What is "tylomys"

Tylomys is a genus of rodent in the family Cricetidae. It contains the following species:

• Chiapan climbing rat (Tylomys bullaris)
• Fulvous-bellied climbing rat (Tylomys fulviventer)
• Mira climbing rat (Tylomys mirae)
• Peters's climbing rat (Tylomys nudicaudus)
• Panamanian climbing rat (Tylomys panamensis)
• Tumbala climbing rat (Tylomys tumbalensis)
• Watson's climbing rat (Tylomys watsoni)