536 



INDEX 



Aniphistomatidae, 73 



Amphistomum, 71, 73 ; A. hmninis, 63 



Amphitrite, 327, 32S ; gill, 329 



Ampullaria, Teinnocephala with, 53 



Amtchaeta, 350, J76', 395 



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

 vesicles, 358, 436 



Anaiigian worms, 253 



Anarthropora, 529 



Ancylostomum, 143, 163 



Andrews, on Sijninculus, 417, 426 



Aiiyiostomum, 134 



Angler-iish, Trematodes of, 62, 72 



Anguillula aceti, 125, 154 > -A- tritici, 

 125 ; A. diployaster, 155 



Anguillulidae, 137, 154 



Anguiiiella, 532 



Amiadrilvs, 38G 



Annelida, 241 



Anoeeli'8,42 



Anonyniidae, 19 



Anonymus, 16, 18, 19, 20 ; penes, 27 



Anopla, 109 



Anoplocephala, 91; characters, 90: A. 

 mum illana, 90 ; A .perfoliata, life-history, 

 83; specific characters, 90: A. plicala, 

 specific characters, 90 



Anojilodiscns, 73 



Anoplodium, 50 ; A. parasiticum, occur- 

 rence, 45 



Antaeus, 388 



Antedun, as host, 342 



Antenna, of Rotifers, 215 



Anthobothi-ium, 76 n., 91 



Aiithocotyle, 73 



Anthioe, 298 



Antipathes, as host, 298 



A/iuraea, 225, 226 



Anuraeidae, 201, 205, 225, 226 



A'oon, an edible worm, 297 



Apel, on Priapuloidea, 433 



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



Aphaneura, 353, 374 



Aphiiiiostinna, 4^ 



Aphanostomatidae, Jfi 



Aphelenchus, 131, 155, 157 



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

 peristoinium, 263 ; chaetae, 268 ; felt- 

 ing, 312 ; intestine, 271 ; genital cells, 

 273; colour, 291: A. aculea.ta, 312; 

 distribution, 299 ; .-1. echidna, 299 



Aphroditidai',,.'J,<?, 3U9 ; frontal ridge, 260 ; 

 parapodinni, 264; elytra, 266, 309; 

 i-haetae, 266 



Apical plate, of Trochosphere, 245 



Apodina, 235 



Apadoides, 225 



A)>ngi,it, teuiex polymorphic iu, 77 



Apsilidae, 201, 203, 214, 220, 221 



Aiui-Xi's, 213, 214, 221 



Anibellitett, 302 



Arachnid! HIM, 532 



Archiannelida, 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, 1S5 



Aricia, otocyst, 273 ; eggs, 275 



Ariciidae, 258, 321 ; gill, 265 



Aristotle, on Earthworms, 347 



Armata, 445, 446 



Arthropoda, absence of cilia in, 124 



Articulata, ,577, 518 



Ascaridae, 131, 138, 163 



Ascaris, 139, 163 ; A. (tens, 130 : A. (data, 

 140 ; A. depressa, 141 ; A. femx, 141 ; 

 A. incurva, 141 ; A. frptiqitem, 141 ; 

 A. hnnbricoides, 125, 134, 135, 139, 

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

 131, 136, i40, 163; A. mucrtiata, 

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

 nigrmenosa, 155 ; A. nibicxnda, 141 ; 

 A. suillae, 139 ; A. sidcata, 141 ; A. 

 transfmja, 125, 126, 141 



Ascodictyon, 521 n. 



Ascomorpha, S23 



Ascopodaria, 488 n. 



Asdlus, Rotifers attached to, 227 



Asexual reproduction, in Triclads, 40 ; in 

 Rhabdocoels, 44 ; in Cestodes, 80 ; in 

 Tri-choplax and Kalinelfa, 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 ; 

 eomniensalism of, 429 



Asplauchna, 200, 205, 210, 213, 215 u., 

 223, 226 



Asplanchnaceae, 203, 212, 220, 222 



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

 212, 216,2J, 226,230 



As2>lanch,t<2)us, 201, 211, 222, 223, 226, 

 230 



Ass, parasites of, 140 



Association, of Rhabdocoels with Lamelli- 

 branchs and Sea-urchins, 45 ; of Mn- 

 tu* fuscits with littoral animals, 46 ; 

 signittcance, in Turbellaria, 51 see also 

 Commensal and Parasitic 



