536 



TNDEX 



Amphistomatidae, 73 



Amphistoruuni, 71, 73 ; A. homines, 63 



A mphitrite, 327, 328 ; gill, 329 



Ampidlaria, Temnocephala with, 53 



Anachaeta, 350, 576, 395 



Anal,. cirri, 259; funnel, 259, 332, 333; 

 vesicles, 358, 436 



Anangiau worms, 253 



Anarthropora, 529 



Ancylostomum, 143, 163 



Andrews, on Sipuncidus, 417, 426 



Angiostomum, 134 



Angler-fish, Trematodes of, 62, 72 



Anguillula aceti, 125, 154 > -4. tritici, 

 125 ; yl. diplogaster, 155 



Anguillulidae, 137, 2& 



Anguinella, 532 



Annadrilus, 386 



Annelida, 241 



Anocelis, 42 



Anonymidae, 29 



Anonymus, 16, 18, 2.9, 20 ; penes, 27 



Anopla, 109 



Anoplocephala, 91; characters, 90: A. 

 iiiaiaillana, 90 ; A .perfoliata, life-history, 

 83 ; specific characters, 90 : A . plicata, 

 specific characters, 90 



Anoplodiscus, 73 



Anoplodium, 50; A. parasitimm, occur- 

 rence, 45 



Antaeus, 388 



Autedon, as host, 342 



Antenna, of Rotifers, 215 



Anthobothrium, 76 n., 91 



Anthocotyle, 73 



Antinoe, 298 



Antipathes, as host, 298 



Awwaea, 225, 226 



Auuraeidae, 201, 205, 225, 226 



A'oon, an edible worm, 297 



Apel, on Priapnloidea, 433 



Aperture, of zooecium, 468, 517, 523, 524 



Aphaneura, 353, 374 



Aphanostoma, 49 



Aphanostomatidae, 49 



Aphelenchus, 131, 155, 157 



Aphrodite, 312 ; shape, 258 ; head, 260 ; 

 peristom ium, 263 ; chaetae, 268 ; felt- 

 ing, 312 ; intestine, 271 ; genital cells, 

 273; colour, 291: A. aculeata, 312; 

 distribution, 299 ; A., echidna, 299 



A^hroditidae, 258, 309 ; frontal ridge, 260 ; 

 parapodium, 264 ; elytra, 266, 309 ; 

 chaetae, 266 



Apical plate; of Trochosphere, 245 



Apodina, 235 



Apodoides, 225 



Apogon, Scolex polymorphus in, 77 



Apsilidae, 201, 203, 214, 220, 221 



Apsilus, 201, 212, 213, 214, 221 



Arabellites, 302 



Arachnidium, 532 



Arcliiannelida, 241 ; anatomy, 243 f. ; 

 nerve cords, 255 ; development, 243, 245 



Archigetes, 5, 74, 76, 91 ; significance of, 77 



Area, of zooecium, 523, 524 



Arenicola, 333 ; perienteric sinus, 252 ; 

 nephridium, 253, 254, 269 ; pro- 

 stomium, 259 ; body, 259 ; head, 264 ; 

 gill, 265 ; chaetae, 266 f. ; genital 

 organs, 273 ; otocyst, 273 ; burrows, 

 285 ; pigment, 291 ; colour, 293 ; A. 

 marina, 333 ; habits, 301 ; in brackish 

 water, 284 ; as bait, 297 ; eggs, 314 



Arenicolidae, 258, 333 ' 



Argilophilus, 372 



Arhynchidae, 185 



Arhynchus hemignathi, 181, 185 



Aricia, otocyst, 273 ; eggs, 275 



Ariciidae, 258, 321 ; gill, 265 



Aristotle, on Earthworms, 347 



Armata, 445, 446 



Arthropoda, absence of cilia in, 124 



Articulata, 517, 518 



Ascaridae, 131, 138, 163 



Ascaris, 139, 163 ; A. acus, 130 ; A. alata, 

 140 ; A. depressa, 141 ; A. ferox, 141 

 A. incurva, 141 ; A. leptoptera, 141 ; 

 A. lumbricoides, 125, 134, 135, 139, 

 163 ; A. megalocephala, 125, 127, 128, 

 131, 136, 140, 163; A. mucronato, 

 141; A. mystax, 125, 130, 140; A. 

 nigrovenosa, 155 ; A. rubicunda, 141 ; 

 A. suillae, 139 ; A. sulcata, 141 ; A. 

 transfuga, 125, 126, 141 



Ascodictyon, 521 n. 



Ascomorpha, 223 



Ascopodaria, 488 n. 



Asellus, Rotifers attached to, 227 



Asexual reproduction, in Triclads, 40 ; in 

 Rhabdocoels, 44 ; in Cestodes, 80 ; in 

 Trichoplax and Salinella, 96 ; in Poly- 

 chaeta, 278 f., 279, 280, 282, 340; in 

 Oligochaeta, 374, 375, 377 ; in Polyzoa, 

 496, 514 



Aspidobothridae, 73 



Aspidocotyle, 73 



Aspidocotylea, 73 



Aspidogaster, 63, 73 



Aspidosiphon, 421, 423, 424, 425, 428 ; 

 commensalism of, 429 



Asplanchna, 200, 205, 210, 213, 215 n., 

 223, 226 



Asplanchnaceae, 203, 212, 220, 222 



Asplanchnidae, 200, 201, 203, 205, 211, 

 212, 216, 223, 226, 230 



Asplanchnopus, 201, 211, 222, 223, 226, 

 230 



Ass, parasites of, 140 



Association, of Rhabdocoels with Lamelli- 

 branchs and Sea-urchins, 45 ; of Mon<>- 

 tus fuscus with littoral animals, 46 ; 

 significance, in Turbellaria, 51 see also 

 Commensal and Parasitic 



