706 



INDEX. 



Duck, summer, 543 

 Dugong, 596 

 Dysmorphcsa, 60 



Easlb, bald-headed, 548 

 Ear, 641 



of clam, 225 



of Crustacea, .271 

 Ears of mammals, 563 

 Earwig, 844 

 Earthworm, anatomy of, 209 



embryology of, 210 

 Ecardines, 196 

 Echeneis remora, 454 

 Echidna hystrix, 573 

 Echinarachnius parma, 123 

 Echinoooccus, 159 

 Echinoderes, 179 

 Echinodermata, blood system of, 

 100, 130 



characters of. 96 



dli'ect development of, 

 114, 121, 133 



"heart "of, 100, 104 



metamorphoses of, 106, 

 112, 120 



nervous system of, 97, 

 104 



skeleton of, 97, 118 



viviparous, 110, 121, 122 



water-vascular system of, 

 99, 130 

 Echinoidea, 117, 126 

 Ecbinorhynchus angustatus, 166 



claviceps, 166 

 Ecbinorhynchus gigas, 165 

 Echinus, 117 



esculentus, 123 

 Ecbiurus, 204 

 Eciton, 363 

 Ectoderm, 6 

 Ectoprocta, 188 

 Educabilia, 582, 591 

 Edentata, 577, 629 



Edible Holothurians, 135 



sea-urchin, 123 

 Edwardsia, 78 

 Eel, breeding habits of, 446 



conger, 446 



sound produced by, 444 

 Eel pout, 458 

 Eggs, winter, of Crustacea, 280 



Planarians, 145 



Polyzoa, 187 



Rotatoria, 178 

 Elasmobranchii, characters of, 

 414, 463 



development of, 418 



eyes of, 417 



teeth of, 416 

 Elaps, 497, 678 

 Elasmosaurus platyurus, 513 

 Electrical eel, 450 



ash of the Nile, 449 



ray, 422 

 Elephant, 597 

 Elephas, 597 



primigenius, 598 

 Elk, 608 

 Elytra, 352 

 Embryology, 13, 643 

 Encrinites, 101 

 Encrinus liliformis, 187 

 Endocyst, 181 

 Endoderm, 6 

 Endostyle, 199 

 Enneacanthus obesus. 456 

 Eoopla. 199 



Enteropnensta, development of. 

 200 



structure of, 199, 201 

 Entomostraca, 277, 305 

 Entoprocta, 188 

 Eohippus, 602 

 Bpeira vulgaris, 343 

 Ephemera, 348 

 Epigonichthys cuitellus, 408 

 Epipodium of moUusks, 283 



