552 



COMPARATIVE ANATOMY 



Distoma isostomum, 134 > intestinal and 



nervous system, 143 

 ,, lanceolatum, 134 > sexual organs, 



158 



Dochmius duodenalis, 180 

 Dorippe, 299 



Doropygus porcicauda, trunk feet, 316 

 Dorsdbranchiata, 182 

 Doyeria simplex, head, 544 

 Drassus, 510 

 Drepanophorus, 178 



,, Lankasterii, nervous sys- 



tem, 216 

 Dromia, 299 

 Dwarf males (Cirripedia), 305 ; (Crustacea 



generally), 377 

 Dysderidce, 510 

 Dysmorphosa carnea, 68 

 Dytiscidce, 44% 

 Dytiscus, section through ocellus, 470 



EARTHWORM, see Lumbricus 

 Ecardines, 185 

 Ecdysis, 458 

 Echinococcus, 172 



,, veterinorum, 135 



Echinodera, 186 

 Echinoderm, 119 

 Echinorhynchus, 180 ; genital organs, 257 ; 



organisation, 258 

 ,, gigas, 180 



Echiuridce, 182 



Echiurus, enteric canal, vascular system, 

 and nephridia, 207; nervous system, 

 223 



Ectoparasitica, 134 

 Ectoplasm, 13 

 Ectoprocta, 184 

 Ectosarc, 13 

 Edriophthalmata, 293 

 Edwardsia, 71 



Eggs, animal, 25 ; parthogenetic, 32 ; 

 segmentation, 121-131 ; summer (Crust- 

 acea), 376,'382 ; types of, 27-32 ; winter 

 (Crustacea), 376, 382 

 Elateridce, 442 



Elytra (Vermes), 189 ; (Antennata), 441 

 Embidce, 439 

 Embole, 123 

 Empidce, 44$ 



Empis stercorea, nervous system, 466 

 Enchytrceidce, 181 

 Ency station, 16 

 Endite, 315 

 Endomychidce, 441 

 Endoparasitica, 134 

 Endoplasm, 13 

 Endopodite, 307 

 Endosarc, 13 

 Enoplidce, 178 

 Entomostraca, 288 

 Entoniscus, 296 

 Entoprocta, 184 



Epeira, 510 



Ephe?neridce, 439 ; sexual organs, 485 ; 



larva, 483 

 Ephippigera, 463 

 Ephippium, 380 

 Ephyra, 72 

 Epibole, 124 

 Epimerit, 9, 16 

 Epipodite, 315 

 Epistylis, 11 



Equitidce, 442 



Erichthus larva, 393, 394 

 Eriphia, 300 

 Errantia, 182 

 Erscea, 70, 113 

 Eschara, 184 

 Estheria, 288 

 Eucharis, 72 

 Eucone eyes, 470 

 Eucope campanulata, 68, 74, 102 

 Eucopepoda, 290 



Eucopia australis, posterior maxillae, 313 

 Eudendrium ramosum, 68 

 Eudorina, 8 

 Eudoxia, 70, 113 

 Eudrilus, 181 

 Euglena, 8 

 Eulimnadia Agassizii, 2d antennae, 310 



,, texana, 2d antennas, 310 



Eunice limosa, 188 

 Eunicidce, 182 

 Eupagurus, 298 

 Euphausia pellucida, 2d antennae, 310 ; 



anterior maxillae, 312 ; nervous system, 



346 ; pleopoda, 325 

 Euphausidce, 298 ; larval history, 389 ; 



larvae, 390 

 Euphrosyne, 182 

 Euplectella, 61 

 Euplotes, 9 

 Eupomatus uncinatus, egg segmentation, 



123 ; larva, 269 

 Euprepiadce, 44% 

 Eurylepta, 133 

 Eurypteridce, 415 

 Euscorpius, 509 



,, italicus, eye, 521 

 Euspongia qfficinalis, 62 

 Eustrongylas gigas, 180 

 Evadne, 290 

 Evaniadce, 442 

 Exogone, 182 

 Exopodite, 307 

 Exotheca, 99 

 Exumbrella, 73 

 Exuvia, 458 

 Eye-spots (Cnidaria), 75, 97 ;' (Protozoa), 



18 ; x-shaped (Crustacea), 352 ; (Pla- 



todes), 169 



FABRICIA, 234 

 Facet-eyes, 470 

 Falces, 515 



