5SS 



IXDEX 



Diplospornh'lii, 506 

 Diplozoon, 154, J44 

 Dipncumonia, 513 

 Dipncumones, 390 

 Dipneusli, 51; 

 Dipnoi, 51J 

 Diporpa, 154. 244 

 Diprolodon, jCu 

 DiproilonUi, 5C11 

 Piptera, 430 

 Pipyliilium, 255 

 Diredive corpuscles, 131 

 DirectiN'cs, 227 

 Discina, 200 

 Discotlerinia, 204 

 Discoclrilidic, 271) 

 Discoraedusx, 223 

 Disconanlha", 220 

 Discoplioi'i, 2S1 

 Disperni\', 135 

 Distaplia, 446 

 r)istoniea\ 245 

 Distomum, 105, 243, 246 

 Distribution of animals, 33 

 Disuse of parts, 47, S'j 

 Division of labor, O3, 153 

 Di\asion, reproduction by, 



12S 

 Divaricator muscles, 2SS 

 Dochmius, 266 

 Docoglossa, 333 

 Doctrine of causes, 34 

 Dodo, 543 

 Dogfish, 506 

 Dogs, 565 

 Dolichonyx, 544 

 Doliolum, 44S 

 Dolomedes, 306 

 l^olphins, 572 

 Dominant, 138 

 Dondersia, 316 

 Doris, 335 

 Dorsal aorta, 4S3 



fin, 462, 407 



root, 46 S 

 Dorylina:, 427 

 Dor)-phora, 424 

 Double animal, 1^4 

 Draco, c;2ij 

 Dranculus, 26S 

 Drepanidola-nia, 255 

 Droma-us, 542 

 Dromatherium, 550 

 Drones, 417 

 Duckbill, 539 



Ducks, 543 



Ducts of cuvicr, 4.S4 



genital, loS 



liotallii, 4S5, 51S 



cochlearis, 470 



choledochu^, 4S1 



ejaculatorius, 100 

 Dugong, 370 

 Duodenum, 534 

 Duplicidentala, 566 

 Dura mater, 473 

 D\'sodont, 31S 

 Dytiscida', 424 



Eagles, 544 

 Ear bones, 461, 470 

 Ear con(.h, 4,'-'o 

 Ear drum, 470 

 Ears, 116 



vertebrate, 477 

 Eartli vorms, 279 

 Earwig, 421 

 Ecarilincs, 2()0 

 Echidna, 359 

 Echinarachnius, 306 

 Echinobothrium, 254 

 Echinocardium, 30O 

 EchinodcriiUr, 2 00 

 Echinoderma, 291 

 Echinoidca, 303 

 Echinorhynchus, 269 

 Echinosphtcritcs, 303 

 Echiuroidea, 281 

 Echiurus, 281 

 Ecdysis, 350 

 Eciton, 427 

 Ectoblast, 146 

 Ectobronchi, 53S 

 Ectocyst, 285 

 Ectoderm, qi, 04, 146 

 Ectelhmoid, 438 

 Ectoparasites, 1 37, 242 

 Ectoprocia, 285 

 Ectosarc, 172 

 Edentata, 363 

 Edrioasteroidea, 302 

 E(lrio])hthalmala, 383 

 Edwardsia, 2^(\ 230 

 Edwardsiella, 230 

 Eels, 310 

 Ellercnt bram liial arteries 



304 

 Egg lell, 71 



cleavage of, 141 



fertilization of, 134 



Egg, maturation of, 132 



nucleus, 132 



sacs, 369 



segmentation of, 141 



tooth, 525 

 Eimeria, 188 

 Einter's organs, 473 

 Elaps, 531 

 Elasipoda, 308 

 Elasmobranchs, 304 

 Elastic cartilage, 77 

 Elastic tissue, 76 

 Elastica externa, 432 

 Elastin, 73 

 Elaters, 181 

 Elct trie organs, r 1 1 

 Elephant, 570 

 Elephantiasis, 268 

 Elcfihas, 570 

 Eleutheria, 200 

 Elysiida', 333 

 Elytra, 276, 408 

 Embiotocida', 511 

 Embryo, 130 

 Embryology, 127 

 Emu, 542 

 Enamel, 43r, 404 

 Ench\"tnci(ke, 279 

 Endites, 361 

 Endocyst, 2S3 

 Endolvmi")h, 116, 479 



duct, 477 

 Endopodite, 3O0 

 Endostvle, 443 

 English sjiarrow, 544 

 Enhydris, 363 

 Ensalella, 324 

 Entalis, 325 

 Entania-ba, 173 

 Entelops, 563 

 Enterococle, 99, 4S0 

 Enleropneusta, 44S 

 Enteroxcnus, 30S 

 Enloblast, 14O 

 Entolironchi, 33S 

 Enlocolax, 308 

 Enloconcha, 308 

 Entoderm, 94, 146 

 Entomoslraca, 3O3 

 l-mtonisius, 383, 386 

 I'mtoparasitcs, 137, 242 

 Entophaga, 423 

 Entoplastron, 527 

 Entoprocta, 284 

 Entosarc, 172 



