The Coast Mole has short, soft, velvety fur ranging in colour from blackish-brown to grey, and paler in summer. The front feet are broad and shovel-like with long, flat claws; the hind feet are not enlarged and have short, weak claws. The snout is long and almost naked. The eyes are minute; external ears are absent. The tail is short and nearly naked. Males are usually larger than females.
The skull has 44 teeth. The first upper incisor is long and broad; the other upper incisors are conical and similar in size. The auditory bullae are complete.
IdentificationThe only species that could be confused with the Coast Mole is Townsend's Mole (Scapanus townsendii). The two moles are similar in external appearance and cranial traits, and can only be distinguished by size. Townsend's Mole has a larger body (total length greater than 175 mm and length of the hind foot greater than 24 mm) and head (skull length greater than 37 mm and palatal length greater than 16 mm).
Dental Formulaincisors: 3/3
Measurementstotal length: 162 (145-181) n = 129
tail vertebrae: 33 (28-41) n = 121
hind foot: 21 (18-24) n = 128
weight: 69.1 (46.0-78.1) n = 16 (males)
56.6 (45.6-66.9) n = 15 (females)