Stenotrema

Stenotrema is a genus of air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Polygyridae. These are typically small to medium-sized snails, with a velvety or hairy shell surface, and a narrow aperture which is usually closely guarded by well-developed "teeth".

Distribution
The genus occurs throughout most of North America, from Alaska, though Canada and the United States, into Mexico.

Species
Genus Stenotrema contains the following species and subspecies:


 * Stenotrema altispira (Pilsbry, 1894)
 * Stenotrema angellum Hubricht, 1858
 * Stenotrema barbigerum (Redfield, 1856)
 * Stenotrema blandianum (Pilsbry, 1903)
 * Stenotrema brevipila (Clap, 1907)
 * Stenotrema burringtoni Grimm, 1971
 * Stenotrema calvescens Hubricht, 1961
 * Stenotrema cohuttense (Clapp, 1914)
 * Stenotrema deceptum (Clapp, 1905)
 * Stenotrema depilatum (Pilsbry, 1895)
 * Stenotrema edgarianum (Lea, 1841)
 * Stenotrema edvardsi (Bland, 1856)
 * Stenotrema exodon (Pilsbry, 1900)
 * Stenotrema exodon turbinella (Clench & Archer, 1933)
 * Stenotrema florida Pilsbry, 1940
 * Stenotrema hirsutum (Say, 1817)
 * Stenotrema hirsutum barbatum (Clapp, 1904)
 * Stenotrema hubrichti Pilsbry, 1940 / Euchemotrema hubrichti (Pilsbry, 1940)
 * Stenotrema labrosum (Bland 1862)
 * Stenotrema magnifumosum (Pilsbry, 1900)
 * Stenotrema maxillatum (Gould, 1848)
 * Stenotrema pilsbryi (Ferriss, 1900) - Rich Mountain Slitmouth
 * Stenotrema pilula (Pilsbry, 1900)
 * Stenotrema simile Grimm, 1971
 * Stenotrema spinosum (Lea, 1830)
 * Stenotrema stenotrema (Pfeiffer, 1842)
 * Stenotrema unciferum (Pilsbry, 1900)
 * Stenotrema unciferum caddoense (Archer, 1935)
 * Stenotrema waldense Archer, 1938

See Euchemotrema for other closely related taxa, many of which are sometimes placed in Stenotrema.