Microtus abbreviatus Miller, 1899

Species diagnosis

General Characteristics

• Found on St. Matthew or Hall Islands
• Skull long and narrow; zygomatic width about equal to � the greatest length of the skull
• Interorbital region narrow, often with pronounced interorbital crest and appearing depressed when viewed from the side
• Zygomatic arches relatively slender
• m1 usually with 6 closed triangles between the two terminal loops

Alaska subspecies