878 



IXDEX. 



meut 152, fixation of 

 larval Aiitedon 154. 

 affinities 160, asym- 

 metries 162. 



Echinodiscus 244 2 . 



Echino encrinns 309. 



Echinoidea 208, .shell 



208, ambitus, position 

 of anus, endocyelica 



209, apical system 



210, genital pores 210. 

 ambulacra! plates, in- 

 terambulacral plates, 



211, marginal plates 



212, exocyclica 212, 

 symmetry 213, mouth 



213, petals and pores 



214, marsupia, phyl- 

 lodes.floscelle plastron 

 216, labrum, sternum, 

 lunulae, water - pore 

 and genital plate 218, 

 genital openings 219, 

 apical system of Exo- 

 cyclica 217, 219, Lo- 

 ven's law 219, pedi- 

 cellariae 221, pedi- 

 cellariae function 224, 

 spines 225, fascicles 

 226, sphaeridia, lan- 

 tern of Aristotle 227, 

 perignathic girdle 

 228, aboral sinus, 

 sphaeridia 227, skin, 

 nervous system 228, 

 sense organs 229, body 

 wall 229, alimentary 

 canal, coelom 230, 

 water vascular system 

 231, perihaemal 

 system, gills axial 

 sinus 231, oral tube 

 feet 233, vascular 

 system 233, axial 

 organ, gonads, eggs 



234, care of brood, 

 larva, regeneration, 

 habits 234, affinities 



235, position of anus 



235, geological history 



236, classification 238, 

 Geological history of 

 Echinoidea, 236. 



Echinoids development 



150. 



Echinolampas 245 2 . 

 Echinometra 242 2 . 

 Echinoneus 245 '. 

 Echinopedina 241 J . 



Echinophthirius 662. 

 Echinoplax 545-. 

 Echinopluteus 234. 

 Echinopsis 241 '. 

 Echinosoma 240 1 . 



Echinosphaera 307, 308, 

 309. 



Echinostrephus 242 2 . 



Echinothrix 241 '. 



Echinothuria 240'. 



Echinozoa 303. 



Echinus 140, 143, 232, 

 242 1 , genital pores 

 210,apical system 211, 

 larva 140. 



Echthrogaleus 408 1 . 



Eciton 772, 773. 



Ecpolus 850-. 



Ecribellatae 821 '. 



Ectatosticta 820'. 



Ecteinascidia 38 2 . 



Ectinosoma 405 2 . 



Ectobia 667 -'. 



Ectobranchiata 239-240 



Ectoneural 123. 



Ectotrophi 658. 



Edotia 488 2 . 



Edrioaster 310. 



Edrioasterida 310. 



Edriophthalmata 496 2 . 



Egg of ants 771, Arthro- 

 poda 339, Echinoids 

 234, Tunicata 19. 



Eggar-moth 717 2 . 



Egidia 501 l . 



Eiconaxius 538'. 



Eisothistos 488-. 



Elaeacrinus 312. 



Elaeoblast 51, of Dolio- 

 lum 57, of Pyrosoma 

 43 2 . 



Elaphocaris stage 529 2 . 



Elasipodidae 267 1 . 



Elasmonotus 542 1 . 



Elater, antenna 618. 



Elateridae 732 2 . 



Eleleis 822 1 . 



Eleutherocrinus 311, 

 313. 



Eleulherozoa 303. 



Elm-beetle 736-'. 



Elminius 425 2 . 



Elpidia 267 2 , stone- 

 canal 254. 



Elytra 614. 



Elytrophora 408'. 



Embia 683 2 . 



Embidopsocus 678 1 . 



Em bi id tie 683. 



Embioptera 683. 



Emperor-moth 714 1 . 



Empidae 748-. 



Empodium 621. 713% 

 740. 



Empusa 669 1 . 



Enallagma 688-. 



Enallocrinus 295. 



Encentridophorus 850 2 . 



Enchenopa 697 '-. 



Encope 244 2 . 



Encrinasteriac 188. 



Encrinns 298 2 , apical 

 nerves 284. 



Encyrtus, ovipositioii 

 and embryonic fission 

 641. 



Endeis 784. 



Endite 344. 



Endobranchiata 239 2 . 



Endocyclica 208. 



Endoniychidae 730 '. 



Endoneural 123. 



Endopodite 344. 



Endopterygota 655, 701 



Endosternum Limulus 

 316. 



Endostyle 8, develop- 

 ment of 22. 



Endromis 718'. 



Eneopterinae 675 1 . 



Engaens 536-. 



Ennychia 720 '. 



Enoicycla 707 '. 



Enoplometopus 536 1 . 



Enterocoel 143. 



Enterocola 406-. 



Enterognathus 406-. 



Enteropneusta 66. coe- 

 lom 66, 80. 87, 89, 

 affinities 67, 100 1 , 

 classification 67, skin 



69, nervous system 



70, alimentary canal 

 74, notochord"75, 85, 

 branchial organs 76, 

 central complex of 

 proboscis 84.- heart 86, 

 muscles 90, connect- 

 ive tissues 91, vas- 

 cular system 92, go- 

 nads 93, ova 95, 

 development 9o, hab- 

 its 100. odour 100, 

 parasites 101, rela- 

 tion of gonads to 

 coelom, chordate fea- 

 tures 101, segmenta- 

 tion 101, variability 



