INDEX 



Aardvark, 323. 



Abnormalities, lobster, 119; plana- 



rians, 155; starfish, 196. 

 Acanthocottus, 236. 

 Acanthopteri, 252. 

 Acarina, 95. 

 Acartia, 128. 

 Accipiter, 298. 

 Acineta, 225. 

 Acipenser, 247. 

 Acmaea, 170., 

 Acmaeidae, 177. 

 Acrania, 252. 

 Acrididje, 1, 15. 

 Actitis, 306. 

 Adalia, 56. 

 Adeorbidse, 175. 

 Admiral, 21. 

 ^schna, 10. 

 Agalena, 90. 

 Agricultural ant, 37. 

 Alaudidas, 259, 317. 

 Alligator, 279. 

 Allolobophora, 114. 

 Alosa, 243. 



Amblystoma, 257, 335. 

 Amblystomidse, 257, 267. 

 Ameiurus, 240. 

 American crossbill, 284. 

 Amia, 248. 

 Ammonites, 173. . 

 Amoiba, 227, 229. 

 Ampelidae, 291, 317. 

 Ampelis, 291. 

 Amphibia, 254; distribution of, 255; 



metamorphosis of, 260. 

 Amphioxus, 249, 252. 

 Amphipoda, 112. 

 Amphitrite, 149, 150, 159. 



Amphiuma, 198. 



Amphiumidse, 257, 266. 



Amphiura, 198. . 



Anacanthini, 253. 



Anatis, 56. 



Ancestry of vertebrates, 248. 



Angle wings, 21. 



Anguidse, 271. 



Annelida, 136. 



Anodonta, 191 ; embryo of, 180 ; food 

 of, 178 ; habitat of, 178. 



Anolis, 268. 



Anomiidae, 191. 



Anthremis, 48. 



Ant-eater, 322. 



Antelopes, 326. 



Anthophagus, 47. 



Ants, 30, 34, 43; army, 37; colonies 

 of, 35 ; intelligence of, 35 ; language 

 of, 36 ; leaf-cutting, 37 ; social life of, 



Anura, 255, 262, 266. 

 Apes, 230. 



Aphaniptera, 61, 70. 

 Aphids, 14. 

 Aphrodite, 148. 

 Aphroditidae, 159. 

 Apidae, 31, 42. 

 Aplysia, 164. 

 Apteryx, 307, 308. 

 Arachnoidea, 92. 

 Arbacia, 200. 

 Area, 184. 

 Archaeopteryx, 314. 

 Arched crabs, 123. 

 Archiaster, 195. 

 Arcidae, 184. 

 Arctiidae, 24, 41. 

 Araneina, 80, 95. 

 Argiope, 80-83, 86; 

 397 



distribution of, 



