INDEX. 



703 



Decapoda, 312, 325 



Cephalopoda, 280 

 Deer, 608 



Deltocyathus Agassizii, 80 

 Dendroccela, 145 

 Dendroccelum lacteum, 141, 144 



percsectun, 142 

 Dendrceca vireus, 555 

 Dentalium, 257 

 Desuiosticha, 126 

 Devil-fish, 424 

 Diatryma, 540 

 Dibranchiata, 280, 284 

 Dicyema, 139 

 Dicyemella, 140 

 Dicynodou, 512 



tigriceps, 512 

 Didelphia, 571, 628 

 Didelphys Virginiana, 575 

 Didus ineptus, 547 

 Diemyctylus viridescens, 481 

 Differentiation, 6 

 Digestion, organs of, 631 

 Digestive canal, 9 

 Dimorphism, 654 

 Dingo, 617 



Dinichthys Torrelli, 431 

 Dinornis giganteus, 538 

 Dinosauria, 515, 517 

 Dinotheriurn, 599 

 Diomedea exulans, 542 



fuliginosa, 542 

 Diploria cerebriformis, 80 

 Diplozoon paradoxum, 152 

 Dipnoi, 425, 426, 428 

 Diptera, 375, 386 

 Discina, 193 

 Discophora, 62, 72 

 Dispersal of animals, 660 

 Distomum crassum, 151 



development of, 147 



heterophyes, 151 



lanceolatum, 151 



macrostomum, 152 



ophthalmobium, 151 

 Distribution, geographical, 658 



Dodo, 547 

 Dog-fish, 420 



shark, 420 



Dog, varieties of, 617 

 Doliolum, 201, 208 

 Dolphin, 455 

 Doris, 265 



Dorosoma cepedianuin, 443 

 Dove, 547 

 Drum-fish, 443 

 Duck, black, 543 



canvas-back, 543 



eider, 543 



summer, 543 

 Dugong, 596 

 Dysmorphoaa, 60 



EAGLE, bald-headed, 548 

 Ear, 641 ; of clam, 245 



of Crustacea, 291 

 Ears of mammals, 563 

 Earwig, 368 

 Earth worm, anatomy of, 223 



embryology of, 230 

 Ecardines, 196 

 Echeneis remora, 454 

 Echidna hystrix, 573 

 Echinarachnius parma, 123 

 Echinococcus, 159 

 Echiuoderes, 179 



Echinoderuiata, blood system of, 

 100, 130 



characters of, 96 



direct 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 

 Echinorhyuchus augustatus, 1(>6 



claviceps, 166 



