546 



INDEX 



/feterakis, 131, 139 



Heterocotylea, 73 



Heterodera, 155, 160, 164 



Heterogamy, 66 n. 



Heteronemertiui, 113 



He^eronereid phase, 276 f. ; chaetae, 246, 

 276 ; parapodia, 276, 277 



Heteronereis, 276, 281 see Heteronereid 



Heteroj)ora, 520 11. 



Heterosyllis, 278, 279, 281 



Hexacotyle, 73 



HeMirthra, 223, 226 



Hibernaculum, 501, 502 



Hincks, on Polyzoa, 475, 500, 508, 516, 

 519, 523 



Hippothoa, 528 



Hippuraria, 533 



Hirudinea, 241, 392 f. ; external charac- 

 ters, 392 ; British species, 393 ; eyes, 



395 : branchiae, 395 ; alimentary canal, 



396 ; vascular system, 396 ; body-cavity, 



397 ; nephridia, 399 ; reproductive 

 organs, 401 ; cocoons, 404 ; classifica- 

 tion, 405 



Hirudiniculture, 393 



Hirudo, 393, 396 f., 399, 403, 405, 407 ; 



nephridium, 400 

 Hislopia, 492 

 Histioderma, 302 

 Histriobdella, 242 n. 

 Histriodrilits, 242 n. 

 Holloway, on Rotifers, 227 

 Holomyarii, 137 

 Holostomatidae, 63, 64, 73 

 Holostomum, 73 ; It. excavatum, 63 

 Holothurian, as host, 298 

 Homalogasler, 73 

 Hood, of Sabellaria, 263, 306 

 Hooks, of Trematodes, 53, 56, 57 ; of 



Cestodes, 75, 85 ; of Cestode - larvae, 



87, 88 ; taxonomic value in Cestodes, 



90 f. 

 Hoplonemertea, 106, 109, 110 ; auditory 



organs, 106, 110 ; British species, 110 ; 



characters, 110 ; development, 113 ; 



proboscis, 110 

 Hornera, 518, 532 

 Horse,' parasites of, 68, 83, 90, 125, 140, 



142, 163 



Horse -leeches, 393 f. 

 Horst, on Oligochaeta, 354 

 Hubrecht on Nemertinea, affinities, 120 ; 



classification, 109 ; excretory system, 



108 ; nervous system, 105 

 Hudson, on Rotifera, 197, 198, 215 n., 



220 n., 223 n., 228 

 Hwtsondla, 224 

 Huxley, on Rotifers, 198, 229 ; on Poly- 



chaeta, 246; on Molluscoidea, 475 

 Jfuxleya, 525, 527 

 Hyulinoecia, 299, 318, 319 ; tentacles, 



262 ; composition of tube of, 290 



Hydatina, 199, 200, 202. 204, 213, 224 



226, 228 



Hydatiuidae, 224 

 Hymenolepis, 91 ; generic characters, 91 ; 



H. diminuta ( = Taenia flavopunctata), 



life-history, 83 ; specific characters, 91 ; 



H. murina ( = Taenia murina), 70; 



life-history, 83, 89, 91 ; H. iwma, 80 : 



life - history, 83 ; specific characters, 



91 



Hyocrinus, as host, 342 

 Hyperiodrilus, 363 f. ; reproductive organs, 



363 



Hypodermic impregnation, 27, 218 

 Hypodermis ( Epidermis) of Gmdius, 



165 ; of Rotifera, etc., 205, 232 

 Hypophorella, 478, 518, 533 ; larva, 510 

 Hyporhynchus, 49 

 Hystrichis, 147, 149, 163 



ICHTHYDIUM, 235 



Ichthyobdellidae, 406 



Ichthyonema, 131, 147, 149, 163 



Ichthyotaenia, 91 



Ichthyotaeninae, 85, 91 



Idmonea, 518, 532 



Iguana, parasites of, 142 



lijima, on yolk-glands, 38 u. 



Illoricata, 223 



llyodrilus, 378 ; chaeta, 350 



Ilyogenia, 388 



Imagine, 19 



Inarticulata, 517, 518 



Incudate, 210, 211 



Incus, in Rotifers, 210 



Inermia, 445 



Infusoriform embryos, 93 



Insects, parasites of, 142, 150, 152, 153, 

 154, 160, 163, 179, 183, 184, 185 



Internal sac, 509, 511 



Internode, 525 



interproglottidal glands, 90 



Intertentacular organ, 469, 473, 508 



Introvert, in Polychaeta, 249, 250 ; in 

 Gephyrea, 412, 424 



Investing membrane, in ectoparasitic Tre- 

 matodes, 57 ; in Cestodes, 85 



loda, form of head, 278 



Isacis, 163 



JAMMES, on skin of Nematoda, 126 



Jaws, of Nereis, 248, 250, 270 ; of Poly- 

 chaeta, 269 f. ; of Eunicidae, 270 ; of 

 Polynoid, 270 ; of Autolytus, 270 ; 

 fossil, 302 ; of Glycera, 270 



Jelly. Miss, on Polyzoa, 523 



Jensenia, 50 



Jimenez, on Leeches, 407 



Joblot, on Rotifers, 197 



Johnston, on Hirudinea, 393 



Joliet, on development of Rotifers, 218 ; on 

 Po]yzoa, 508 



