Invasion

Invasion Description

1st Record: San Mateo County/CA/San Bruno Slough (1920, Kofoid 1921, cited by Carlton 1979)

Geographic Extent

San Mateo County/CA/San Bruno Slough (1920, Kofoid 1921, cited by Carlton 1979); Hunters Point/CA/San Francisco Bay (1944-1945, Museum of Comparative Zoology, cited by Carlton 1979); Mare Island, Benicia, Yerba Buena, San Francisco/CA/San Francisco Bay (Wallour 1960)