Invasion

Invasion Description

1st Record: St. Leonards/MD/St. Leonards Creek, Patuxent River (1900, Pilsbry 1900, ANSP 22483, Academy of Natural Sciences of Philadelphia 2013)

Geographic Extent

St. Leonards/MD/St. Leonards Creek, Patuxent River (1900, Pilsbry 1900, ANSP 22483, Academy of Natural Sciences of Philadelphia 2013); Mollusk/VA/Rappahannock River (Wass 1972); Crisfield/MD/Little Annemessex River (Allen 1954); Norfolk/VA/"swamps", Hampton Roads (Wass 1972); Fisherman's Island (Northampton County)/VA/Chesapeake Bay (Mouth) (1935, U.S. Museum of Natural History collections);