1G8 BULLETIN 54, UNITED STATES NATIONAL MUSEUM. 



e. All legs free of spines JEga gracilipes Hansen 



/''. Legs furnished with spines. 

 /. Uropoda extend beyond the tip of the abdomen. 



JEya symmetrica Richardson 

 /'. Uropoda,do not extend beyond the tip of the abdomen. 



JEga ventrosa M. Sars 

 d' '. Eyes very small sEga microphthalma Dana 



.(EGA PSORA (Linnaeus). 



Oniscus psora LINNAEUS, Fauna suecica, 2d ed., 1761, p. 499, No. 2054; Syst. Nat., 

 12th ed., I, 1767, p. 1060. O. FABRICIUS, Fauna Groenlandica, 1780, p. 249. 



jEga emarginata LEACH, Trans. Linn. Soc. London, XI, 1815, p. 370; Diet. Sci. 

 Nat,, XII, 1818, p. 349. DESMAREST, Consid. Crust., 1825, p. 305, pi. XLVII, 

 figs. 4-5. 



JEga entaittee LATREILLE, Regne Anim., IV, 1829, p. 134. 



JEga emarginata GOULD, Rept. Geol. Mass., 1835, p. 549. 



JEga (Oniscus psora) KR0YER, Dansk. Vid. Selsk. Afh., VII, 1838, p. 318. 



JEga emarginata MILNE EDWARDS, Hist. Nat. Crust., Ill, 1840, p. 240. GOULD, 

 Invert. Mass., 1841, p. 338. MILNE EDWARDS, Regne Anim. Crust., 1849, 

 pi. iv, fig. 4; pi. LXVII, fig. 1. 



JEga psora LILLJEBORG, Ofvers. Vet.-Acad. Forh., VII, 1850, p. 84; VIII, 1851, p. 

 24. LiJTKEN.Vidensk. Meddel., 1859, pp. 65, 179; 1861, p. 181 (7). SCHKEDTE, 

 Ann. Mag. Nat. Hist, (4), 1, 1868, p. 12. BATE and WESTWOOD, British Sessile- 

 eyed Crustacea, II, 1868, p. 283. M. SARS, Chr. Vid.-Selsk. Forh., 1869, 

 p. 261. G. O. SARS, Chr. Vid.-Selsk. Forh., 1872, p. 275 (32). VERRILL, 

 Am. Jour. Sci. (3), V, 1873, p. 16. SMITH and HARGER, Trans. Conn. Acad. 

 Sci., Ill, 1874, p. 22. LUTKEN, Crustacea of Greenland, 1875, p. 150. 

 MEINERT, Naturh. Tidsskr. (3), XI, 1877, p. 89. MIERS, Ann. Mag. Nat. 

 Hist. (4), XIX, 1877, p. 134. HARGER, Proc. U. S. Nat. Mus., II, 1879, 

 p. 161; Report U. S. Commissioner of Fish and Fisheries, Pt. 6, 1880, pp. 384- 

 387, pi. x, fig. 64 (see Harger for synomymy). SCHIOSDTE and MEINERT, 

 Nat. Tidsskr. (3), XII, 1879-80, pp. 357-360, pi. vm, figs. 5-6. MIERS, 

 Journ. Linn. Soc. London, Zool., XV, 1881, pp. 65-66. HANSEN, Videnska- 

 belige Meddelelser fra den naturhistoriske Forening i Kjobenhavn, 1887- 

 1888, p. 183. SARS, Crust, of Norway, II, 1899, p. 59, pi. xxiv. RICHARDSON, 

 American Naturalist, XXXIV, 1900, p. 218; Proc. U. S. Nat. Mus., XXIII, 

 1901, p. 521. AXEL OHLIN, Bihang till K. Svenska Vet.-Akad. Handl., 

 XXVI, Afd. iv, 1901, pp. 22-23. 



Localities. Off Marthas Vineyard; Georges Bank; Browns Bank; 

 Fishers Island Sound; La Have Bank; Gulf of Maine; Western Bank; 

 Gloucester; Sable Island Bank; between Peters Bank and Banque- 

 reau; Nova Scotia; Grand Bank; Newfoundland; Gulf of St. Lawrence; 

 Nakvak, Labrador; Holstensborg, Nanortalik, Ivigtut, Julianehaab, 

 Arsukfjord, Godhavn, Egedesminde, Ikerasak, and Umanek, Green- 

 land; North Greenland in Davis Straits; Hudsons Bay; also Ireland; 

 British Isles; North Sea; Finmark; Iceland; BjonensBay; Spitzbergen; 

 in the German Sea; Kattegat; between the delta of the Mississippi and 

 Cedar Keys, Florida; latitude 43 34' north, longitude 49 west; lati- 

 tude 43 25' north, longitude 59 50' west; latitude 42 47' north; 

 longitude 65 30' west. 



Depth. 30-640 fathoms. 



