Invasion

Invasion Description

1st Record: New Haven/CT/Long Island Sound (Perkins 1871; Verrill and Smith 1873); 'The only locality in which I have found this species is an old half-buried wreck near the entrance of the harbour' (Perkins 1871).

Geographic Extent

South Groton/CT/Fishers Island Sound (1937-1959, Wallour 1960); Fisher's Island/NY/Long Island Sound (1922-1924, (MCZ Malacology 120621, Museum of Comparative Zoology 2012); New London/CT/Long Island Sound (Wallour 1960); New Haven/CT/Long Island Sound (Perkins 1871; Verrill and Smith 1873; Wallour 1960); Bridgeport/CT/Long Island Sound (Wallour 1960); Norwalk/CT/Long Island Sound (Wallour 1960); Fishers Island/NY/Long Island Sound (Wallour 1960); Cold Spring Harbor/NY/Long Island Sound (Balch 1899)