﻿641 



Index to Phylogeny of an Acquired Characteristic. 



Abiogenesis, 390 

 Acanthoceras Remondi, 



565 

 Acceleration, law of, 373, 



374 

 Acleistoceras, 585 

 Acme, 393, 397 

 Acquired characters, 407 

 Actinoceras, 403, 404 

 Adelphoceras, 519 



secundum, 493, 519 

 bohemicum, 519 

 ^Egoceras, 446 

 Agassiz, Alex., 370 



Louis, 353, 390, 402 

 Agoniatites fecundus, 362, 



609 

 Aipoceras, 545 

 Anagerontic, 391 

 Anaplasis, 391, 393, 397, 



398 

 Ananeanic, 391, 406, 407, 



408 

 Ananepionic, 391, 405, 

 411, 412, 414, 418, 436, 

 468, 583 

 Anarcestes, 414 

 Ancistroceras, 509 

 Bolli, 510 



undula.tum, 510, 511 

 Dyeri, 511 

 Ancyloceras calloviense, 

 372, 614 

 Jennyi, 573, 577 

 lineatus, 577 

 PliOC. AMEE. PHILOS. 



Ancyloceras percostatum, 



569 

 tricostatus, 574 

 uncum, 577 

 Anephebic, 391 

 Angelinoceras, 457, 458, 

 508 

 anguinum, 508 

 latum, 508, 512 

 Annular lobe, 361, 408, 



429 

 Annular cone, 429 

 Annular muscle, 429 

 Ammonitinse, 355, 371, 



372,415, 416 

 Ammonites bifurcatum, 



566 

 Ammonoceratites Con- 



radi, 569 

 Ammonoidea, 352, 358, 

 359- 3 6 i. 3 68 , 370. 37i. 

 373- 374- 376, 378, 38S. 

 410, 413, 416, 417, 418, 



43i 

 Anomaloceras, 494 



anomalum, 494, 599, 

 607 

 Apertures, 353 

 Apheleceras, 528, 539 



mutabile, 539, 602 

 Aphetoceras, 433, 447, 593, 



594 

 americanum, 447, 593 

 attenuatum, 440 

 boreale, 448, 592 



soc. xxxii. 143. 4 c. i'ki 



Aphetoceras Farnsworthi, 



448 

 Apsidoceratidae, 535 

 Argonauta, 356, 357, 358 

 Arietidas, 367, 371, 374 

 Artemia, 389 

 Ascoceras, 513 

 Asiphonula, 403 

 Asymptoceras, 528, 545 

 Aturia, 563 



Morrissi, 564 



Zizac, 564 

 Aulacoceras, 355, 356 

 Autotemnon, 399 

 Auxology, 380, 381, 390 

 Avolution, 394 



Bactrites, 361, 362, 368, 



412, 413, 590, 609 

 Baculites, 372, 373, 377, 

 395, 411, 417, 477, 

 566, 579, 612 

 baculoides, 578 

 Barrande, 356, 359, 365, 

 366, 369, 371, 372, 413, 



513 

 Barrandeoceras, 351, 379; 

 408, 409, 433, 150. 

 454, 600 

 bohemicum, 600 

 convolvans, 451, 601 

 Minganense, 451 

 natator, 452 

 Sacheri, 1.53 



NTBD AUGUST 20, L894. 



