INDEX 



939 



Antedon, 291, 311, 311, 312, 314. 



Antelope, 852. 



Antennae of cockroach, 372. 



— of crayfish, 323. 



— of Insects, 385. 



— of Myriopods, 367. 



— of Peripatus, 362. 



— of Trilobites, 430. 

 Antennules of crayfish, 323. 

 Anthomedusae, 202. 

 Anthozoa, 191, 195, 201 205. 

 Anthropoid Apes, 885. 

 Anthropoidea, 882. 

 Anthropoinorph monkeys, 885. 

 Anthropopithecus, 885, 889. 

 AntUocapra, 852. 

 Antipatharia, 195, 198, 205. 



— structure of, 197. 

 Antipathes, 199, 205. 

 Antiquity of man, 894. 

 Antlers, 851. 



Ants, 384, 406. 



Anura, 548, 677. • 



Anurida, 404. 



Anus of Vertebrates, 553, 558. 



Aortic arches of Vertebrates, 562. 



Apes, 885. 



— and man compared, 890. 

 Aphaniptera, 406. 



Aphides, 65, 384, 390, 395, 406. 

 Aphrodite, 209, 268. 

 Apis, 377. 

 Aplysia, 474. 

 Apneustic Insects, 392. 

 Apoda (Echinoderma), 310. 

 Apoda = Gymnophiona, 680. 

 Apodemata (crayfish), 325. 

 Apogonichthys, 209. 

 Appearance of animals in time, 102. 

 Appendages of Arachnoidea, 412. 

 — • of Arenicola, 258. 



— of bee, 377, 378. 

 — - of cockroach, 372. 



— of crab, 338. 



— of crayfish, 323. 



— of Crustacea, 322, 355. 



— of Entomostraca, 340. 



— of Eurypterina, 429. 



— of haddock, 617. 



— of Insects, 385. 



— of Limulus, 427. 



— of Myriopods, 367. 



— of Norway lobster, 324.. 



— of Peripatus, 362. 



— of Polychaeta, 266. 



— of scorpion, 414. 



— of spider, 417. 



— of Trilobita, 430. 



Appendicular skeleton of Vertebrates, 



537- 

 Appendicularia, 511, 512, 513. 

 Appendix vermiformis, 802. 

 Aptera, 384. 

 Apterygota, 384, 407. 

 Apteryx, 770, 771. 

 Aptomis, 774. 



Apus, 319, 339, 339, 340. 

 Aquatic Mammals, 829. 

 Aqueduct of Sylvius, 542. 

 Aqueductus vestibuli, 548. 

 Aqueous humour of eye, 552. 

 Arachnactis, 195. 

 Arachnoid membrane, 543. 

 Arachnoidea, 412. 

 Arachnomorpha, 422. 

 Araneidce, 417. 

 Arbacia, 305. 

 Area, 480. 

 Arcella 131, 141. 

 Archseoceti, 833. 

 Archaeopteryx, 4, 768, 769. 

 Archaeornithes, 768. 

 Archenteron, 81, 527, 553. 

 Archerina, 137. 

 Archi-Annelida, 244, 270. 



Chastopoda, 270. 



Archicoele, 233. 



Archigetes, 223, 228, 229. 



Archipterygium of Fishes, 631. 



Archoplasmic threads, 54, 56. 



Arcicentrous vertebral column, 592. 



Arcifera, 677. 



Arciferal, 657. 



Arctocyon, 873. 



Arctoidea, 870, 87T, 872. 



Arctomys, 867. 



Arctopithecini, 885. 



Arcualia, 591. 



Area opaca, 717, 765. 



— pellucida, 717, 765. 

 Arenicola, 257, 257, 266. 



— cross-section of, 261. 



— nerv'ous system of, 259. 

 Argas, 424. 



Argonauta, 464, 483, 486. 

 Argulus, 343, 360. 

 Argyroneta, 417, 422. 

 Arion, 474. 



Aristotle's lantern, 303. 



Arius, 628. 



Armadillos, 843, 844. 



Arrested development, 46. 



Arrow-worms, 280. 



Artemia, 339. 



Arterial arches of Vertebrates, 562. 



— system. See Vascular system. 

 Arterial system of embryo of higher 



Vertebrates, 562. 

 Arthroblranchs of crayfish, 331. 

 Arthropoda, classes of, 9. 

 — • general characters of, 319. 

 Artiodactyla, 847, 848. 



— and Perissodactyla contrasted, 847. 

 Arvicola, 867. 



Asaphus, 429. 

 Ascaridae, 241. 

 Ascaris, 236, 241, 242. 



— fertilised ovum of, 55. 



— fertilisation in, 75. 



— section of, 237- 

 Ascetta, 154, 153. 



Ascidia, 499, 500, 501, 504, 514. 



