IXDEX. 



Gasterotrochae, 606. 

 Gastraeadae, 809, 817. 

 Gastral lamella, 248 ; v. Me- 



soglaea. 

 Gastrolith, 184. 

 Gastropoda Azygobranchia, 



dentition, 116. 

 Gastropoda, 469 ; v. Iso- 



pleura, Anisopleura, and 



Helix, Limax. 

 Gastrozooid, 758. 

 Gastrula, xxvi. 

 Gemmation of proscolex, 



232 ; of Flustra, 236. 

 Gemmules, Spongilla, 250, 



04. 



Geotria, 437. 

 Gephyrea, 616-627. 

 Germinal spot, xxiii ; vesicle, 



xxiii. 

 Giant fibres, Lumbricus, etc., 



xvi, 212 ; of Chaetopoda, 



598. 



Gill-rakers, 93. 

 Gizzard, Aves, 48, 53 ; Peri- 

 planet a, 143. 

 Globiferi, 558 n. 

 Globigerina ooze, 893. 

 Globigerinidae, 895. 

 Glochidium, 137 ; byssus of, 



130. 



Glossophora, 456. 

 Gnathobdellidae, 212, 632. 

 Gonidial canals (grooves), 



239. 



Gonoblasts of Salpa, 445. 

 Gonocope, 246. 

 Gonoecium of Polyzoa, 237. 

 Gonotheca, gonophore, etc., 



246. 



Gordiidae, 687. 

 Graafian follicle, 37, 357. 

 Graptolithidae, 769. 

 Green gland, 185, 494. 

 Gregarinida, 857-862, 865. 

 Gromidae, 894. 

 Guard-polyps, 758. 

 Gunda, 666. 

 Gymnamoebae, 905. 

 Gymnoblastea, 247, 776. 

 Gymnococcus, 918. 

 Gymnolaemata, 710. 

 Gymnomyxa, 823. 

 Gymnophiona, 408. 

 Gymnophthalmata, v. Cras- 



pedota. 



Gymnosomata, 469. 

 Gyrodactylus, 650. 



H. 



Haematids, 353. 



Haematin in Pulmonata, 112. 



Haematochrome, 844. 



Haemocyanin, 112, 180, 453, 

 478, 526, 535. 



Haemoglobin, 1 12, i \&\ Lum- 

 bricus, 204 ; Hirudo, 218. 



Halichondrina, 8ll. 



Halicore, 367. 



Haliotidae, 482. 



Haliphysema, reproduction, 

 892 n. 



Halteres of Diptera, 500. 



Haplococcus, 918. 



Harderian gland, 2, 4, 52, 

 68, 262, 346. 



Harpagon, 158. 



Harpe, 158. 



Head, formation of, Taenia, 

 230. 



Head, Insectan, 140. 



Head-kidney of Polygordius, 

 615 ; cf. 582. 



Hebetidentati, 39, 44. 



Hectocotylus, 463, 464. 



Helioporidae, 732 ; skeleton, 

 729. 



Heliozoa, 866-874. 



Helix, shell, 107-109 ; dis- 

 section, 109-123 ; respira- 

 tory and circulatory sys- 

 tems, 109-113; digestive 

 and reproductive systems, 

 113-119; nervous system, 

 119-123 ; egg-shell, 118. 



Hemichordata, v. Entero- 

 pneusta. 



Hemi-elytra, 500. 



Hemi-metabola, 507-8. 



Hemiptera, 510. 



'Hepatic' tissue, Hirudo, 215. 



Hepato-pancreas (=liverj, 

 Helix, 1 1 6, 1 1 8, 132, 134; 

 Astacus, 185. 



Hermaphrodite gland, Helix, 



113, 117- 



Hermaphroditism, xxv. 

 Heterocera, 157. 

 Heterocercal fin, 95, 412. 

 Heterocoela 793, 809. 

 Heterocyemidae, 815, 817. 

 Heterodont, 363. 

 Heterogamy, xxxi, 508. 

 Heteromastigoda, 855. 

 Heteromya, 133, 490. 

 Heteropoda, 482. 

 Heteroptera, 510. 

 Heterotricha, 838. 

 Hexacanth embryo, 228. 

 Hexacoralla, 733. 

 Hexactinellidae, 810. 

 Hexactiniae, 734. 

 Hexapoda = Insecta. 

 Hibernaculum, 108. 

 Hibernating gland, 2, 4, 262. 



Hind-limb, Aves, 62, 66 ; 

 Rana, 81 ; Vertebrata, 342, 

 v. Fins ventral, etc. 



Hinge-teeth, 125. 



Hirudinea, 627-632 ; v. Hi- 

 rudo. 



Hirudo, external characters, 

 212, 213 ; histology, 214, 

 215; digestive system, 216; 

 circulatory system, 217 ; 

 nervous system, 219; re- 

 productive and excretory 

 systems, 221-223 ; plate 

 and description, 318-320. 



Histriobdella- v. Histriodri- 

 lus. 



Histriodrilus, 613-614. 



Holocephali, 430. 



Holochlamyda, 482. 



Holophytic, xx, 820. 



Holopus, 576. . 



Holostei, 431. 



Holothurioidea, 549-554. 



Holotricha, 254, 838. 



Hominidae, 368. 



Homocercal fin, 95, 412. 



Homocoela, 793, 809. 



Homodermidae, 809. 



Homodont, 363. 



Homonomy, 147. 



Homoptera, 510. 



Hooks of Taenia, 229. 



Hoplonemertea, 641. 



Horn wrack, v. Flustra. 



House of Larvacea, 441 ; of 

 Phronima, 539. 



Humerus, v. Fore-limb. 



Hyaleidae, 469. 



Hyalodiscus, 905. 



Hyalospongiae, 810. 



Hydra, figure and descrip- 

 tion, 322, 326-332 ; gene- 

 rative organs, 327 ; histo- 

 logical structure of Hydro- 

 zoa, 328, 332, 766; chlo- 

 rophyl in, 243. 



Hydra tuba, 781. 



Hydranth, 245, = Hydroid. 



Hydatids, 665. 



Hydrocaulus, 245. 



Hydrocephalis, 246. 



Hydrocope, 246. 



Hydrocorallina, 246, 776. 



Hydrocyst, 770. 



Hydroid, 745. 



Hydroidea, 755-769, 776 ; 

 figures and description, 

 326-332. 



Hydromedusae, v. Craspe- 

 dota. 



Hydromedusan type, 745 ; 

 modifications of, 745, 757. 



Hydrophyllia, 771. 



