INDEX. 



Aasfliege, 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. 



Achseta, 392. 



Acherontia, 584. 



'Achtheres, 436. 



Acidalia, 583. 



Acineta, 205. 



Acmostomum, 312. 



Accela, 313. 



Acraspeda, 233. 



Acridium, 527, 558. 



AcrocJadia, 295, 296. 



Acronycta, 583. 



Acrophalli, 347. 



Actinaria, 232. 



Actinia, 230, 232. 



Actinometra, 286, 289. 



Actinophrys, 188. 



Actinosphgerium, 188. 



Actinotrocha, 389. 



Actinozoa, 223. 



Aculeatn, 595. 



Aculeus, 592. 



Adambulacral plates, 

 291. 



Adapis, 173. 



Adaptation, 145. 



Adaptions of embryos 

 and larva?, 157. 



Adelo-codonic gono- 

 phore, 236. 



Adenoid connective tis- 

 sue, 38. 



Admiral, 5S5. 



222, 460. 



yEgineta, 242. 



^Eginopsis, 236. 



uEquorea, 238, 242. 



^Eschna, 562. 



^Eschna rectal, Respira- 

 tion of, 72. 



Agalmidse, 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. 



Alpheidae, 476. 



Alternation of genera- 

 tions, 123. 



Alucita, 582. 



Alula, 572. 



Alydus, 572. 



Ambulacral brains, 277. 



Ambula'cral branchiae, 

 277. 



Ambulacral feet, 273. 



Ambulacral Gills, 275. 



Ambulacral groove, 291. 



Ambulacral ossicles, 271, 

 290. 



Ambulacral plates, 271. 



Ambulacral surface, 261). 



Ambulacral vascular 

 sybtem, 272. 



Ametabola, 547. 



Ammophila, 596. 



Ammothea, 496. 



Amceba, 186. 



Amcebidium, 209. 



Ampharete, 382. 



Amphibia, Vascular sys- 

 tem of, 65. 



Amphibiotica, 561. 



Amphidiscs, 218. 



Amphihelia, 232. 



Amphileptus, 195, 204. 



Amphinomidse, 374. 



Amphioxus, Vascular 

 system of, 63. 



Amphipeltis, 451. 



Amphipoda, 451. 



Amphipods, Parasites of, 

 362. 



Amphiporus, 342, 340. 



Amphistomum, 317. 



Amphitrocha, 878. 



Amphiura, 278, 279, 

 285, 294. 



Anal, vesicles of Chseti- 

 fera, 388. 



Analogy, 52. 



Anapera, 575. 



Anatifa, 445. 



Anceus. 459. 



Anchitherium, 172. 



Anchorella, 436. 



Ancylostomum, 352. 



Andoctonus, 510. 



Andrena, 597. 



Anelasma, 445. 



Anguilla, 351. 



Anguillula, 357. 



Anilocra, 460. 



Animals and plants, 15. 



Anisopoda, 459. 



Annelida, 362. 



Anobium, 589. 



Anochanu?, 279. 



Anopla, 342, 339, 341. 



Anoplotermes, 560. 



