INDEX 



References to figures are printed in tliick type (248, 197) ; to systematic position, 



in italics {391, 430) 



ABRALIA, 391 



Absorption of internal portions of 



shell, 259 

 Abyssal Mollusca, 374 

 Acanthinula, 441 

 Acanthoceras, 399 

 Acanthochiton, 403, 403 

 Acanthocloris, 434 

 Acantliopleura, 403 ; eyes, 188 

 Acavus, 303, 304, 335, 441 

 Acera., 245, 430 

 Achatina, 278, 328-337, 333, 44?, 443 ; 



jaw, 211 ; food, 33 ; size of e^g, 124 ; 



A. fulica, 2-9 

 AchatineUa, 278, 326, 327, ^^5; radula, 



234 ; musical sounds, 51 

 Achatinelloides, 332 

 Acicula, 287, 296, 414 

 Acmaea, 405 ; radula, 227 

 Acme, 414 

 AcmeUa, 314, ^i.5 

 Acroptychia, 336, 4^4 

 Acrotreta, 504, -508 

 Actaeon, 250, 427, 428, 4.?9 ; radula, 



217, 230 ; streptoneurous, 203 n. 

 Actaeonella, 430 

 Actaeonia, 433 

 Actaeonina, 250, 4^9 

 Actinnceras, 394 

 Actinodonta, 44'^ 

 Acusta, 30!3, 316, 318, 441 

 Adacna, 12, 297, 455 

 Adalaria, 434 

 Adamsiella, 414 

 Addisonia, 412 

 Adelphoceras, 395 

 Adeorbis, 4I6 

 Admete, 426 

 Aegires, 434 

 Aegista, 305, 310, 44I 

 Aegocera-^, 398 



VOL. Ill 513 



Aeolis, 10, 152, 4S2 ; radula, 217, 

 229 ; stinging cells, 65 ; mimicked 

 by Sagartia, 68 ; warning colora- 

 tion, 72 



Aerope, 328, 333, 440 ; radula, 215 ; 

 habits, 54 



Aestivation, 25 



Aetheria, 328-336, 452; variation, 92 



Africarion, 333, 440 



Agaronia, 426 



Age of snails, 39 



Aglossa, 7 



Agnatha, habits, 51 



Akiodoris, 434 



Alaba, 415 



Alaria, 4I8 



Alariopsis , 420 



Alhersia, 320 



Albino varieties, 87 



Alcadia, 348-351, 410 



Alderia, 432 



Alexia, 439 



Alicia, 459 



AUognathus, 441 



Allopagus, 452 



Alloposidae, 384 



Alvania, 415 



Alycaeus, 266, 302 f., 309, 319, 414 



Amalia, 440 



Amalthea, 78 



Amaltheus, 398 



Amastra, 443 



Amaura, 4II 



Amherleya, 409 



Amhonychia, 449 



Amicula, 404 



Ammonites, 247, 393, 398, 398; sutures, 

 396 ; aptychus, 397 



Aramonoidea, 396 f. 



Amnicola, 325, 415 



Amoria, radula, 222 



2L 



