MARINE ISOPODA OF NEW ENGLAND, ETC. 311 



II.— BOPYRID^. 



This family has not been studied, and only a list of the species, fur- 

 nished by Professor S. I. Smith, is included. They arc parasitic on Crus- 

 tacea, and at maturity, the females especially, arc generally much dis- 

 torted and degenerate, often losing a great proporticp of their appendages. 

 The males are much smaller than the females, and of a more normal 

 form, aud they and the young forms must therefore be relied upon to 

 indicate the affinities of this group to the rest of the order. According 

 to Dr. Fritz Miiller these forms indicate a relationship to the Oniscidce, 

 and especially to the genus Ligia, and in deference to his authority I 

 have inserted them at this place. 



Cepon distortus Leidy. 



Cepon distortus Leidy, Jour. Acad. Nat. Sci.,II, vol. iii, p. 150, pi. xi, figs. 26-32, 

 1855. 

 Harger, This Report, part i, p. .573 (279), 1874 ; Proc. U. S. Nat. Mus., 

 1879, vol. ii, p. 157, 1879. 

 Leidya distorta Comalia and Panceri, Mem. R. Accad. Sci. Torino, II, torn, xix, 

 p. 114, 1861. 

 "From the branchial cavity of Gelasimus pngilator, Atlantic City, 

 New Jersey." (Leidy.) 



Gyge Hippolytes Bate and West wood (Kioyer). 



Bopynts Hippolytes Kroj-er, Gronlands Amfipoder, p. 306 (78), pi. iv, fig. 22, 1838; 

 Monog. Fremst. SUegten Hippolyte's uordiske Arter, p. 262, 1842 ; Voy. 

 en Scand., Crust., pi. xxviii, fig. 2, 1849. 

 Edwards, Hist. nat. des Crust., iii, p. 283, 1840. 

 Stimpsor^, Proc. Acad. Nat. Sci. Philadelphia, 1863, p. 140. 

 Gyge Hippolytes Bate aud Westwood, Brit. Sess. Crust., vol. ii, p. 230,1868. 

 Buchholz, Zweite deutsche Nordpolfahrt, p. 286, 1874. 

 Metzger, Nordseefahrt der Pomm., p. 286, 1875. 

 Miers, Ann. Mag. Nat. Hist., IV, vol. xx, p. 64, (14), 1877. 

 Smith in Harger, Proc. U. S. Nat. Mus., 1879, vol. ii, p. 1.57, 1879. 



Massachusetts Bay !, off Salem, on Hippolyte spinus^ 30 fathoms, sand 

 and mud, August 4, 1877 ; on H. FahricU, 22 fathoms, gravel, August 

 4, 1877 ; on R. securifrons,90 fathoms, soft mud, August 14, 1877, Casco 

 Bay !, on H. polaris and H. pusiola, 1873. Bay of Fundy !, on R. spinus 

 and R. pusiola, 1868, 1872. Off Halifax, Nova Scotia, 43 fathoms, Sep- 

 tember 27, 1877. Gulf of Maine !, 40 miles east of Cape Ann, Massa- 

 chusetts, on R. securifrons, 160 fathoms, soft mud, August 19, 1877; 

 also near Cashe's Ledge, on R. spinas 27 and 40 fathoms, rocks and 

 gravel. 



East side of Smith's Strait, north latitude 78° 30' (Stimpson). "Dis- 

 covery Bay," north latitude 81° 44', Greenland (Miers). British Islands 

 (Bate & Westwood). Scandinavian coasts (Kroy ere* a?.). Spitzber- 

 gen (Kroyer). 



