title: Trilobopsis
text: # Trilobopsis
  
  Trilobopsis is a genus of small, air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Polygyridae.
  
  ## Distribution
  
  The distribution of this species is restricted to Oregon and California, USA.
  
  ## Description
  
  The shells of species in this genus are somewhat globular and about 5 to 8 mm in diameter (1/4 to 3/16 inch).
  
  Snails in this genus are distinguished from related snails on the basis of their reproductive anatomy.
  
  ## Species
  
  Species in the genus Trilobopsis include:
  
  * Trilobopsis loricata (Gould, 1846)
     * Trilobopsis loricata lowei (Pilsbry, 1925)
     * Trilobopsis loricata mariposa Pilsbry, 1940
     * Trilobopsis loricata nortensis (Berry, 1933)
     * Trilobopsis loricata perforata Pilsbry, 1940
     * Trilobopsis loricata sonomaensis (Hemphill, 1911)
  * Trilobopsis penitens (Hanna & Rixford, 1923)
  * Trilobopsis roperi (Pilsbry, 1889)
  * Trilobopsis tehamana (Pilsbry, 1928)
  * Trilobopsis trachypepla (Berry, 1933)
  