INDEX. 



ACANTHARCHUS POMOTIS, 443 



Acanthocephali, 123, 133 

 Acanthoglossus Bruijnii, 573 

 Acarina, 339, 366 

 Achorutes nivicola, 344 

 Acineta, 34 

 Acipenser sturio, 427 



development of, 427 

 Acrania, 401, 405 

 Actheres Carpenteri, 278 

 Actinia, 74, 78 

 Actinophrys sol, 27 

 Actinosphserium, 26 

 Actinozoa, 74, 91 

 Adaptation of animals to their 



surroundings, 10 

 Adder, puff, 499 

 ^Egineta, 62 

 ^Eolis pilata, 245 

 .^Epyornis, 538 

 Agalmopsis, 70 

 Agamogenesis, 54 

 Agelacrinus, 190 

 Ai, 579 



Aix sponsa, 543 

 Albatross. 542 

 Albertia, 137 

 Alca impennis, 541 

 Alcyonaria, 85, 91 

 Alectorides, 544 

 Aletia, 359 

 Alewife, 450, 451 

 Alligator Mississippiensis, 514 



Alopecias vulpes, 420 

 Alosa sapidissima, 450 

 Alpheus, 305 

 Alytes obstetricans, 484 

 Amarcecium, 390 

 Ambergris, 593 

 Amblyopsis spelseus, 433 

 Amblyrhynchus, 504 

 Amblystoma mavortium, 479 

 Amia calva, 433 

 Amiurus lynx, 443 

 Ammoccetes, 410 

 Ammonites, 280 

 Amoaba, 3, 17, 22 

 Ampelis cedrorum, 555 

 Amphibia, 464 

 Amphioxus, structure of, 406 



development of, 407 

 Amphipoda, 285 

 Amphisbaena, 502, 503 

 Amphitrite cirrata, 173 



ornata, 



Ampullae of Echinoderms, 179 

 Anabas scandens, 457 

 Anadromous fishes, 451 

 Analogy, 12 

 Anas boschas, 543 



obscura, 543 

 Anchitherium, 602 

 Ancistrodon contortrix, 500 



piscivorus, 500 

 Andrena, 364 

 Andrias Scheuchzeri, 479 



