INDEX. 



ACANTHARCHUS POMOTIS, 443 

 Acanthocephali, 165, 175 

 Acantlioglossus Bruijnii, 573 

 Acarina, 359, 386 

 Acliorutes nivicola, 364 

 Acineta, 34 

 Acipenser sturio, 427 



development of, 437 

 Acrania, 401, 405 

 Actheres Carpenter!, 298 

 Actinia, 74, 78 

 Actinophrys sol, 27 

 Actinosphserium, 26 

 Actinozoa, 74, 91 

 Adaptation of animals to their sur- 

 roundings, 10 

 Adder, puff, 499 

 JEgineta, 62 

 ^Bolis pilata, 265 

 ^ZEpyornis, 538 

 Agahnopsis, 70 

 Agamogenesis, 54 

 Agelacrinus, 108 

 Ai, 579 



Aix sponsa, 543 

 Albatross, 542 

 Albertia, 179 

 Alca impennis, 541 

 Alcyonaria, 85, 91 

 Alectorides, 544 

 Aletia, 379 

 Alewife, 450, 451 

 Alligator Mississippiensis, 514 

 Alopecias vulpes, 420 

 Alosa sapid issima, 450 

 Alpheus, 315 



Alytes obstetricans, 484 

 Amarcecium, 200 

 Ambergris, 593 

 Amblyopsis spelseus, 453 

 Amblyrhynclius, 504 

 Amblystoma mavortium, 479 

 Amia calva, 433 

 Amiurus lynx, 443 

 Ammocoetes, 410 

 Ammonites, 280 

 Amoeba, 3, 17, 22 

 Ampelis cedrorum, 555 

 Amphibia, 464 

 Amphioxus, structure of, 406 



development of, 407 

 Amphipoda, 305 

 Amphisbaena, 502, 503 

 Amphitrite cirrata, 236 



ornata, 239 



Ampullae of Echinoderms, 97 

 Anabas scandens, 457 

 Anadromous fishes, 451 

 Analogy, 12 

 Anas boschas, 543 



obscura, 543 

 Anchitherium, 602 

 Ancistrodon contortrix, 500 



piscivorus, 500 

 Andrena, 384 

 Andrias Scheuchzeri, 479 

 Anemone, sea, 74 

 Angle, facial, 626 

 Angler, 442, 460 

 Anguilla acutirostris, 446 

 Anguillula aceti, 170 



tritici, 170 



