550 



INDEX 



Dictyuidae, 352, 353, o9S 



Digestive system, = alimentary canal, q.r. 



Dikelocephalus, 2If7 



Dimorphism, high and low ; in Decapoda, 



103 ; in Tanaids, 123 

 Dlndyvune, 231 

 Dinopinae, ^^6* 

 Dinopis, 410 

 Dinorhax, 4^9 

 Diogenes, 181 

 Dionide, 24o 

 Diphascon, 485 ; D. aljnniim, 487 ; D. 



angustatum, 487 ; D. hullatum, 487 ; 



D. chilenense, 486, 487 ; D. ocidatum, 



487 ; D. scotioum, 487 ; D. spitzbergense, 



487 

 Diplocentrinae, 306, S07 

 DipJocentrv-S, 307 

 iJiplocephalus bicephcdiis, 405 

 Diplostichous eyes, 301 

 Diplura, 390 

 Dipluriuae, 390 

 Dipoena, 403 

 Discoarachne, 512, 535 

 DistriViutiou, of Crustacea, 197 f. ; (strati- 

 graphical) of Trilobites, 222 

 Dorteiu, on eyes of deep-sea Crustacea, 



148, 150 

 Dohrn, 504, 513, 519 

 Doleschall, 365 

 Dolicho2}terus, 283, 291 

 Doliomelus, 415 

 Dolomedes Jimbriatus, 410 

 Dolo2}S, 78 

 Domed webs, 350 

 Donachochara, 4O6 

 Donnadieu, 457 

 Dorippe, 185, 188 

 Dorippidae, 188 

 Doropygus, 60 ; D. pulcx, 66 

 Dorsal organ, of Phyllopoda, 22 ; of 



Cladocera, 39 

 Doublure, 232 

 Doyere, on Tardigrada, 481 ; on their 



systematic position, 483 

 Doyeria, 485 ; D. simplex, 480, 487 

 Drassidae, 324, 396 

 Drassiuae, 396 



Drassus, 397 ; D. lapidosus, 396, 397 

 Drepanothrix, 53 

 Dromia, 184 i D. vulgaris, 184 

 Dromiacea, 183 ; metamorphosis, 182 ; 



relation to Macrura, 184 ; habitat, 198 

 Dromidiu, distribution, 200 

 Dromiidae, IS4 

 Dryiiiusn, 393 

 Dufour, 385 

 Dujardin, 464 n. ; on systematic position 



of Tardigrada, 483 

 Duplorbis, 95; I), calathurae, 99 

 Dynomene, IS4 

 Dyuomenidae, 184 



hysdera, 394 » D. cambridgii, 394 ; D. 



crocota, 395 

 Dysderidae, 317, 319, 336, 394 

 iJysderiaa, 394 

 Dysderinae, 394 



Ebalia, 188 



Echiniscoides, 485 ; E. sigismundi, 477, 

 486 



Echiniscus, 480, 485 ; E. arctomys, 486 ; 

 E. glculiator, 486 ; E. granulcdMs, 486 ; 

 E. islandicus, 486 ; E. muscicola, 486 ; 

 E. mutabilis, 486 ; E. oihonnne, 486 ; 

 E. quadrisp)inosus, 486 ; E. reticulatus, 

 486 ; E. spinulosus, 479 ; E. spitzberg- 

 ensis, 486 ; E. testudo, 478 ; E. toendti, 

 486 



Echinoderms, Dendrogaster parasitic on, 

 94 



Echinognathus, 283 



Ecribellatae, 385 



Ectatosticta davidi, 393 



Edinosoma, 62 



Edriophthalmata, 112, 121 



Eggs, of Phyllopoda, 32 ; of Cladocera, 

 44 ; of Copepoda, 59, 62, 66, 67, 71, 

 74 ; of Branchinra, 77 ; of Syncarida, 

 114 ; of Peracarida, 123 ; of Hoplo- 

 carida, 141 ; of Eucarida, 144 ; of 

 Trilobites. 238 ; of Limulus, 275 ; of 

 Pedipalpij 309 ; of Spiders, 358 ; of 

 Solifugae, 424 ; of Pseudoscorpions, 

 434 ; of Phalangidea, 442 ; of Acarina, 

 456 ; of Tardigrada, 478 ; of Penta- 

 stomida, 493 ; of Pycnogons, 520 



Ehrenberg, on systematic position of 

 Tardigrada, 483 



Eleleis crinita, 396 



Ellipsoceplutlns, 224, 235, 347 ; E. hoffi, 

 248 



Embolobranchiata, 258, 259, 297 f. 



Emmerich, on facial suture of Trinucleus. 

 226 



Encep)haloides, 193 ; E. armstrongi, 192, 

 193 ; habitat, 205 



Encrinuridae, 251 



Encrinurus, 227, 235, 251 



Endeis didactyla, 534 ; E. gracilis, 539 ; 

 E. spinosus, 541 



Endite, 9, 10 



Endopodite, 9, 10 ; of Trilobites, 237 



Endosternite, 257, 305, 330 



Endostoma, of Eurypterus, 287 



Engaeus, 157 ; E.fossor, distribution, 213 



Enoplectenus, 4I8 



Enterocola, 67 ; E. fulgens, 67 



Entomostraca, defined, 6 ; diagnosis, 18 ; 

 of littoral zone, 197; fresh - water, of 

 southern hemisjihere, 216 



Entoniscidae, 130, 134 



Enyo, 400 



Envoidae, 399 



