INDEX 



G7T 



biotus, 243 ; of Afembranipora, 388 ; of 

 Newt, experiments on, 660 ; of 1'olu- 

 dina, 310 ; of Pedicellina echinata, 399 ; 

 of Peripatus cafiensis, 171 ; of Pol;/- 

 gordius, 132, 139 ; of Sagitta bipunctatu, 



429 ; of Synapta digitata, 531 ; of Tere- 

 bratulina septentrionalis, 409 ; of Urticina 

 crassicornis, 77 



Gastrulation in embryo of A mphioxus lanceo- 

 latus, 589 ; in embryo of Ascaris meyaloce- 

 phala, 444 ; in embryo of Aurelia, 68 ; 

 in embryo of Callidina russeola, 422 ; in 

 embryo of Cynthia partita, 616, 617 ; de- 

 fined, 68 ; in embryo of Dentalium, 328 ; 

 in embryo of Dreissensia, 335 ; in embryo 

 of Patella, 295, 297 ; in Peripatus capensis, 

 171 ; in embryo of Phascolosoma, 375 ; 

 in embryo of Urticina crassicornis, 78 



Gemmule of Spongilla and Ephydatia, 47 



Generative cell, formation of, in Polyphemus, 

 194 



Genital bnrsa of Aiiiphium squamata, as 

 womb, 484 



Genital cells, development of, in Ascaris 

 megalocephala, 443 ; in Donacia, 257 ; in 

 Loligo, 358 ; in Sagitta bipunctata, 429, 



430 ; in Tubularia, 58 



Genital coelom, formation of, in Loligo, 364 



Genital dnct, formation of, in Agelena, 230 ; 

 in Astacus, 189 ; in Asterina gibbosa, 481 ; 

 in Paludina, 316 ; in Peripatus capensis, 

 175 : in 8<-<>li>i'ndm, 283 ; of Scorpion, 

 241 



Genital folds, formation of, in Loligo, 364 



Genital operculuin, formation of, inLimulus, 

 238 ; in Scorpion, 241 



Genital organs, development of, in Agelena, 

 230; mAmphioxuslanceolatus, 600-601; in 

 A ntedon rosacea, 558 ; in Astacus, 189; in 

 Asterina gibbosa, 480 ; in Oallidinarusseola, 

 424 ; in Cucumaria glacialis, 540 ; in Dreis- 

 sensia, 337, 346; in Echinus esculentus, 521 ; 

 in Limit! KS, 236 ; in Loligo, 364; in Macro- 

 biotits, 243 ; in Mulgula, 628, 629 ; in 

 Pohulina, 316; in Peripatus capensis, 17 5; 

 in Phyllodromia, 262 - 263 ; in Sagitta 

 bipimctata, 433, 434 ; in Sc<.iloj}etttli-n, 

 283 ; in Scorpion, 240 ; in Synapta riri- 

 para, 539, 540 ; in Tornaria of Nassau, 

 581 ; in blastozooid of Urocliorda, 639 



Genital plates, formation of, in Echinus 

 esculentus, 516 



Genital rachis, formation of, in Aiupltini-n 

 squamata, 501 ; in Asteriim <///'/" ", 481 ; 

 in Echinus esculentus, 520 



Genital ridge, formation of, in Donacia, 256 ; 

 in Phyllodromia, 263 



Genital stolon (see also Dorsal organ), forma- 

 tion of, in Amphiura squamata, 500 ; in 

 Asterina gibbosa, 480; in EcJiinus escu- 

 lentus, 516 



Gephyrea, 163, 401, 416 



Gephyrea nnda, 372 



Gephyrea tubicola, 372. 380 



Germ-layers, definition of, 27 



Germarium of diJIiilhin /-//x.siWj/, 424 



Germinal disc, see Embryonic arm 



Germinal spot, definition of, 3 



Germinal vesicle, definition of, 3 



(Ji-ri/mnn, experiments of eggs of, 96 



Geryonidea, development of, 67 



Gill, development of, in Astacus, 189 ; in 

 343 ; in Loligo, 357 ; in 

 i, 315 ; in Salpa, 636 ; early 

 formation of, in Cephalopoda, 369 ; late 

 formation of, in Gastropoda and Pelecy- 

 poda, 369 



Gill-books, formation of, in Limnlus, 238 



Gill-pouches, formation of, in New England 

 Tornaria, 577 



Gill-slit, first, formation of, in larva of Am- 

 2>hioxus, 596 



Gill -slits, formation of, in larva of simple 

 Ascidiau, 620 ; in embryo of l'i//'<>x<nii</, 

 634 



Glabellum in Trilobite larva of Limulus, 238 



Glacial acetic acid, use of, 33 



Glandular cells of larva of Galerucella tdmi, 

 metamorphosis of, 268 



Glandular pockets of mid-gut in lionacia, 

 255 



Glandular tube of larva of Achtheres amb/n- 

 plitis, 207 



Glass body of ocelli of Dytiscu*, 274 



Glass-crab, 214 



Glochidium, 655 ; larva of Unionidae, 350 



Glockenkern of Medusa of Tubidaria, 58 



Ulossiphonia, 161 



Guathites, formation of, in ancestors of 

 Arthropoda, 244 



Gnathobdellidae, 128, 160, 163, 184 



Gonangium, definition of. 63 



Gonidial groove of Actiuozoa, definition of, 

 83 



Gonocoele, definition of, 166 ; formation of, 

 in Amphioxus lanceolatus, 587, 601 



Gonophores of Clam, 62 ; nf Cordylophora, 

 62; of HaleciuiD, 62; of Sertularia, 62; 

 of Ti'buliirii.i, 54 



(,'<i/-i/<i/-i<i, 86 



Grantia, 43, 44, 46, 47, 51, 52 ; develop- 

 ment of, 37-43 



('i-nn/tii cmiipressa, 37 



Grub of Donacia, 260 ; of Doryphora, 261 



Gut, development of, in Amphioxus lanceo- 

 /nf us, 595; in Antrdmi rosacea, 547; in 

 larva of Aftertax, 461 ; in Cerebratuius 

 In, -ti'ii.-;, 120; in <'i-H>,Yll<i oculata, 481; 

 in Snitiff" I'i/inni-hiln, 4:il ; in Sola 

 endeca, 482 : in ]',,> i'/-nfi'/ in" septentrion- 

 alis, iui' 



Gyminilila^tca, 53 



Gyninolaemata, 386 



Haematoxylin (Givnaclu-r'.s), advania-t-s of, 



35 

 Haemocoele of Peripatus capensis, fnnuation 



of, 172 



