INDEX 



947 



Draco, 702. 



Dracunculus, 242. 



Dragon-flies, 384, 407. 



Dragonet, 627. 



Dreissensia, 481. 



Drepanophorus, 233, 235. 



Droinaeognathous, 774. 



Dromasus, 770. 



Dromia, 164, 353. 



Drones, 377, 395. 



Drosophila, Mendelian studies on, 95. 



Duckmole, 836. 



Duct of Cuvier, 615. 



Ductus Botallii, 699. 



— - endolymphaticus, 548. 



Dugong, 845, 846. 



— and manatee compared, 846. 

 Duodenum, 601. 



— of rabbit, 802, 803. 

 Duplicidentata, 783, 867. 

 Dura mater, 543. 

 Dypus, 867. 



Eagle, hind limb of, 744. 



— pectoral girdle and breastbone of, 742. 

 Ear of Arenicola, 259. 



— of cat, 549. 



— of crayfish, 327. 



— of Myxine, 577. 



— of Vertebrates, 548, 548. 



— in Invertebrata, 548, 550. 

 Earthworm, 11, 245, 246. 



— anterior region of, 247. 



— development of, 255. 



— reproductive organs of, 253. 



— transverse section of, 251. 

 Earwigs, 384, 407. 

 Ecaudata, 677. 



Ecdysis or moulting of Arthropods, 321. 

 Echeneibothrium, 230. 

 Echidna, 3, 776, 833, 837. 



— pectoral girdle of, 834. 



— pelvis of, 836. 

 Echinocardium, 305. 

 Echinochrome, 303. 

 Echinococcifer, 229. 

 Echinococcus, 228, 229. 

 Echinocyamus, 305. 

 Echinoderma, 10, 11, 289. 



— contrast between the classes of, 315. 

 Echinoderms, development of, 316. 



— relationships of, 318. 

 Echinoidea, 300, 315. 

 Echinoneus, 305. 

 Echinorhynchus, 236, 243. 

 Echinus, 300, 305. 

 EchiuridoB, 244, 269. 

 Ecology of Birds, 759, 760. 



— of Coelentera, 209. 



— of Crustacea, 359. 



— of Gasteropoda, 477. 



— of Insects, 402. 

 — - of Protozoa, 143. 



— of sponges, 164. 

 Ectoderm, 46, 81, 83. 

 Ectoparasites, 212. 



Ectoplasm, 113. 

 Ectoprocta, 284. 

 Edentata, 843. 

 Edible bird's nest, 760. 

 Edrioasteroidea, 314, 318. 

 Edwardsia, 191, 196. 

 Eel, development of, 629. 



— larvae of, 88. 

 Effodientia, 843. 

 Egg, Amphibian, 80. 



— ■ diagrammatic section of, 767. 



— factors influencing development of, 79, 



80. 

 Egg-case of skate, 607. 



cell, 66. 



and sperm-cell, diagram showing 



relative size of, 74. 



shell, 67. 



Eggs of Arthropoda, 334, 335. 



— of Birds, 760. 



— of Gasteropoda, 476. 

 Eimeria, 149. 



Elaps, 709. 



Elasipoda, 310. 



Elasmobranch development, 606. 



— ■ development of nervous system of, 544. 



— embryo, section through, 559. 

 Elasmobranchii, 6, 548, 550, 5S8, 633. 

 ■ — ■ cranial nerves of, 600. 



Electric organs, 591. 



— potential in muscle, 30. 

 — - — in nerve, 30. 

 Eledone, 485, 486. 

 Elephant, skull of, 858. 

 Elephant's tooth shells, 478. 

 Elephas, 857, 859. 

 Eleutheria, 166. 

 Eleutherozoa, 289, 318. 

 Elginia, 720. 

 Elimination, 912. 



Elk, 852. 



Elpidia, 310. 



Elvers, migration of, 630. 



Embole, 81. 



Embryology, 66. 



— experimental, 79. 

 Embryonic stages, 86, 67. 

 Embryos of bird and man, 86. 



— Siamese twin, 80. 

 Emu, 4, 734, 770. 

 Enaliornis, 772. 

 Enamel, 554, 814. 

 Encystation, 112. 

 Endocrine glands, 36. 

 Endoderm, 46, 83. 

 Endolymph, 549. 

 Endomixis, 119, 143. 

 Endoparasites, 211. 

 Endoplasm, 113. 

 Endopodite (crayfish), 322. 

 Endostemite, 412. 

 Endostyle of Tunicates, 503. 

 Enoplidae, 239. 

 Entalium, 479. 

 Entamoeba histolytica, 145. 

 Enterocoele, 281. 



