Members of the family Crangonidae, often called sand shrimp or blacktailed shrimp, are common inhabitants of sandy, muddy, or mixed bottoms. Recent identification of specimens at the Allan Hancock Foundation has provided a good series of shrimp of this family. New records of four species have been found outside their recorded ranges. Sclerocrangon alata is reported for the first time from California. The range of Neocrangon zacae is extended south from Baja California to Colombia. Crangon munitellus has been found in Baja California. Crangon lomae is reported for the first time since the description of the species in 1921.