Shrimps, crabs and lobsters form an important source of food supply.
Lamarck at the same time founded the class Crustacea for the lobsters, crabs and water-fleas, also until then included in the order Aptera of Linnaeus.
comprising the primitive phyllopods, the minute copepods, the parasitic cirrhipedes and the powerful crabs and lobsters, and the highly elaborated sand-hoppers and slaters.
birds - but also in ants, spiders, the higher crabs and molluscs.
Crabs are next in value and are caught chiefly along the East Shore and in Anne Arundel and Calvert counties on the West Shore.