yard Sound, Mass., to Estado de Santa 

 Catarina, Brazil. Usually in or near 

 waves and shifting sand along ocean 

 beaches. Water line to 70 m (Williams, 

 1965). 



Bathynectes superbus (Costa, 1838). Mar- 

 tha's Vineyard, Mass., to Florida 

 Straits; off Norway, Shetland and 

 Faeroe Islands, to Angola; Mediterra- 

 nean Sea. 180-1,455 m (Christiansen, 

 1969). 



Callinectes sapidus Rathbun, 1896. Blue 

 crab. Nova Scotia to Mar del Plata, 

 Argentina; Bermuda. Introduced in 

 Mediterranean and Baltic seas. Fished 

 commercially. Variety of substrates in 

 rivers, estuaries and shallow oceanic 

 littoral to 40 m (Williams, 1965; Chace 

 and Hobbs. 1969). 



Callinectes similis Williams, 1966. Cape 

 May, N.J., to off Soto La Marina, Mex- 

 ico (140 miles south of the mouth of Rio 

 Grande River). Usually oceanic; water's 

 edge to 35-40 m, occasionally to 80 m, 

 once at surface over a 1,685-m depth. 



Carcinus maenas (Linnaeus, 1758). Nova 

 Scotia to Virginia; Iceland; Faeroe Is- 

 lands; Kvaenangen, Norway, southward 

 including parts of southern Baltic Sea, 

 and British Isles through Portugal; 

 Mauritania; Australia. Probably intro- 

 duced in United States and Australia, 

 and temporarily elsewhere. On variety of 

 substrates in estuarine and oceanic shal- 

 low littoral. Intertidal to occasionally 200 

 m (Christiansen, 1969). 



Ovalipes ocellatus (Herbst, 1799). Prince 

 Edward Island, Canada to Florida; 

 Texas coast (?). Variety of substrates but 

 especially on sand. Surface to 33 m (Wil- 

 liams, 1965). 



Portunus sayi (Gibbes, 1850). Nova Scotia 

 through Gulf of Mexico to Brazil; Ber- 

 muda and mid-Atlantic Ocean; Ker- 

 guelen Island. Usually pelagic among 

 floating Sargassum (Williams, 1965). 

 Portunus gibbesii (SUmpson, 1859). South- 

 ern Massachusetts to Texas; Venezue- 

 la; Surinam. Surface to 90 m, seldom 

 deeper (Williams, 1965). 

 Portunus spinimanus Latreille. 1819. New 

 Jersey through Gulf of Mexico and West 



Indies to southern Brazil; Bermuda. On 

 beach under Sargassum to 90 m (Wil- 

 liams, 1965). 



Family CANCRIDAE 

 Cancer borealis Stimpson, 1859. Nova 

 Scotia to south of Tortugas, Fla.; Ber- 

 muda. On various substrates, intertidal 

 to 800 m; shallower in north than in 

 south, some seasonal movement (Wil- 

 liams, 1965; Jeffries, 1966). 



Cancer irroratus Say, 1817. Labrador to 

 Florida. On various but usually coarse 

 substrates, low water mark to 575 m; 

 shallower in north than in south, some 

 seasonal movement (Williams, 1965; Jef- 

 fries. 1966). 



Family XANTHIDAE 

 Eurypanopeus depressus (Smith, 1869). 

 Massachusetts Bay and Provincetown, 

 Mass., through Florida to Texas; Ber- 

 muda; West Indies. Mainly oyster bars 

 in estuaries; oceanic littoral. Low water 

 mark to 50 m (Williams, 1965). 



Hexapanopeus angustifrons (Benedict and 

 Rathbun, 1891). Vineyard Sound, 

 Mass., to Port Aransas, Tex.; Bahamas; 

 Jamaica. Shelly substrates in high salin- 

 ity estuaries, but mainly oceanic. Near- 

 shore to 140 m (Williams, 1965). 



Neopanope sayi (Smith, 1869). Miramichi 

 Bay, Prince Edward Island, and Cape 

 Breton Island, New Brunswick, to 

 Crooked Island Sound, Fla. Introduced, 

 Swansea, Wales. Various substrates, but 

 mainly mud in estuaries. Low tide mark 

 to 25 m (Williams, 1965; Abele. 1972). 



Panopeus herbs tii H. Milne Edwards, 

 1834. Boston (?), Woods Hole, Mass., to 

 Uruguay; Bermuda. Variety of sub- 

 strates, estuarine and oceanic. Intertidal 

 to 20 m (Williams, 1965; Chace and 

 Hobbs, 1969). 



Rhithropanopeus harrisii (Gould, 1841). 

 Original range, estuaries from New 

 Brunswick, Canada, to Veracruz, Mex- 

 ico; northeastern Brazil. Introduced, 

 Coos Bay, Oreg., and San Francisco 

 Bay, Calif. ; northwest Europe and Black 

 Sea. Water's edge to 35 m (Williams, 

 1965; Christiansen, 1969). 



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