53 



difformis, I, 49, II, 65. 

 thompsoni, T, 49, II, 65. 

 velifer, I, 49, II, 65. 

 Ichthyomyzon, I, 52. 



argenteus, I, 52, II, 70. 

 hirudo, I, 52, II, 70. 

 Ichthyophorba, I, 16. 

 Ictalurus, I, 50, III, 75*. 

 furcatus, I, 50, II, 66. 

 punctatus, I, 50. 

 Icteria, IV, 175. 



virens, IV, 175. 

 Icteridffi, IV, 167, 182, VI, 13*, 24*, 



26*, 29*. 

 icterocephalus, Xanthocephalus, IV, 182. 

 Icterus, IV, 182. 



galbula, IV. 182, VI, 14*, 29*, 30*, 



31*. 

 spurius, IV, 182, VI, 14*, 29*, 30*. 

 Ictina, IV, 189. 



subcsrulea, IV, 189. 

 Ictiobus, I, 49. 

 Iguanidte, V, 45, 48. 

 Ilex decidua, berries, III, 144f. 

 iliaca, Passerella, IV, 181. 

 illinoensis, Peuciea, IV, 170, 180. 

 Illinois Agricultural Report, cited, I, 32. 

 Birds, Catalogue of, IV, 171-208. 

 List of Illinois species, IV, 204- 



208. 

 Table of families, IV, 167. 

 The number of species which 

 breed in the state, IV, 167. 

 Horticultural Society, Transactions, 



II, 72. 

 Crustacea, Key to, I, 17-24. 



List of, I, 3-25. 

 Fishes, A catalogue of, II, 37-70. 

 A partial catalogue of, I, 33-52. 

 rhefoodof, 11,71-89. 

 Mosses, Liverworts, and Lichens, A 



list of, il, 18-35. 

 Ornithology, Bibliography of, IV, 



168-170. 

 Orthoptera, A list of, I, 59-69. 

 State Laboratory of Natural His- 

 tory, Bulletins cited, VI, 35, 

 65, 88, 98. 

 State Natural History Society, III, 

 87. 

 illinoisensis, Canthocamptus, I, 14, 23, 



II, 89t, VI, 103f . 

 imbricata, Eretmochelys, V, 51. 

 imbricatus, Epicterus, III, 94t, lOSf, 120t, 



VI, 28t, 31t. 

 immunis, Cambarus, I, 4, 19, II, 82f, 



87t. Ill, 40t. 

 Imostoma, II, 39. 



shumardi, II, 39. 

 Impatiens fulva, II, 12. 

 impatienti?, Aphis, II, 12. 

 impuncticollis, Amara, VI, 42*. 

 inaequalipennis, Listronotus, III, IBOf. 

 incisor, Ichthelis, I, 37, II, 45. 

 inconstans, Eucalia, I, 42, II, 51, 78*, 



85*, VI, 68*. 

 incrassatus, Geopinus, III, 93t, Vf, 57t. 

 inda, Euryomia. Ill, 120t, ]39f. 

 Indian Com, II, 12. 

 indica, Eleu^ine, 11, 16. 

 Indigo-bird, IV, 181, VI, 13*, 18*, 20*, 



21*, 24*, 25*. 

 Inedible fruits. III, 101. 

 infestans, Peronospora, I, 55. 

 infumata, Sialis, III, 49t. 

 infuscata, Locusta, I, 62. 



Tragocephala, I, 62. Ill, 90f. 

 infuscatus, Gomphocerus, I, 62. 

 Injurious insects. III, 93t, 102f, 115f, 



124t, 135t, 138t, 139t, UOf, 



142t, 144t, 145t. 

 inquinata. Mantis, I, 60. 

 inquinatus, Aphodius, II, 77t, III, 50f, 



90t, 92t, 120t, 1381, 140t, VI, 



lit, 15+, 27t, 28t, 29t, 31+. 

 inscriptus, Ichthelis, I, 38, II, 46. 



Xenotis, II, 46. 

 insculptup, Chelopus, V, 57. 

 Insectivorous birds, III, 14, 101. 

 Coleoptera, III, 153*, VI, 35. 



Notes on, HI. 153-160. 

 Cyprinidffi, VI, 74. 

 minnows, VI, 73*. 

 Insect larv«. II, 80f . Ill, Slf, 43t. 45+, 



57t,94t,107t,VI,39t, 40t, 59t, 



60t, 61t, 62t. 74t, lOlt, 102f, 



106t. 

 pupas, III, 35+. 

 oscillations. The regulative action 



of Birds upon, VI, 3-32. 

 Insects, II, 75t, 76t, 77t, 78t, 79t, 80t, 



81t, 82t, 83t, 84t, 85+, 86+, III, 



