CRUSTACEA. 39 



ARTHROSTRACA. ISOPODA. 



CYMOTHOIDAE. 



Livoneca ovalis Harger, Rept. tJ. S. commr. of fish & fish- 

 eries, pt. 1, for 1871-1872 (1873), p. 572 [278]; op. cit., pt. 6, 

 for 1878 (1880), p. 395, pi. 11, fig. 67. 



From scup and bluefish. 



Mass. — .Vineyard Sound. 



Conn. — Thimble Islands ; New Haven. 



LIMNORIIDAE. 



117. LiMNORiA LiGNORUM (Rathke). 



Gribble. 



Cymothoa lignornm Rathke, Skrivt. naturh. selsk., 1799, vol. 

 5, pt. 1, ]). 101, pi. 3, fig. 14. [Western coast of Norway 

 FROM Bergen to Nordland.] 



Limnoria lignorum Harger, Rept. U. S. commr. of fish & 

 fisheries, pt. 1, for 1871-1872 (1873), p. 571 [277], pi. 6, fig. 25. 



Burrows in wood. 



From Bay of Fundy to western end of Long Island Sound ; 

 to a depth of 10 fathoms. 



SPHAEROMIDAE. 



118. Sphaeroma quadridentatum Say. 



Sphaeroma quadridentata Say, Journ, acad. nat. sci. Phil., 

 1818, vol. 1, p. 400. "coast of Georgia and of East 

 Florida." Harger, Rept. U. S. commr. of fish & fisheries, pt. 1, 

 for 1871-1872 (1873), p. 569 [275], pi. 5, fig. 21. 



Under stones and rocks and on seaweeds. 



Mass. — Provincetown. 



Common on southern shore of New England. 



