223 



Hynienopterous larvse, 175. 

 Hvper-metamorphosis of insects, 166. 

 H'yphanti-ia, 204. 

 Hypodermis, 163. 



Ichneumon, 161,201. 



Illinois, fossil insects of, 159. 



Ilythia, 215. 



Injurious insects, 190. 



Insects, ancestry of, 150. 



Insects, archetypes of, 150. 



Insects, beneficial, 190. 



Insect calendar, 187. 



Insects, embryology of, 154, 155. 



Insects, flight of, ix. 



Insects iu the Devonian fonnation, 



158. 

 Insects, metamorphosis of, 166. 

 Insects, origin of, 156. 

 Insects, reason in, 30, 37. 

 Insects, respiration of, 171. 

 Insects, senses of, xiii. 

 Insects, sexes in, 52. 

 Insects, transformations of, xiv, 50. 

 Insects, wingless, 171. 

 Intestinal worms, 161. 

 Isotoma, 140, 143. 

 Itch mite, 125. 

 Ixodes, 117, 123. 



Japyx, 132. 



Jaws of insects, origin of, 174. 



Jelly fishes, 168. 



Joint woiTn. 55. 



Julus, 149, 169. 



Julus, embryology of, 164. 



July, insects of, 206. 



June, insects of, 200. 



Kowaleusky's researches on embry- 

 ology of worms, 169. 



Labium, vi, 165. 



Lachnosterna fusca, 202. 



Lachnus, 220. 



Lady bird, 208. 



Larva, cruciform, 175. Leptiform, 

 175. Two kinds of, 175. 



Larval skin of Crustacea, 166. 



Leaf cutter bee. 26, 206. 



Leaf roller, 188, 197, 205. 



Leeches, 166. 



Legs of insects, 173. 



Leidy, J., on internal parasites of in- 

 sects, 39, 46. 



Lepidocyrtus. 144. 



Lepidopterous larvae, 175. 



Ijepisma, 128. 



Lejjtiform larva, 175. 



Leptns, 120, 155, 159. 



Lespes, on sense of hearing in in- 

 sects, xiv. 



Leucania, 55. 



Leuckart on embryology of Hirudo. 

 168. Parthenogenesis, 168, 



Libellula, 107, 195. 



Linden tree insects, 90. 



Linguatula, 160. 



Lipura. 145. 



Lithobius, 178. 



Locust tree insects, 93. 



Louse, 96, 154. 



Lubbock's discovery of Pauropus, 



149. 

 Lubbock, Sir John, on Thysanura, 



133; on the origin of insects, 159, 



173. 



Machilis, 128. 



Macrodactylus, 206. 



Macrosila cluentius. 184. 



Maggot, origin of, 175, 178. 



Mandible, vi. 



Mandibles of moths. 183. 



Mandibulate insects, 183. 



Mange mite, 125. 



Marey on the flight of insects, ix. 



Mason bee, 192. 



Maxillas, vi. 



Maxilla of moths, 184. 



May beetle, 202. 



May fly, 194. 



May. nisects of, 192. 



Mazonia, 158. 



Meat fly, 82. 



Meek's discovery of fossil insects in 



Illinois. 158. 

 Megachile, 26. 

 Melipona, 18. 

 Melitwa, 193, 207. 

 Melitaja Phaeton, 204. 

 Meloe, 21, 42. 

 Metamorphosis of insects, 166, 175; 



origin of, 179. 

 Miastor, 168. 

 Jlicrogaster. 49. 

 Mites, 116, 149. 

 Mosquito, 68. 

 Mosquito hawk, 195. 

 Mouth-parts of insects, origin of, 173. 

 Mucor, 47. 

 Mud danber, 207. 

 Miiller, Fritz, on ancestry of insects, 



156, 169. 

 Sliiller, J., on sight in iiTsects, xiii. 

 Murray's discovery of Eophytou in 



America, 158. 

 Musca, 80, 168. 

 Muscardine, 47. 

 Mvcetobia, 73. 

 Myobia, 169. 

 Myriopoda, 149. Ancestry of, 159. 



Nannophya, 114. 



Nauplius, 1.55, 160. 



Nebalia, 182. 



Nephelis, 166. 



Nephopteryx, 49. 



Neuropterous larvne, 175. 



New Brunswick, fossil insects of, 1.58. 



Newport, on embryology of Julus, 



1(;4. 

 Nicoletia, 131. 

 Nomada, 38. 

 Notouecta, 209. 

 Nova Scotia, fossil insects of, 159. 



