96 



NOBTH AMERICAN" FAUNA. 



[No. 36 



laceyi, Reithrodontomys, 47, 48. 

 lecontei, Mus, 8. 



Reithrodon, 19. 

 lecontii, Mus, 7, 13, 19. 



Reithrodontomys, 19. 

 levipes, Eeithrodontomys, 64-65. 

 longicauda, Ochetodon, S, 13, 33. 



Reithrodon, 8, 33. 



Reithrodontomys, 33. 

 megalotis, 33. 

 longieaudus, Reithrodontomys megalotis, 33-34. 

 luteolus, Reithrodontomys rufescens, 57-58. 



M. 



Measurements, table of cranial, 81. 

 megalotis, Reithrodon, 8, 13, 26. 



Reithrodontomys megalotis, 8, 12, 13, 26-29. 

 merriami, Reithrodontomys humuiis, 12, 21-22. 

 mexicanus, Ochetodon, 8, 13, 47, 50, 70. 



Reithrodon, 8, 47, 50, 70. 



Reithrodontomys, 50. 



mexicanus, 9, 64, '2'0-72. 

 microdon, Reithrodontomys microdon, 64, 80. 

 mUleri, Reithrodontomys, 64, 74-75. 

 modestus, Reithrodontomys australis, 9, 63. 

 montanus, Ochetodon, 8, 13, 24. 



Reithrodon, 8, 24. 



Reithrodontomys, 8, 10, 13, 24-26. 

 Mus, 7, 8. 



humilis, 7, 19. 



humuiis, 7, 19. 



lecontei, 8. 



lecontii, 7, 13, 19. 

 mustelinus, Reithrodontomys fulvescens, 54-55. 



■ N. 



nebrascensis, Reithrodontomys, 9. 



Reithrodontomys dychei, 30, 31. 

 nelsoni, Reithrodontomys fulvescens, 53-54. 

 nerterus, Reithrodontomys colimcc, 60-61. 

 nigrescens, Reithrodontomys megalotis, 32-33. 



0. 



obscurus, Reithrodontomys megalotis, 39, 40. 

 Ochetodon, 8, 13. 



humilis, 8, 13, 19. 



longicauda, 8, 13, 33. 



mexicanus, 8, 13, 47, 50, 70. 



montanus, 8, 13, 24. 



sumichrasti, 8, 13. 

 orizabce, Reithrodontomys chrysopsis, 69. 

 otus, Reithrodontomys, 55-56. 



Reithrodontomys levipes, 55. 



P. 



pallidus, Reithrodontomys, 9, 33, 34. 

 Pelages, 12. 



peninsulee, Reithrodontomys megalotis, 35. 



Rhithrodontomys, 35. 

 perotensis, Reithrodontomys, 64, 69-70. 



R. 



raviventris, Reithrodontomys raviventris, 10, 41- 

 42. 



Reithrodon, 8, 13. 

 carolinensis, 8, 

 humilis, 8 , 19. 



Reithrodon— Continned. 

 lecontei, 19. 

 longicauda, 8, 33. 

 megalotis, 8, 13, 26. 

 mexicanus, 8, 47, 50, 70. 

 montanus, 8, 24. 

 sumichrasti, 8, 50, 

 Reithrodontomys, genus, 8, 10, 13. 

 genus, groups, 14-16. 



chrysopsis group, 15, 64, 66-70. 



fxilvesceiis group, 15, 43-56. 



humuiis group, 14, 19-24. 



levipes group, 15, 64-66. 



megalotis group, 14, 24-43. 



mexicanus group, 15, 64, 70-77. 



rufescens group, 15, 56-63. 



tenuirostris group, 16, 64, 78-81. 

 genus, key to species, 16. 



species, list of, 14. 



type localities, list of, 14. 

 subgenus, 10, 19, 64. 



species, list of, 14. 



type localities, list of, 14. 

 Reithrodontomys albescens albescens, 10, 22-23. 

 albescens griseus, 23-24. 

 alleni, 59. 

 amoenus, 55. 

 amoles, 40. 



australis australis, 62-63. 



modestus, 9, 63. 



vulcanius, 62. 

 catalinse, 40-41. 

 cherriei, 73. 



jalapse, 70. 

 cherrii jalapse, 71. 

 chrysopsis chrysopsis, 64, 66-68. 



orizabae, 69. 



tolucee, 68-69. 

 chrysotis, 48, 49. 

 coUmse, 39. 



colimse, 59-60. 



nerterus, 60-61. 

 costaricensis, 73, 74. 



jalapse, 70, 71. 

 creper, 79. 

 dorsalis, 61-62. 

 deserti, 9. 

 dychei, 23. 



nebrascensis, 30, 31. 

 fulvescens aurantius, 12, 48-49. 



cMapensis, 53. 



difficilis, 50-51, 71. 



fulvescens, 43-44. 



helvolus, 52-53. 



intermedins, 11, 47-48. 



mustelinus, 54-55. 



nelsoni, 53-54. 



tenuis, 9, 45-47. 



toltecus, 51-52. 

 gracilis, 64, 76-77. 

 griseoflavus, 45, 46. 



helvolus, 52. 

 griseus, 30. 

 hirsutus, 64, 66. 

 humilis, 19. 



dickinsoni, 19, 20. 

 humuiis humuiis, 13, 19-20. 



impiger, 20-31. 



merriami, 12, 21-22. 



