588 



INDEX 



Diplospondylii, 506 

 I liplozoon, 154, 244 

 Dipneumonia, 513 

 ] (ipnnunones, 396 

 Dipneusti, 512 

 1 )ipnoi, 512 

 Diporpa, 154, 244 

 Diprotodon, 561 

 1 Hprndonta, 561 

 Diptera, 430 

 Dipylidium, 2-5 

 Directive corpuscles, 131 

 Directives, 227 

 Discina, 290 

 Discodermia, 204 

 Discodrilidae, 271; 

 Disco medusae, 223 

 Disconanthse, 220 

 Discophori, 281 _ 

 Dispermy, 135 

 Distaplia, 446 

 Distomeze, 245 

 Distomum, 105, 243, 246- 

 Distribution of animals, 33 

 Disuse of parts, 47, 89 

 Division of labor, 63, 155 

 Division, reproduction by, 



128 



Divaricator muscles, 2.SS 

 Dochmius, 266 

 Docoglossa, 333 

 Doctrine of causes, 34 

 Dodo, 543 

 Dogfish, 506 

 Dogs, 565 

 Dolichonyx, 544 

 Doliolum, 448 

 Dolomedes, 396 

 Dolphins, 572 

 Dominant, 138 

 Dondersia, 316 

 Doris, 335 

 Dorsal aorta, 483 



fin, 462, 497 



root, 468 

 Dorylinae, 427 

 Doryphora, 424 

 Double animal, 154 

 Draco, 529 

 Dranculus, 26$ 

 Drepanidotaenia, 255 

 I )rom;i'Us, 542 

 Dromatherium, 559 

 1 )roni>s, 417 

 Duckbill, 559 



Ducks, 543 



Ducts of cuvier, 484 



genital, 108 



Botallii, 485, 518 



cochlearis, 479 



choledochus, 481 



ejaculatorius, 109 

 Dugong, 570 

 Duodenum, 554 

 Duplicidentata, 566 

 Dura mater, 473 

 Dysodont, 318 

 Dytiscidae, 424 



Eagles, 544 

 Ear bones, 461, 479 

 Ear conch, 480 

 Ear drum, 479 

 Ears, 116 



vertebrate, 477 

 Earth worms, 279 

 Earwig, 421 

 Ecardines, 290 

 Echidna, 559 

 Echinarachnius, 306 

 Echinobothrium, 254 

 Echinocardium, 306 

 Echinoderida.% 260 

 Echinoderma, 291 

 Echinoidea, ;o; 



7 \J \J 



Echinorhynchus, 269 

 Echinospha?riles, 303 

 Echiuroidea, 281 

 Echiurus, 281 

 Ecdysis, 350 

 Eciton, 427 

 Ectoblast, 146 

 Ectobronchi, 538 

 Ectocyst, 285 

 Ectoderm, 91, 94, 146 

 Ectethmoid, 458 

 Ectoparasites, 157, 242 

 Ectoprocta, 285 

 Ectosarc, 172 

 Edentata, 563 

 Edrioasteroidea, 302 

 Edriophthalmata, 383 

 Edwardsia, 226, 230 

 Edwardsiella, 230 

 Eels, 510 

 Efferent branchial arteries, 



504 

 Egg cell, 71 



cleavage of, 141 

 fertilization of, 134 



Egg, maturation of, 132 



nucleus, 132 



sacs, 369 



segmentation of, 141 



tooth, 525 

 Eimeria, 188 

 Eimer's organs, 473 

 Elaps, 531 

 Elasipoda, 308 

 Elasmobranchs, 504 

 Elastic cartilage, 77 

 Elastic tissue, 76 

 Elastica externa, 452 

 Elastin, 75 

 Elaters, 181 

 Electric organs, in 

 Elephant, 570 

 Elephantiasis, 268 

 Elephas, 570 

 Eleutheria, 200 

 Elysiidae, 335 

 Elytra, 276, 408 

 Embiotocidas, 511 

 Embryo, 150 

 Embryology, 127 

 Emu, 542 

 Enamel, 451, 494 

 Enchytrseidas, 279 

 Endites, 361 

 Enrlocyst, 285 

 Endolymph, 116, 479 



duct, 477 

 Endopodite, 360 

 Endostyle, 443 

 English sparrow, 544 

 Enhydris, 565 

 Ensatella, 324 

 Entalis, 325 

 Entamoeba, 173 

 Entelops, 563 

 Enterocoele, 99, 480 

 Enteropneusta, 448 

 Enteroxenus, 308 

 Entoblast, 146 

 Entobronchi, 538 

 Entocolax, 308 

 Entoconcha, 308 

 Entoderm, 94, 146 

 Entomostraca, 363 

 Entoniscus, 385, 386 

 Entoparasites, 157, 242 

 Entophaga, 425 

 Entoplastron, 527 

 Entoprocta, 284 

 Entosarc, 172 



