514 



MOLLUSCA— BRACHIOPODA 



Ampditn, 335, 442 



Amphihola, 10, 18, 439 ; breathing, 151 ; 

 radula, 236 



Amphibidimus, 352, 44^ ; radula, 233 



Amphidoxa, 358 



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

 442 ; radula, 233 



Amphineura, 8, 400 ; breathing organs, 

 154, 168 ; nervous system, 203 ; geni- 

 talia, 145 



A iiqj/iipeplea, 439 



Amphiperas, 4^9 



A mphisphyra, 4^0 



A mph issa, 4^3 



Amphitrctus, 383 



AinpuUaria, 17, 416; 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 



AmpnlUna, 4^i 



Ainutisium, 450 



Amyr/a, 4^3 



Anahn/hruH, 4^5 



Anacliis, 4'^3 



Aiiadciius, 24, 44^ 



Anal glands, 241 



Anal siphon, 164, 173 



Anastomopsis, 44'^ 



An a tin a, 274, 275, 459 



Anatiiiacea, 453 ; gills, 167 



Anaulits, 4^4 



Anchistoma, 293, 296 



AnciUa, 267, 4'26 



AncilUnu, 426 



Anrislmrlnnis, 391 



A iiciiitnu/usKt!, 405 



Ancistroteuthis, 391 



Ancula, 434 ; radula, 229, 230 ; warning 

 coloration, 72 



AnculiitK.% 417 



Anci/lvccras, 247, 399 



Anc!/lus, 19, 439 ; breathing, 162 ; hiber- 

 nating, 27 ; radula, 235 



Aneitoi, 325, 44-3 



Angitrcitia, 340, ^i7 



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 



A nodontop)sis, 451 



Anogh/jJta, 325, 441 



Aaomia, 257, 448, 464 : intestine, 241 ; 

 byssus hole, 262 ; hearing, 196 



Anojuiacea, 443 



Anopliijihiird, 451 



Anostn,,,'!, 248, 266, 356, 358, 442 ; aper- 

 ture, 63 



Anthracosia, 451 



An lira, 424 



Anus, 209, 241 



Apera, 334, 44O 



Aperostoma, 344, 414 



Aphanotrochus, 4OS 



Aphelodoris, radula, 230 



Apicaiia, 422 



Aplacophora, 9, 4O4 > radula, 228 



Aplecfa, 354, 439 



Apludruiri, 245, 428, 430 ; radula, 230 



Ap)lys!ii, 245, 428, 431 ; stomach, 239 ; 

 purple fluid, 65 



Aplysioidea, 430 



Aporrhais, 413 ; radula, 215 



Apricardia , 455 



Aptychus, 397 



Aptyxidld, 417 



Aptyxls, 424 



Aral Sea, Livmaea from near, 84 ; Car- 

 diwn from, 91 



Area, 14, 171, 273, 44S ; eyes, 191 



Arcacea, 443 



Arcachon, oyster-parks at, 105 



Arcestes, 397 



Archidur/s, 434, 434 ', protective colora- 

 tion, 73 



Architeuthis, 378, 390, 390 ; sucker, 381 



Arcomya, 458 



Arconaia, 307, 452 



Arctic shells, colour of, 86 



Arcudla, 422 



Argiope, 470, 472, 479, 437 ; parasite of, 

 485 ; distribution, 486 ; fossil, 501, 506, 

 508 



Argiopidae, 506, 508 



Ar<ji)h)icriinim, 420 



Ari)n,uruta, 383, 333; egg-laying, 127; 

 hectocotylised arm, 137 ; radula, 236 



Ariiiia, 413 



Ariolimax, 441, 341 ; radula, 233 



xlrion, 440 ; shell, 175, 245, 246 ; hardier 

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

 laying, 42 f. ; protective coloration, 70 ; 

 pulmonary orifice, 160 ; food, 179: 

 smell, 193 f . ; radula, 233 ; distribution, 

 285 



Arioata, 341, 353, 441 



Ariophanta, 301, 308, 309, 316, 44O ; pro- 

 tective coloration, 70 



Aristotle, on modified arm of polyjius, 138 



Aiic/itif:, 454 



Artkurui,403 



Asaphis, 456 



Ascoceras, 394 



Ascoglossa, 11 n., 431 



Ashford, ('., on pulsations of heart in 

 Hdix, 26 ; on homing of Hdix, 35 ; on 

 dart-sac, 143 



Asolene, 4I6 



Asperglllum, 262, 459 



Aspiddus, 329, 440 



Aspidoceras, 399 



