INDEX. 



VOL. VI. 



Abraxas, 116. 

 A canthcchinus, 277. 

 Acanthiidae, 190. 

 Acanthocephali, 448. 

 Acanthocercus, 284. 

 Acanthocinus, 154. 

 Acanthocystis, 560. 

 Acanthodoris, 354, 355. 

 Acanthosoma, 188. 

 ^cari, 241. 

 Acarina, 242. 

 ^ccra, 362. 

 Achseta, 444. 

 Achatina, 348. 

 Achatinellidas, 348. 

 Acherontia, 96. 

 Acineta, 568. 

 Acmsea, 397. 

 Acmasidas, 397. 

 Acridiidaz, 179. 

 Acrocinus, 154. 

 Actsea, 256. 

 Actseon, 361. 

 Actinia, 500, 501. 

 Actinocrinus, 301. 

 Adinometra, 300. 

 Actinomma, 562. 

 Adinophrys, 560. 

 Admete, 372. 

 ^girus, 355. 

 uflolidia, 356, 358. 

 ^Eolidiid&, 358. 

 ^Eptasia, 500. 

 dSquipalpa, 162. 

 ^Eschnidse, 168. 

 ^Ethcria, 410. 

 sfithcriidas, 410. 

 Agalena, 229. 

 Agalenidse, 229. 

 ^4 garist idee, 111. 

 Agate-Snail, 348. 

 Agassizocrinus, 299. 

 Agclecrinus, 295. 

 Agrionidae, 169. 

 Agriotes, 144. 

 Albertia, 446. 

 Alcyonium, 512. 

 Alder-Flies, 163. 

 Alipcs, 207. 

 Allurus, 439. 

 Allolobophora, 439. 

 Alpheidee, 270. 

 Amalthea, 390. 

 Amaurobiidse, 230. 

 Amaurobius, 230. 



Amber-Snails, 348. 

 Amblypygi, 219. 

 Amoeba, 552. 

 Ammonites, 340. 

 Ammonoidea, 340. 

 Amphiora, 308, 

 Amphibola, 352. 

 Amphibolidse, 364. 

 Amphicora, 438. 

 Amphineura, 398. 

 Amphipoda, 277. 

 Amphithoe, 278. 

 Amphitretics, 331. 

 Ampullaria, 389. 

 Ampullariidae, 389. 

 Anatina, 418. 

 Anartiostigma, 205. 

 Anatinacea, 417. 

 Ancilla, 373. 

 Ancistroteuthis, 337. 

 Ancula, 355. 

 Ancylus, 350. 

 Andania, 277. 

 Andrena, 42. 

 Andre?iidaz, 42. 

 Anemonia, 500. 

 Anguillula, 449. 

 Animalcules, 553. 

 Annelida, 432. 

 Anobium, 146. 

 Anodonta, 411. 

 Anomia, 404. 

 Anomiidse, 404. 

 Anomura, 261. 

 Anoplodium, 470. 

 Antedon, 299, 301. 

 AntTier&a, 93. 

 Anthobranchiata, 354. 

 Anthocotyle, 466. 

 Anthomy'mse, 71. 

 Anthonomus, 150. 

 Anthophora, 44. 

 Anthozoa, 495. 

 Anthrax, 60. 

 Anthrenus, 140. 

 Anthribidas, 152. 

 Antiimtharia, 510. 

 Antipathcs, 510. 

 Ant-Lions, 165. 

 Ants, 27. 

 Apatura, 87. 

 Aphaniptera, 75. 

 Aphidse, 196. 

 ^j/m, 196. 

 Aphodius, 142. 



Aphrodite, 433. 

 Aphrophora, 195. 

 Apidse, 45. 

 Apiocrimts, 298. 

 Apion, 149. 

 -4pi's, 45. 



Aplacophora, 399. 

 Aplysia, 363. 

 Aplysiidte, 363. 

 Apoderus, 150. 

 Apodidse-, 285. 

 Aporia, 92. 

 Aporrhaiidae, 385. 

 Aporrhais, 385. 

 ^ws, 285. 

 Arachnida, 204, 213. 

 Arachnocystis, 297. 

 Aradus, 190. 

 Araneae, 220. 

 Araschnia, 86. 

 Arbelidte, 103. 

 ^rca, 405. 

 Arcclla, 553. 

 Architeuthis, 334. 

 Arcidx, 404. 

 ^rrfm, 111. 

 Arctiidse, 111. 

 Arcturidas, 273. 

 Arenia, 436. 

 Arenicola, 435. 

 Argiopidse, 231. 

 Argonauta, 331. 

 Argulus, 283. 

 Argynnis, 84. 

 Argyroneta, 229. 

 Argiironetidae, 229. 

 Arion, 345. 

 Arionidaz, 345. 

 Aristocystis, 296. 

 Ark-Shells, 404. 

 ^4 rmadillidium, 276. 

 Aromia, 153. 

 Army-Worm, 55. 

 Arrow- Worms, 456. 

 Artemia, 286. 

 Arthrolycosa, 221. 

 Arthropoda, 3. 

 Artiostigma, 205. 

 Aryas, 244. 

 A scar is, 452. 

 Ascetta, 546. 

 Asellota, 275. 

 Ascllus, 275. 

 , 59. 

 , 60. 



