INDEX. 



Aasfliesre, 576. 



Aaskafer, 590. 



Abdominalia, 446. 



Abiogenesis, 96. 



Abraxas, 583. 



Abyla, 250. 



Acalepha, 250. 



Acalyptera, 576. 



Acanthia, 572. 



Acanthobothrium, 327. 



'Acanthocephala,359,343. 



Acanthometra, 191. 



Acarina, 489. 



Acephalocysts, 336. 



Achaeta, 392. 



Acherontia, 584. 



Achtheres, 436. 



Acidalia, 583. 



Acineta, 205. 



Acmostomum, 312. 



Acoela, 313. 



Acraspeda, 233. 



Acridium, 527, 558. 



AcrocJadia, 295, 296. 



Acronycta, 583. 



Acrophalli, 347. 



Actinaria, 232. 



Actinia, 230, 232. 



Actinometra, 286, 289. 



Actinophrys, 188. 



Actinosphaerium, 188. 



Actinotrocha, 389. 



Actinozoa, 223. 



Aculeata, 595. 



Aculeus, 592. 



Adambulacral plate?, 

 291. 



Adapis, 173. 



Adaptation, 145. 



Adaptions of embryos 

 and larvse, 157. 



Adelo-codonic gono- 

 phore, 236. 



Adenoid connective tis- 

 sue, 38. 



Admiral, 5S5. 



.Ega, 222, 460. 



^Egineta, 242. 



^Eginopsis, 236. 



^Equorea, 238, 242. 



.Eschna, 562. 



.^Eschna rectal, Respira- 

 tion of, 72. 



Agalmidte, 249. 



Agalmopsis, 247, 248,249. 



Agassiz, L, 139. 



Agelena, 504. 



Aglia, 584. 



Agrilus, 589. 



Agrion, 562. 



Agriotes, 589. 



Agrotis, 583. 



Alary muscles, 533. 



Alaurina composita, 313. 



Albertus Magnus, 133. 



Albunea, 478. 



Alcinoe, 266. 



Alciopa, 380. 



Alciopea, 379. 



Alcippe, 446. 



Alcyonaria, 228, 231. 



Alcyonium, 231. 



Aldrovandus, 133. 



Alima, 472. 



Alpheida?, 476. 



Alternation of genera- 

 tions, 123. 



Alucita, 582. 



Alula, 572. 



Alydus, 572. 



Ambulacral brains, 277. 



Ambulacral branching 

 277. 



Ambulacral feet, 273. 



Ambulaeral Gills, 275. 



Ambulacral groove, 291. 



Ambulacral ossicles, 271, 

 290. 



Ambulacral plates, 271. 



Ambulacral surface, 2(i'.i. 



Ambulacral vascular 

 system, 272. 



Ametabola, 547. 



Ammophila, 596. 



Ammothea, 496. 



Amoeba, 186. 



Amcebidium, 209. 



Ampharete, 382. 



Amphibia, Vascular sys- 

 tem of, 65. 



Amphibiotica, 561. 



Amphidiscs, 218. 



Amphihelia, 232. 



Amphileptus, 195, 204. 



Amphinomidae, 374. 



Amphioxus, Vascular 

 system of, 63. 



Amphipeltis, 451. 



Amphipoda, 451. 



Amphipods, Parasites of, 

 362. 



Amphiporus, 342, 340. 



Amphistomum, 317. 



Amphitrocha, 378. 



Amphiura, 278, 279, 

 285, 294. 



Anal, vesicles of Chzeti- 

 fera, 388. 



Analogy, 52. 



Anapera, 575. 



Anatifa, 445. 



Anceus. 469. 



Anchitherinm, 172. 



Anchorella, 436. 



Ancylostomum, 352. 



Andoctonus, 510. 



Andrena, 597. 



Anelasma, 445. 



Auguilla, 351. 



Anguillula, 357. 



Anilocra, 460. 



Animals and plants, 15. 



Anisopoda, 459. 



Annelida, 3C2. 



Anobium, 589. 



Anochanus, 279. 



Anopla, 342, 339, 341. 



Anoplotcrmes, 500. 



