INDEX OF SUBJECTS 



353 



History: of Chicago region, 13-15; 



geological, 45-48. 

 Hog-nosed snake, 231. 

 Hornet, white-faced, hibernation of, 192. 

 Horntails, 217. 

 Humus in soil, 158. 

 Hydra, 107, 131. 

 Hymenoptera: scientific names: 

 Agapostemon: 



splendenSy 232, 259. 



virididus, 297. 

 Ammophila, 231: . 



nigricans, 285. 



procera, 231. 

 Andrenidae, 224, 255. 

 Andricus seminator, 234, 260. 

 Anomoglossus pusillus, 188. 

 Anoplius: 



divisus, 222, 252. 



marginatus, 255. 

 Apidae, 224. 

 Apis mettifera, 214. 

 Augochlora: 



confusa, 187, 252. 



pura, 239, 256. 



Bembex spinolae, 222, 223, 252. 

 Bombus: 



americanorum, 214. 



separatus, 290, 297. 

 Ceropalidae, 255. 

 Chloralictus cressoni, 277. 

 Cimbex americana, 208, 267. 

 Coeloixys ntfitarsus, 231, 255. 

 Crabro interruptions, 277. 

 Dielis plumipes, 222, 252. 

 Epeolus: 



cressonii, 285. 



pusillus, 231, 253. 

 Eumenes fraternus , 266, 276. 

 Eumenidae, 255. 

 Halictus nelumbonis, 255. 

 Ichneumon: 



extrematatus, 192. 



galenus, 192, 297. 



mendax, 191, 192. 



zebratus, 285. 

 Ichneumonidae, 261. 

 Larridae, 255. 

 Microbembex, 223: 



monodonta, 222, 223, 252. 

 Mutilla ornativentris , 222, 252. 

 Nematinae, 205. 

 Odynerus: 



anormis, 231, 255. 



%m, 276. 



Paniscus gemminatus, 285. 

 Pelopoeus cementarius, 214, 254. 

 Pimpla: 



conquisitor, 214. 



inquisitor, 191. 



Plesia inter rupta, 255. 

 Polistes, 241, 266: 



variatus, 276, 297. 

 -Pier onus ventralis, 667. 

 Scelipron cementarius, 285. 

 Scoliidae, 255. 

 Specodes dichroa, 231, 252. 

 Tachytes texanus, 255. 

 Thalessa atrata, 261. 

 Trogus vulpinus, 261. 

 Tiphia vulgaris, 286, 289, 290. 

 Vespa maculata, 192, 202, 256. 

 Xiphydria maculata, 207. 



Ice-sheet: Wisconsin, 45; advance and 

 retreat, 43-46; drainage from, 45, 

 46. 



Indians, 13. 



Insects: carriers of disease, 21; enemies 

 of, 9, 10; human food, 21. 



Inter-mores physiology, 34, 35. 



Inter-physiology, 34, 35. 



Isle Royale, 195. 



Isopods. See Sowbugs. 



-Lacebugs, 232. 



Lake: Chicago, 45-47; Geneva, 62-63; 

 Michigan, area, 73, bottom communi- 

 ties, 78-81, communities, 73-85, condi- 

 tions, 58-65, light, 63, pressure, 64, 

 temperature, 62, species, 83-85; On- 

 tario, 78; Pine, 67; Turkey, 67. 



Lake communities, 73-85, 124-36; sum- 

 mary concerning, large lake, 81, small 

 lake, 128, 131. 



Lake herring, 77. 



Lakes: circulation in, 60; distinguished 

 from ponds, 124. 



Lampreys, 219. 



Larch or tamarack: sawfly, 195; lappet 

 moth, 195; woolly aphid, 195. 



Lark: bunting, 286, 289; horned, 167, 

 289; meadow, 167, 283, 289; shore, 

 286. 



Larvae: lepidopterous, 167; sawfly, 167. 



Laws: minimum, 68; toleration, 302; 

 limit of range, 304; distribution area, 

 34- 



Lawyer, 82, 85. 



Leaf-beetles, long-horned aquatic, 65, 

 123, 135, 151- 



Leaf-bugs, hibernating, 202. 



Leeches: in Lake Michigan, 77, 80, 83, 

 84; in lakes and ponds, 129; in 

 streams, 101, 103. 



