54 6 



INDEX 



round worms, 149 ; of birds, 459 ; 



of reptiles, 435 ; of scorpion, 255. 

 Aorta, of mammals, 512 ; of molluscs, 



275; of vertebrates, 350. 

 Ape, 544. 

 Aphides, 250. 

 Apiosoma bigeminum, 58. 

 Apis mellifica, 253; parthenogenesis 



in, 250. 



Aplacophora, 284. 

 Aplysia, 288, 291. 

 Apopyle, 82. 

 Appendicularia, 322. 

 Appendix vermiformis, 507. 

 Apteria, 462, 483. 

 Apteryx, 483. 

 Apus glacialis, 232, 275. 

 Arachnida, 254; lungs or pulmonary 



sacs, 257. 



Arachnidium, 259. 

 Arbor vitas of cerebellum, 517. 

 Arcella vulgaris, 20. 

 Arch, haemal, 335, 369; hyoid, 337, 



372; pectoral, 339, 373, 406, 445, 



446, 500; neural, 410; pelvic, 339, 



416, 445, 470, 502. 



Arches, branchial, 337, 372,407; vis- 

 ceral, 337, 370, 444. 

 Archidoris tuberculata, 290. 

 Archipterygium, 406. 

 Architeuthis, 308. 

 Argonauta argo, 302, 303. 

 Arteries, of vertebrates, 349, 379,419, 



422; coronary, 510; pulmonary, 



352, 407; systemic, 351. 

 Arthropoda, 212. 

 Armadillo, 526, 533. 

 Artiodactyla, 537. 

 Aristotle's lantern, 171. 

 Ascaris lumbricoides, 149, 151 ; suilla, 



149. 



Ascetta primordialis, 84. 

 Ascidia callosa, 314; mammillata, 



320. 

 Ascidians, 314; blood system, 318; 



heart, 318; larva of, 319; nervous 



system, 318. 



I Aspredo, 404. 

 Astacus fluviatilis, 213, 221. 

 Asterias rubens, 157 ; vulgaris, 157. 

 Asteroidea, 157. 

 Astraea, 121 ; pallida, 123. 

 Astragalus, 504. 

 Asymmetron, 323. 

 Atlas, 493 ; of birds, 464. 

 Atriopore, 326. 

 Atrium, 326. 

 Auditory capsules, 410. 

 Aurelia aurita, 108, in. 

 Auricles, of birds, 477 ; of mammals, 



510 ; of rabbit, 333 ; of sharks, 377 ; 



of vertebrates, 350, 407. 

 Aves, 456. 

 Avicularium, 181. 

 Axis, 493 ; of birds, 464. 



Babesia bovis, 58. 



Baboon, 543. 



Balanoglossus, 311, 313. 



Bandicoot, 525, 528. 



Barbs, of feathers, 461. 



Barbules, 461. 



Basi-sphenoid, 498. 



Bat, 526, 542. 



Bdellostoma, 360, 361, 364. 



Beak, of birds, 457 ; of bivalve shells, 

 267; of Brachiopod shells, 184; of 

 czar fish, 396; of sword fish, 396. 



Bear, 526. 



Beaver, 526, 541. 



Bee, 250 ; honey, 253 ; parasites, 252. 



Beetle, carpet, 245. 



Belemnites, 301. 



Bells, swimming, 105. 



Beroe, 128. 



Bile, 346. 



Bill, of birds, 485; modifications of, 



485- 



Binomial nomenclature, 2. 



Biology, definition of, I. 



Bionomics, 13. 



Birds, 456 ; colors of, 484 ; egg, 483, 

 489, 490 ; limbs of, 459 ; mouth of, 

 459; voice of, 488; wings of, 459. 



