-headed, 548 

 Ear, 641 



of clam, 225 



of Crustacea, 271 

 Ears of mammals, 563 

 Earwig, 344 

 Earthworm, anatomy of, 167 



embryology of, 168 

 Ecardines, 196 

 Echeueis remora, 454 

 Echidna hystrix, 573 

 Echinarachnius parma, 205 

 Echinococcus, 117 

 Echinoderes, 137 

 Echinodermata, blood system of, 

 182, 212 



characters of, 178- 



direct development of, 

 196, 203, 215 



" heart" of, 182, 186 



metamorphoses of, 188, 

 194, 202 



nervous system of, 179, 

 186 



skeleton of, 179, 200 



viviparous, 192, 203, 204 



water- vascular system of, 



181, 212 



Echinoidea, 199r-808 

 Echinorhyncnus angustatus, 124 



claviceps, 124 

 Echinorhynchus gigas, 123 

 Echinus, 199 



esculentus, 205 

 Echiurus, 162 

 Eciton, 363 

 Ectoderm, 6 

 Ectoprocta, 146 

 Educabilia, 582, 591 

 Edentata, 577, 629 



Edible Holothurians, 217 



sea-urchin, 205 

 Edwardsia, 78 

 Eel, breeding habits of, 446 



conger, 446 



sound produced by, 444 

 Eel pout, 458 

 Eggs, winter, of Crustacea, 280 



Planarians, 103 



Polyzoa, 145 



Rotatoria, 136 



Elasmobranchii, characters of, 

 414, 463 



development of, 418 



eyes of, 417 



teeth of, 416 

 Elaps, 497, 678 

 Elasmosaurus platyurus, 513 

 Electrical eel, 450 



fish of the Nile, 449 



ray, 422 

 Elephant, 597 

 Elephas, 597 



primigenius, 598 

 Elk, 608 

 Elytra. 352 

 Embryology, 13, 643 

 Encrinites, 183 

 Encrinus liliformis, 219 

 Endocyst, 139 

 Endoderm, 6 

 Endostyle, 389 

 Enneacanthus obesus, 456 

 Enopla, 157 



Enteropneusta, development of, 

 158 



structure of, 157, 159 

 Entomostraca, 277, 305 

 Entoprocta, 146 

 Eohippus, 602 

 Epeira vulgaris, 343 

 Ephemera, 348 

 Epigonichthys cultellus, 408 

 Epipodium of mollusks, 238 



