INDEX AND GLOSSARY 



363 



Mourning cloak, 70. 

 Mouth parts of insect, 32. 



of mosquito, 46. 

 Mud eel, 204. 

 Mud fish, 196. 

 Mud puppy, 203. 

 Mud wasps, 55. 

 Mur'idae, 270. 

 Mus, 271. 

 Museum pest, 114. 

 Muscles, 283-285. 

 Mussel, 143, 144. 

 Muskrat, 270. 

 Mya, 142. 



Myri&p'oda (Gr. myroi, ten 

 thousand, and poda, feet), 26, 

 132. 



Mysis, 299. 

 Mytilaspis, 102. 



Nares, 210. 

 Natural History, 11. 



selection, 322, 347-350. 

 Nau'plius, one of the larval forms 

 of crustaceans, 299, 300, 333. 

 Nautilus, 150. 

 Necturus, 203. 



Nem' a thel mm' thes (Gr. nema, 

 thread, and helminth, worm), 

 25, 155-157. 

 Ngrn'atocyst, 168. 

 Nemertini, 161. 

 Nephrid'ia, organs of excretion 



in the lower animals, 154. 

 Nerves, termination of, 305, 308. 

 Nervous system of bee, 121. 



of cat, 289. 



of crayfish, 134. 



of fish, 197, 198. 



of frog, 209, 211. 

 NeurSp'tera, 26, 116. 

 Newt, 199, 200 

 Night walker, 152. 

 Noctuidse, 82. 



Nomenclature, 28. 



Notochord, 186, 187. 



Nuthatches, 241, 245. 



Nut weevil, 107. 



Nymph, the young form of insects 

 which do not have a complete 

 metamorphosis, 31, 36, 298. 



Oak galls, 60, 67. 



Oak-leaf rollers, 87. 



Ocelli, simple eyes of insects, 34. 



Odonata, 26, 118. 



Opalina, 327. 



Operculum, 189. 



Ophidia, 213, 221. 



Ophion, 66. 



Ophisau'rus, 212. 



Ophiuroi'dea, 166. 



Opossum, 263, 264. 



Orang-outang, 282. 



Orchard, birds affecting, 24. 



Order, the several groups of an- 

 imals composing a class or 

 subclass, 26. 



Organism, an individual plant or 

 animal, 11. 



Origin of species, 342-354. 



Orioles, 235. 



Or'nithorhyn'chus, the duck mole, 

 262. 



Orthop'tera (Gr. orthos, straight, 

 and pteron, wing), 26, 30-38. 



Ovip'arous, producing eggs, 213 



Ovipositor (L. ovum, egg, and 

 positum, placed), a projection 

 from the end of the abdomen 

 of insects used in egg-laying, 

 33, 57, 94. 



Owls, 12, 32, 248, 252, 253, 258. 



Owlet moths, 82. 84. 



Ox bot, 24, 49, 330. 



Oyster, 143. 

 crab, 13&. 



Oyster-shell scale, 102. 



