Notiosoricini, whose members are known as the North American gray shrews, is a tribe of shrews in the family Soricidae, including the genera Megasorex and Notiosorex. They are found across the southwestern United States and most of Mexico.^[1]

The tribe includes the following species:

• Genus Megasorex
  • Mexican shrew, M. gigas
• Genus Notiosorex
  • Cockrum's gray shrew, N. cockrumi
  • Crawford's gray shrew, N. crawfordi
  • Large-eared gray shrew, N. evotis
  • Villa's gray shrew, N. villai

• https://animaldiversity.org/accounts/Notiosoricini/classification/
• http://www.departments.bucknell.edu/biology/resources/msw3/browse.asp?id=13700443
• https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=709679#null