INDEX OF SUBJECTS 
History: of Chicago 
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: 
—A gapostemon: 
splendens, 232, 259. 
viridulus, 297. 
—Ammophila, 231: 
nigricans, 285. 
procera, 231. 
—Andrenidae, 224, 255. 
—Andricus seminator, 234, 260. 
—Anomoglossus pusillus, 188. 
—Anoplius: 
divisus, 222, 252. 
marginatus, 255. 
—A pidae, 224. 
—A pis mellifera, 214. 
—Augochlora: 
confusa, 187, 252. 
pura, 239, 256. 
—Bembex spinolae, 222, 223, 252. 
—Bombus: 
americanorum, 214. 
separalus, 290, 297. 
—Ceropalidae, 255. 
—Chloralictus cressoni, 277. 
—Cimbex americana, 208, 267. 
—Coeloixys rufitarsus, 231, 255. 
—Crabro interruptulus, 277. 
—Dielis plumipes, 222, 252. 
—Epeolus: 
cressonit, 285. 
pusillus, 231, 253. 
—Eumenes fraternus, 206, 270. 
—Eumenidae, 255. 
—Halictus nelumbonis, 255. 
—Ichneumon: 
extrematatus, 192. 
galenus, 192, 297. 
mendax, IQ, 192. 
zebratus, 285. 
—Ichneumonidae, 2061. 
—Larridae, 255. 
—Microbembex, 223: 
monodonta, 222, 223, 252. 
—Mutilla ornativentris, 222, 252. 
—Nematinae, 205. 
—Odynerus: 
anormis, 231, 255. 
tigris, 276. 
—Paniscus gemminatus, 285. 
—Pelopoeus cementarius, 214, 254. 
—Pimpla: 
conquisitor, 214. 
inguisitor, 19. 
region, 13-15; 
353 
—Plesia interrupta, 255. 
—Polistes, 241, 266: 
variatus, 276, 297. 
—Pteronus 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; diainage 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, 
304. 
Lawyer, 82, 85. 
Leaf-beetles, long-horned aquatic, 65, 
Tesh aise Te 
Leaf-bugs, hibernating, 202. 
Leeches: in Lake Michigan, 77, 80, 83, 
84; in lakes and ponds, 129; in 
streams, IOT, 103. 
