344. 



jyoEX. 



Craspedon, 162. 

 Craspedote medusae, 162. 

 Cray-tishes, 191. 

 Cricket, 201. 

 Crinoidea, 168, 170. 

 Crocodile, 270. 

 Ctenoid scales, 257. 

 Ctenophora, 142, 168. 

 Cup-coral, 156, 157. 

 Cuttle-fish, 43, 109, 228, 280. 

 Cuttle-fishes, 210. 

 Cuvier, 117,289, 293. 

 Cycloid scales, 267. 

 Cyclpstomi, 250. 



Darwin, 49, 62, 323. 

 Day-flies, 203. 

 Dead-man's fingers, 155. 

 Death-watch, 207. 

 Decapoda, 191. 

 Dendrocoels, 180. 

 Dental formula, 287. 

 .Dentine, 284. 

 Dentirostres, 276. 

 Dentition, insectivorous, 295. 

 Dermal bones, 261. 

 Dermis, 43. 

 Devil-fish, 228. 

 Dibranchiata, 228. 

 Didelphia, 282. . 

 Digits. 85, 243. 

 Differentiation, xiv, 26, 61,62. 

 Diphj'odont, 285. 

 Diploblastic, 29, 46, 112, 130, 



.142. 

 Dipnoi, 259.' 

 Diptera, 204. 

 Discophora, 184. 

 Distal, xiv, 84. 

 Diverticulum, xiv. 

 Division of labbur, 24. 

 Dogs, 51,. 52, 291. 

 Dog-fishes, 262,.253., 



Dorsal, 81. 

 Dragon-fly, 39, 200. 

 Dromedary, 295. 

 Duck, 57, 76. 



Ear, 32. 



Earthworm, 46, 132, 183. 



Earwig, 201. 



Echinodermata, 118, 168. 



Echinoidea, 168, 174-177. 



Ectocyst, 231. 



Ectoderm, xiv, 46, 71, 73, 111, 



144. 

 Ectoplasm. 22, 135. 136. 

 Edentata, 283. 

 Efierent nerves, 34. 

 Egg, XV, 75. 

 Egg-cell, 67, 69. 

 Elasmobranchs, 252. 

 Electric currents of the 



animal body, 104. 

 Electric fishes, 103, 262, 263. 

 Electricity, 102. 

 Elephant, 296. 

 Embryo, 74. 

 Embryology, 54, 59, 65. 

 Emu. 274. 

 Enamel, 284. 

 Encystment, 66, 136, 137. 

 Endoderm, xv, 46, 71, 73, 111, 



144. 

 Endoplasm, 22, 135. 

 Endoplast, xv. 128, 129. 

 Endoskeleton, 242. 

 Enterocoele, 41. 

 Enteron, xv, 40, 46, 142, 143, 



159. 

 Enteropneusta, 237. 

 Entomology, 198. 

 Entomostraca, 186. 

 Environment, C>iS, 114. 

 Epiblast, XV, 30, 46, 72, 112, 

 113. 



