Amblychila baroni Rivers, 1890
Amblychila cylindriformis Say, 1823
Amblychila picolominii Reiche, 1839
Amblychila schwarzi Horn, 1803

Omus californicus audouini Reiche, 1838
Omus californicus californicus Eschscholtz, 1829
Omus dejeani Reiche, 1838
Omus laevis laevis Horn, 1866
Omus laevis sequoiarum Crotch, 1874