788 



INDEX. 



175 



Argyroneta, . 

 Arion, . 



Aristotle's lantern, 

 Arius, . 



Armadillo (Crustacean), 

 Armadillos, . 

 Arrow-worms, 

 Artemia, 

 Arterial arches of Vertebrates, 

 system. See Vascular 

 system. 

 ,, ,, of embryo of 



higher Vertebrates, . 

 Arthrobranchs of crayfish, 

 Arthropoda, classes of, . 



„ general charac 



acters of, . 

 Arthrostraca, 

 Articular, 

 Artiodactyla, 



, , and Perissodac 



tyla contrasted, 

 Ascaridse, 

 Ascaris, 

 Ascetta, 

 Ascidia, 

 Ascidiacea, . 

 Ascon type (of sponge), 

 Asellus, 



Asexual reproduction, 

 Aspredo, 

 Astacus, 

 Asteracanthion, 

 Asterias, 

 Asteroidea, . 

 Astropecten, 

 Astrophyton, 

 Astrorhizida?, 

 Atavisms or reversions, 

 Atax, . 

 Ateles, . 

 AthecEe, 

 Atlanta, 

 Atlas vertebra, 

 Atrial cavity, 

 Atriopore of Amphioxus, 

 Attidse, 

 Atypus, 

 Auchenia, 

 Auditory capsules of skull, 



330 

 373 

 232 

 510 

 271 

 691 

 216 

 264 

 458 



459 



258 



9 



247 

 264, 270 

 434, 6°4 



695 



695 



174 

 176 

 114 



397 

 409 



ii5 

 271 



Si 

 510 

 —264 

 225 

 225 

 225 

 230 

 231 

 106 



82 



33i 

 729 

 566 



373 

 640 



4i7 

 417 

 330 

 33o 

 698 

 43' 



399 



l'AGtf 



Auditory nerve, . . . 444 

 „ organs of Insects, . 304 



Aulostoma, . . . .216 



Aurelia, . .138, 153, 156 

 ,, life history of, . . 141 

 ,, relatives of, . .143 



Auricularia (of Holothuria), 237, 241 



Australian region 

 Autostylic, . 

 Aves {see Birds), 

 Axial skeleton {see 

 Axis vertebra, 

 Axolotl, 

 Aye-Aye, 

 Azygobranchs, 



Babirusa, 



Baboons, 



Backbone, 



Bactrites, 



Baculites, 



Badger, . 



Balsena, . 



Balsenoidea, 



Baleenoptera, 



Balanoglossus 



767 

 535 

 593 



Backbone), 431 

 . 640 

 556, 557 



■ 727 



• 373 



• 697 



■ 73° 



• 43i 



• 3»S 



• 385 

 720 



. 712 

 . 712 

 . 712 



387-394 

 charac- 



Vertebrate 

 ters of, 



Balanus, 



Baleen, . 



Bandicoot, 



Barbary ape, 



Barbule, 



Barnacle, 



Basiliscus, 



Basitemporal 



Batoidei, 



Bats, . 



Bdellostoma, 



Bears, . 



Beaver, . 



Bees, 



Beetles, 



Belemnites, 



Belinurus, 



Beroe, . 



Bilateral symmetry. 



Bile, . 



Bilharzia, 



Bimana, 



• 393 

 264, 269 



. 712 



688 



■ 73° 



• 5°o 

 . 267 



• 576 



• 594 

 516 

 724 



473 

 720 



7H 

 294 

 320 

 385 

 334 

 152 



33 



26, 745 



163 



734 



