622 INDEX. 
PAGE 
Hessian fly 252 
Heterocercal 435 
Heteroccelous  - 3609 
Heterodont dentition 458 
Hexactinia 135 
Hipparion 522 
Hippopotamus 574 
Hirudinea 239 
Hirudo 19! 
Histology 30 
Holoblastic segmentation 
(total) 49 
Holocephali 439 
Holophytic II 
Holothuroidea 174 
Holozoic II 
Holotricha - 92 
Homarus 204 
Homo 591 
Homocercal : 435 
Homodont dentition 441 
Homology of organs “I 
Homoplastic = - 2 
Honeycomb 514 
Horns 576 
Horse 506 
Humerus 473 
Hyzena 581 
Hydatina 151 
Hydra Ili 
n development of 116 
Hydra-tuba of Aurelia 129 
Hydrocorallinze 135 
Hydroid colonies 117 
Hydromedusze 120 
Hydrozoa 133 
Hymenoptera - 248 
Hyoid arch of Vertebrata 417 
Hyomandibular arch 417 
Hypoblast - 50 
Hypsoprymnus 496 
Hypophysis 425 
Hyracoidea 567 
Hyrax 567 
Hystricomorpha - 564 
ICHTHYOPTERYGIUM OF 
FISHES 435 
Ichthyornis 452 
Ichthyosauria 447 
Iguanodon - 
Tum - 
Incisor 
Infundibulum — - 
Ink-gland of Cephalopoda 
Insecta 
Insectivora 
Interorbital septum 
Intervertebral discs 
Intracellular digestion 
Invagination 
Ischium 
Isopleura 
Iter 
JACKAL 
Jaguar 
Javan Pangolin 
Jellyfish = - 
Jugal - 
Julus - 
KANGAROO - 
Karyokinesis (Mitosis) 
Keber’s organ - 
Keratin —- 
Kidney of Vertebrata - 
King-crab - - 
King of the herrings 
Kiwi - 
Koala 
LABYRINTH OF Ear- 
Lacertilia 
Lachrymal gland 
Lacteal dentition 
Lagomys 
Lamellibranchiata 
Lamprey 
Lamp shells 
Lancelet 
Lateral line system 
Laurer’s duct 
Leech 
Lemuridz 
Lemuroidea 
Leopard 
Lepas 
Lepidoptera 
Lepidosiren 
