INDEX. 
.30? 
Grub feeding on aphides, 202-204; 
of dragon-fly feeding, 222. 
Gulf of Mexico, sponges of, 35. 
Gulliver cited, 269. 
HAECKEL on eye of star-fish, 88 ; 
finding Protogenes, 16; cited, 
18, 29, 156. 
" Hanging-bell " jelly-fish, 66. 
Harvesting ants, 293. 
Harvest-bug a mite, 199. 
Head of ant, 273. 
Headless mollusca, III. 
Heads, absence of, in lower ani- 
mals, 1 02. 
Helplessness of infant hymenoptera, 
266. 
Hemiptera, term explained, 209. 
Hermit-crab, parasites of, 172 ; 
structure and habits of, 170. 
Hertwig on nerves of medusae, 61. 
Hill-ant, structure of, 271 ; nests 
of, 277. 
Holdsworth, Mr., on birth of ane- 
mones, 69. 
Honey-stealing caterpillars, 250. 
Honey-tubes of aphides, 203. 
Hop harvest destroyed by aphides, 
205. 
Horse, gad-fly hatched inside the, 
263 ; -mussel, pea-crab in the, 
136- 
Huber on slave-making ants, 291, 
292. 
Hunting ants, 297. 
Huxley on rate of increase of plants, 
4 ; on structure of acorn bar- 
nacle, 174. 
Hydra, figure of, 51 ; food of, 52 ; 
lasso-cells of the, 53. 
Hydra form of jelly-fish, 64. 
Hydrophilus or black water-beetle, 
256. 
Hydrozoa, 55. 
Hymenoptera, 263. 
IANTHINA or ocean-snail, 125. 
Ichneumon fly placing eggs, 267. 
India, termites or white ants of, 225. 
Indian Ocean the home of the 
nautilus, 133. 
Infusoria and their origin, 20. 
Ink-bag of octopus, 127. 
Insects, air-tubes of, 213; at the 
head of invertebrates, 1 1 ; com- 
plete metamorphosis of, 233 ; 
paralysed for food, 267 ; propor- 
tion of, among animals, 158 ; 
use of term, 155. 
Insect's eye, section of an, 224. 
"Insects of the sea" or Crustacea, 
156-159. 
Intelligence of ants, 298; of hymen- 
optera, 266. 
Invertebrata, or animals without 
backbones, 300. 
Ireland, feather-stars of, 91. 
Italian markets, sea-urchins in, 98. 
Italy, coral on coasts of, 73. 
JELLY-BELLS, 55, 59, 61. 
Jelly-fish, their rank among ani- 
mals, 10, 54; small weight of 
solid matter in, 62 ; food of, 63 ; 
birth and childhood of the, 65. 
Johnstone, Dr., on sponges, 39. 
Jointed-footed animals, 155. 
King-crabs, 177. 
Kingdoms, animal and vegetable, 
10. 
Knobs, in stalk of ant's body, 271. 
LAC insect, 207. 
Lady-bird, 256. 
Lagena 23. 
Land-snails, breathing of, 120. 
Lankester, Mr. Ray, on insects, 1 56. 
La Rochelle damaged by termites, 
230. 
Lasius niger, 272. 
Lasso-cells of the hydra, 52. 
Lasso -throwers, meaning of term, 
5 1 ; various forms of, 54. 
