INDEX 



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

 in italics {391, 430) 



A BR ALIA, 391 



Absorjition of internal portions of shell, 



259 

 Abyssal Mollusca, 374 

 Acanthinxda, 441 

 Acanthoceras, 399 

 Acanthochiton, 403, 403 

 Acanthodoris, 434 

 Acant/wpleura, 403 ; eyes, 188 

 Acavus, 303, 304, 335, 441 

 Acera, 245, 430 

 Achatina, 278, 328-337, 333, 442, 443 : 



jaw, 211 ; food, 33 ; size of egtc, 124 ; 



A.fitUm, 279 

 AchcitincUa, 278, 326, 327, 443 ; radula, 



234 ; ninsical sounds, 51 

 ArJuitindhndcs, 332 

 Acicula, 287, 296, 4I4 

 Acmaea, 405; radula, 227 

 Acme, 414 

 Acmella, 314, 415 

 Acrojjtychia, 336, 414 

 Acrotrdn, 504, 508 

 Actaeun, 250, 427, 428, 429 ; radula, 217, 



230 ; streptoneurous, 203 n. 

 Actaconella, 430 

 Actaeonia, 432 

 Actaeonina, 250, 4^^ 

 Actinoceras, 394 

 Actinodoitta, 44^ 

 Acusta, 306, 316, 318, 44I 

 Adacna, 12, 297, 4-^5 

 Adalaria, 4-^4 

 Adamsiella, 4^4 

 Addisonin, 412 

 Adelphoceras, 395 

 Adeorhis, 41(i 

 Admcic, 426 

 A eg ires, 4^4 

 Aegista, 305, 316, 44I 

 Aegoceras, 39S 



VOL. Ill 



Aeolis, 10, 152, 432 ; radula, 217, 

 229 ; stinging cells, 65 ; mimicked 

 by Sagartia, 68 ; warning coloration, 

 72 



Aeroije, 328, 333, 44O ; radula, 215 ; 

 habits, 54 



Aestivation, 25 



Aetheria, 328-336, 452 ; variation, 92 



Africarion, 333, 440 



Agaronia, 420 



Age of snails, 39 



Aglossa, 7 



Agnatha, habits, 51 



Akiodoris, 434 



Alaha, 415 



Alaria, 4I8 



Alariopsis, 420 



Albersia, 320 



Albino varieties, 87 



Alcadia, 348-351, 4IO 



Alderia, 432 



Alexia, 439 



Aliri'i, 459 



Allognathus, 441 



Allopagus, 452 



Alloposidae, 384 



Alvania, 415 



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



Amalia, 440 



Amalthea, 78 



Amaltheus, 39S 



Amastra, 443 



Amaura, 4II 



Amherleya, 409 



Ambonychia, 449 



Amit'uhi, 404 



Aiiimiinites, 247, 393, 398, 398; sutures, 

 396 ; aptychus, 397 



Ammonoidea, 396 f. 



Amnicola, 325, 415 



Amoria, radula, 222 



2 L 



