INDEX. 



Aldrich, J. M., on examination of stomachs of 

 striped spermophile, 11, 40-42' 

 Eountiesin Iowa. 20. 

 Kansas. 20. 

 Minnesota. 20-21. 

 Montana, 21-22. 

 North Dakota, 18-19. 

 South Dakota, 19. 

 Washington, 22. 

 Bisulphide of carbon, experiments with, 27-30. 



success of in destroying 

 spermophiles, 29-30. 

 Circular on distribution, 12. 

 Colorado, injury to crops by striped spermophile, 



38. 

 Franklin's spermophile, 48-57. 



appearance in spring, 51- 



52. 

 description, 48-49. 

 food, 55-57. 

 habits, 51. 



injury to crops, 52-55. 

 introduction into New 



Jersey, 50-51. 

 range, 49-50. 



table showing contents 

 of 29 stomachs, 57. 

 Gillette, Q. P., on examination of stomachs of 

 striped spermophile, 40. 

 food-habits of striped spermo- 

 phile, 10-11. 

 Hawks and owls That feed on spermophiles, 16-17. 

 Hilgard, E. "W„ on destruction of ground squirrels 

 with bisulphide of carbon, 10, 

 . 29-30. 

 Dlinois, injury to crops by gray and striped sper- 

 mophiles. 54-55. 

 Iowa, bounties in, 20. 



injury to crops by striped spermophile, 

 36-37. 

 Kansas, bounties in, 20. 



injury to crops by striped and gray sper- 

 mophiles, 38. 52-53. 

 Kennicott's spermophile, 58-59. 



description, 58. 

 food, 59. 

 habits, 58-59. 

 range, 58. 

 Mexican spermophile, 46-48. 



description, 46. 

 habits, 47-48. 

 range, 47-48. 

 Minnesota, bounties in. 20-21. 



injury to crops by striped and gray 

 spermophiles, 36. 



Montana, bounties in, 21-22. 



Nebraska, injury to crops by striped, gray, and 



Kennicott's spermophiles, 37-38, 52. 

 North Dakota, bounties in, 18-19. 



injury to crops by gray and Rich- 

 ardson's spermophiles. 53, 64- 

 66. 

 Poison, bisulphide of carbon, 26-30. 

 strychnine, 25-26. 

 free distribution of, 23 

 Richardson's spermophile, 59-67. 



description. 59-60. 

 food, 66. 

 habits, 60-64, 

 injury to crops, 64-60. 

 range, 60. 



tables showing con- 

 tents of 18 stomachs, 

 67. 

 South Dakota, bounties in, 19 

 Spermophiles, enemies of, 15-18. 



badger, 17. 

 hawks, 16. 

 owls, 16. 

 weasel, 18. • 

 found in stomachs of hawks and 



owls, 17. 

 species in United States, 9. 



Mississippi Valley, 10, 30. 

 Spermophilus tridecemlineatus, 31-46. 

 franklini, 48-57. 

 mexicanus, 46. 

 range of genus, 9. 

 richardsoni, 59-67, 



elegans, 59. 

 spilosoma obsoletus, 58-59. 

 Striped prairie spermophile, 31-46. 



appearance in spring, 



34-35. 

 description, 31. 

 habits, 32-34. 

 hibernation, 35-36. 

 injury to crops, 36-38 

 range. 31-32. 

 table showing con- 

 tents of 80 stomachs 

 43-45. 

 table showing con" 

 tents of cheek 

 pouches, 46. 

 "Washington, bounties in, 22. 



injury to crops by Townsend'a 

 spermophiles, 24. 

 "Wyoming Spermophile, 30. 

 "Wyoming, injury to crops by spermophiles, 60. 



