CRUSTACEA. 7 



THORACOSTRACA. DECAPODA. 



PILUMNIDAE. 



Under stones in mud. 



Mass. — From Massachusetts Bay south^vard. 



R. I. 



Con:n^. 



16. Xeopaxope texaxa sayi (Smith). 



Mud crab. 



Panopeus sayi Smith, Proc. Boston soc. nat. hist., 1869, vol. 

 12, p. 284. "New Haven, Coxx. * * * Eastham, Cape Cod." 



Panopeus sayi Benedict & Rathbun, Proc. U. S. nat. mus., 

 1891, vol. 14, p. 363, pi. 22, fig. 4, pi. 23, figs. 7, 8. 



Under stones in mud. 



Mass. — From Provincetown southT^^ard. 



R. I. 



COXN. 



17. Hexapaxopeus axgustifeoxs (Benedict & Rathbun). 



]VIud crab. 



Panopeus angustifrons Benedict & Rathbun, Proc. U. S. nat. 

 mus., 1891, vol. 14, p. 373, pi. 22, fig. 3, pi. 24, fig. 18. Vixe- 

 YARD Sound to Brazil. 



Mass. — Vineyard Sound ; Buzzards Bay. 

 R. I. — Xarragansett Bay. 



Conn. — Off Milf ord, Stratford, Bridgeport, Xor^\'alk ; on 

 oyster grounds. 



18. Rhithropanopeus haerisii (Gould). 



Pilumnus harrisii Gould, Invert. Mass., 1841, p. 826. "Cam- 

 bridge MARSHES ; * * * CLINGING TO FLOATING SEAWEED IN 



Charles River." 



Panopeus harrisii Benedict & Rathbun, Proc. U. S. nat. mus., 

 1891, vol. 14, p. 378, pi. 21, fig. 2, pi. 24, fig. 16. 



