308 



INDEX. 



Hyoid bone, 185, 222, 243. 

 Hypostome, 27. 



Ictalurus, 161. 

 Insects, 34-110. 

 collecting, 34. 

 Intestine. See Digestive organs. 



Kidney. See Excretory organs. 



Labial palpi 1 



Labru" ' \SeeMouthparts. 



Lacinia 



Lacteal system, 250. 



Larva, 08, 88, 90, 96. 



Larynx, 222, 243. 



Lasso cells, 28. 



Lateral line, 166. 



Leg bones, of frog, 193. 



of rabbit, 259. 



of sparrow, 235. 



of turtle, 207. 

 Legs, of bird, 217. 



of crawfish, 116. 



of frog, 188. 



of insect, 40. 



of rabbit, 240. 



of turtle, 200. 

 Lens. See Eye. 

 Lepidoptera, 36, 42, 86, 93, 102, 



104, 128. 

 Lepus, 237. 



Life history. See Development. 

 Life process, in amoeba, 15. 



in hydra, 30. 



in insects, 93. 



in mussel, 150. 



in sponge, 25. 



in starfish, 272. 



in vertebrates, 260. 

 Limnea, 154. 

 Lizard, 208. 

 Locomotion, in amceba, 14. 



in crustaceans, 113, 126. 



in earthworm, 132. 



in fish, 162. 



in hydra, 26. 



in insects, 97. 



in mussel, 142. 



in paramecium, 19. 



in snail, 156. 



in sparrow, 214. 



in starfish, 267. 

 Locust, 48. See also Cicada. 



Lucilia, 80. 



Lumbricus, 130. 



Lung. See Respiratory organs. 



Malpighian tube. See Digestive 



organs of insect. 

 Mammalia, 237-259. 

 Mantle, 142, 143, 155. 

 Maxilla. See Mouth parts. 

 Maxilliped, 117. 



Mesentery, 167, 181, 224, 244, 245. 

 Metabolism, 151, 261. 

 Metamorphosis, 69, 96. 

 Metastoma, 118. 

 Mollusca, 140-160. 

 Mouth, of fish, 165. 



of frog, 179, 180. 



of hydra, 28. 



of mussel, 147. 



of rabbit, 241. 



of snail, 156. 



of snake, 209. 



of starfish, 268. 



of turtle, 200. 



of worm, 139. 

 Mouth parts of insects, 39, 44, 49, 



65, 82, 91, 108. 

 Mud dauber, 70. 

 Mud wasp, 70. 

 Mucous membrane, 250. 

 Muscles, of crawfish, 121. 



of fish, 174. 



of frog, 189. 



of insects, 97. 



of mussel, 144. 



of sparrow, 225. 



of starfish, 270, 271. 



of turtle, 203. 



of worm, 136. 

 Mussel, 140. 

 Myenia, 22. 

 Myriapoda, 109, 110. 



Neck, of sparrow, 215, 221. 



of turtle, 200. 

 Nephridium of worm, 136. 

 Nerve collar, of crawfish, 122. 



of insects, 55. 



of worm, 136. 

 Nervous system, of crawfish, 122. 



of fish, 170-173. 



of frog, 185. 



of insect, 55, 98. 



of mussel, 147. 



of rabbit, 250. 



