INDEI. 



Aardvark, 527 



Abdomen, 193 



Abdominal limbs, 209 

 pores, 378 

 „ ribs, 410 



Abomasum, 507 



Abramis brama, 388 



Abysmal famia, 61, 75 



Aoalepba, 109 



Aeanthia lectnlarius, 259 



Aoanthias vulgaris, 383 



Acanthocephala, 163 



Acariua, 284 



Accessory intestine, 137 



Aooipenser, 385 



huso, 385 

 „ mthenus, 385 

 „ sturio, 385 



Acoipitres, 460 



Acephala, 306 



Aoerina cernua, 389 



Acetabulum, 328 



Acbromatin, 5 



Aciculum, 167 



Aooela, 144 , 



Acontia, 112 



Acra^eda, 109 



Acridium, 252 



„ migratorium,252 



Acromion, 477 



Aotiniaria, 118 



Actinosphserium eich- 

 homii, 91 



Adaptation, 66 



Adder, 425 



Adductor muscles, 309 



Adhesive organs, 14 



Adipose tissue, 10 



Adjutant, 459 



^luroidea, 515 



^olidiE, 304 



^olis, 304 



Affinities of animals, 53 



African Elephant, 512 

 „ Ostiioh, 450 



Agonus oataphractus, 390 



Agouti, 531 



Agrion, 255 



Agrotis segetum, 275 



Air sinuses, 475-6 

 „ frontal sinus, 475 

 „ maxillary sinus, 475 



Alaudidas, 464 



Albatross, 457 



Alca alle, 457 

 „ impennis, 457 

 „ tonda,, 457 



Alcedinid^, 465 



Alcedo, 465 



Alcidae, 457 



Aloippe, 206 



Alcyonaria, 113 



Aloyonium digitatum, 114 



Alga, 216 



Alimentary canal, 23 



AHsphenoid, 362 



Allantois, 354 



Alligators, 426 



Alpine Marmot, 529 



Alternation of Genera- 

 tions, 37 



Altiuares, 459 



Altrices, 450 



Alytes obstetricans, 406 



Amblystoma Mexicanum, 

 405 



Ambulacral groove, 129 

 „ plates, 134 



American Black Bear, 516 



Amia, 385, 386 



AmmoccEtes, 382 



Ammodytes, 389 



Ammonites, 323 



Amnion, 353 



Anmiota, 354 



Amoeba, 3-5, 89 



Ampelis garrulus, 462 



AmpMooelous, 360 



Amphiliua, 151 



Amphipnous, 375 



Amphioxus lanceolatus, 

 356 



Amphipoda, 210 



Amphisbaena, 422 



Amphiuma, 404-5 



Ampulla, 124 



Anabas, 375, 389 



Anamnia, 354 



Anal area, 136 

 „ oerci, 236 

 „ cirrus, 169 

 „ glands, 237 



Analogy, 57 



Anarrhicas lupus, 390 



Anas, 458 



Anas acuta, 458 

 boschas, 458 

 clypeata, 458 

 crecca, 458 

 peuelope, 458 

 querquedula, 458 

 sadorna, 458 



Anohitherium, 503 



Anchovy, 387 



Anelasma squalicola, 206 



Anguilla vulgaris, 388 



AnguillidBB, 163 



Anguillula aceti, 163 



Auguis fragilis, 422 



Ankle, 328 



Annelida, 83, 165 



Aunuli, 175 



Anobium, 267 



Anodouta, 315 



Auoplotherium, 506 



Anser cinereua, 458 

 „ ruficollis, 458 

 „ segetum, 458 



Anseres, 458 



Ant-eaters, 526 



Antedon, 130 



Antenna, 184 



Antennary gland, 192 



Anthozoa, 111 



Anthropidae, 533, 535 



Anthropoid Apes, 534 



Anthropomorpha, 534 



Anthus, 462 



