514 



MOLLUSCA — BRACHIOPODA 



Ampelita, 335, 44^ 



Amphibola, 10, 18, 439 ; breathing, 

 151; radula, 230 



AmphibuUmus, 352, 442 ; radula, 233 



Amphidoxa, 358 



Amphidromus, 301, 305, 317, 310, 359, 

 442 ; radula, 233 



Amphineura, 8, 40O ; breathing organs, 

 154, 168 ; nervous system, 203 ; geni- 

 talia, 145 



Amphipeplea, 439 



Amphiperas^ 419 



Amphisphi/ra, 430 



Amp/ussa, 4^3 



Amphitretus^ 383 



Ampullar i< I, 17, 4I6 ; self-burial, 42 ; 

 spawn, 125 ; breathing organs, 151, 

 158 ; jaws, 212; shell, 249, 263 ; oper- 

 culum, 268 ; distribution, 294, 320, 

 322, 343, 359 



Ampullarina^ 302, 439 



Ampulli7ia, 41I 



Amussiiim, 4^0 



Ami/cla, 423 



Anabathron, 415 



Anachis, 4^3 



Anademis, 24, 441 



Anal glands, 241 



Anal siphon, 164, 173 



Anastomopsis, 442 



Anatina, 274, 275, 459 



Anatinacea, 458 ; gills, 167 



Anaiilus, 414 



Anchistoma, 293, 296 



AncUla, 267, 426 



AncilUna^ 426 



Aiicistrochirus, 391 



Ancistrome.sns, 405 



Ancistroteuthis^ 391 



Ariciila, 434 ; radula, 229, 230 ; warn- 

 ing coloration, 72 



Anculotus, 417 



Ancijloceras, 247, 399 



AncAjhis, 19, 439 ; breathing, 162 ; 

 hibernating, 27 ; radula, 235 



Aneitea, 325, 443 



Angitrema^ 340, 41'^ 



Anisocardia, 451 



Anodonta, 259, 341, 452 ; shower of, 47; 

 variation, 92 ; Glochidium, 147 ; gill, 

 167 ; otocyst, 197 ; nervous system, 

 206 ; hinge, 274 ; A anatina, 24 ; dis- 

 tribution, 282 



Anodontopsis, 45 1 



Anogli/pta. 325, 44I 



Anomia, 257, 448. 464 ; intestine, 241 ; 

 byssus hole, 262; hearing, 196 



Anomiacea, 448 



Anoplophora, 451 



Anostoma, 248, 266, 356, 358, 442; 

 aperture, 63 



Anthracosia, 451 



Anura, 4^4 



Anus, 209, 241 



Apera, 334, 440 



Aperostoma, 344, 414 



Aphanotrochus, 4O8 



Aphelodoris, radula, 230 



Apicalia, 422 



Aplacophora, 9, 404 ; radula. 228 



Aplecta, 354, 439 



Aplustrwn, 245, 428, 430 ; radula, 230 



Aplysia, 245, 428, 431 ; stomach, 239 ; 

 purple fluid, 65 



Aplysioidea, 430 



Apoirhais, 4I8 ; radula, 215 



Apricardia, 455 



Aptychus, 397 



Aptyxiella, 41'^ 



Aptyxis, 424 



Aral Sea, Limnaea from near, 84 ; 

 Cardium from, 91 



Area, 14, 171, 273, 448; eyes, 191 



Arcacea, 448 



Arcachon, oyster-parks at, 105 



Arcestes, 397 



Archidoris, 434, 434 ', protective colora- 

 tion, 73 



Architpnthis, 378, 390, 390 ; sucker, 381 



Arcumya, 458 



Arconaia, 307, 452 



Arctic shells, colour of, 86 



Arciiella, 422 



Argiope^ 470, 472, 479, 487 ; parasite 

 of, 485 ; distribution, 486 ; fossil, 

 501, 506, 508 



Argiopidae, 506, 508 



Argobuccinvm, 4^0 



Argonanta, 383, 383 \ egg-laying, 127; 

 hectocotylised arm, 137; radula, 236 



Arinia, 4^3 



Ariolimax, 44I, 34 1-, radula, 233 



Arion, 440 ; shell, 1 75, 245, 246 ; hardier 

 than Helix, 24 ; voracity, 30 f.; egg- 

 laying, 42 f.; protective coloration, 

 70 ; pulmonary orifice, 160 ; food, 

 179 ; smell, 193 f. ; radula, 233 ; dis- 

 tribution, 285 



Arionta, 341, 353, 44I 



Ariophanta, 3 jI, 308, 309, 316, 440; 

 protective coloration, 70 



Aristotle, on modified arm of polypus, 

 138 



Artemis, 454 



Arthur ia, 403 



Asaphis, 456 



Ascoceras, 394 



Ascoglossa, 11 n., 4ol 



Ashford, C, on pulsations of heart in 

 Helix, 26 ; on homing of Helix, 35 ; 

 on dart-sac, 143 



Asolene, 4I6 



Aspergillum, 262, 459 



Aspidelus, 329, 440 



