Isopoda 13]? 



1887. Aega crenulata Hansen, Vid. Medd. Naturh. Foren. i Kj<^benhavn, p. 183. 



1899. Aega crenulata Saks, G. 0., Crust. Norway, 2, p. 61, pi. 25, fig. 3. 



1900. Aega crenulata Richardson, American Naturalist, 34, p. 218. 



1901. Aega crenulata Richardson, Proe. U. S. Nat. Mus., 23, p. 521. 



1904. Aega crenulata Norman, Ann. Mag. Nat. Hist. (7), 14, p. 434. 



1905. Aega crenulata Richardson, Bull. 54, U. S. Nat. Mus., p. 18. 



Aega crenulata Hansen, Danish Ingolf Exped., Crust. Malacost., vol. 3, 

 pt. 5, p. 142, pi. 13, figs. 2a-2b. 



Distribution: This species is recorded as parasitic on Somniosus micro- 

 cephalus and on Malva byrkelange. It ranges from western Greenland to west 

 Finmark and has been recorded as far south as western Ireland (Tattersall) ; 

 off Jutland and the southern coasts of Norway. 



Localities recorded: West Greenland — Umanak, lat. 70° 40' N., on Scynius 

 microcephalus from Ritenbenk (Anderson), Julianehaab in lat. 60° 43' N., collected 

 by Rev. S<^rensen. 



Europe : 



Komag fjord, west Finmark, Bergen, in Trondhjem fjord, in Christiania 

 fjord and at some places on the south and west coasts of Norway; in Skager 

 Rak at the north coast of Jutland; off Shetland, lat. 61° 30' N., long. 0° 10' E., 

 101 fathoms (Zirwas); off Aberdeen, Scotland (Matthews); off the west coast 

 of Ireland, 242 fathoms (Tattersall) ; Iceland, several records without specific 

 localitv; Orford, north coast of Iceland; Dyre fjord, northwest coast of Iceland; 

 south of Iceland, lat. 62° 57' N., long. 19° 58' W., 508 fathoms, collected by the 

 Thor; southwest of Iceland; Ingolf station 81, lat. 61° 44' N., long. 27° 00' 

 W., 485 fathoms, temp. 6-1°, 1 specimen; from the Faeroes (Schiodte and 

 Meinert), lat. 62° 30' N., long. 5° 16' W., 250 fathoms. 



Aega arctica Ltitken. 



1858. Aega arctica Lijtken, Vid. Medd. Nat. Foren. i Kjobenhavn, p. 71, 



pi. 1 A, figs. 1-3. 

 1879-80 Aega arctica Schiodte & Meinert, Naturh. Tidsskrift (3), 12, pp. 



374-375. 

 1887-88. Aega arctica Hansen, Vid. Medd. Nat. Foren. i Kjobenhavn, pp. 



183-184. 



1899. Aega arctica Sars, Crust. Norway, 2, p. 63, pi. 26, fig. 2. 



1900. Aega arctica Richardson, American Naturahst, 34, p. 218. 



1901. Aega arctica Richardson, Proc. U.S. Nat. Mus., 23, p. 522. 

 1905. Aega arctica Richardson, Bull. 54, U.S. Nat. Mus., p. 182, fig. 165. 



Range: A single specimen has been recorded from Finmark, another from 

 the west coast of Ireland; several records from the vicinity of Iceland, also West 

 Greenland. 



Localities recorded: North America: — Liitken states that the type is from 

 Greenland, parasitic on Scymnus microcephalus; it has subsequently recorded 

 from West Greenland, at Umanak, in lat. 70° 40' N., Lille-Karajok fjord, lat. 

 70° 20' N.; Hundeoerne near Egedesminde, lat. 68° 42'; Julianehaab, lat. 60° 43' 

 N., East Greenland at Angmagsalik, lat. 65° 30' N., many specimens from 

 Greenland without specific locality; Davis strait, Ingolf Station 25; lat. 63° 

 30' N., long. 54° 25' W., 582 fathoms, temperature 3-3°. 



Europe: 



Finmark, on shark; southwest of the Faeroes, lat. 61° 15' N., long. 9° 35' 

 W. 463-515 fathoms, off the west coast of Ireland, 388 fathoms, Iceland, from 

 the' northwestern and the southern coast (Schiodte & Meinert) off West Ice- 

 land— Lat. 64° 13' N., long. 27° 30' W., 440 fathoms, by the Thor; Ingolf Station 



