30d Canadian Arctic Expedition, 1913-18. 



of both eastern and western Greenland, from several stations in Ellesmere land 

 and Grinnell land; Beechey island, Arctic America, type locality and finally 

 from 20 miles off Churchill river. 



This species has been recorded from shallow water down to a depth of 610 

 fathoms; the lowest temperature recorded is 1-1° Northern Stromfjord, West 

 Greenland, but it is also recorded from places with the temperature considerably 

 above zero, for example 5-3°. 



Arcturus beringanus Benedict. 



1898. Arcturus beringanus Benedict, Proc. Biol. Soc. Washington, 12, pp. 



46-47. 



1899. Arcturus beringanus Richardson, Proc. U. S. Nat. Mus., 21, p. 854. 



1899. Arcturus beringanus Richardson, Ann. Mag. Nat. Hist., (7), 14, p. 275. 



1900. Arcturus beringanus Richardson, American Naturalist, 34, p. 229. 

 '1905. Arcturus beringanus Richardson, Bull. 54, p. 328. 



Range: Bristol bay to Unimak pass. 



Localities recorded: Cat. No. 20528, U. S. N. M., U. S. B. F. Station 3252 

 between Bristol bay and Pribiloff island, fathoms. Albatross coll., 200 plus 

 specimens, type ma-erial ; Cat. No. 22664, 100 plus specimens from the same 

 station; Cat. No. 25136, 25 plus specimens from the same station; Cat. No. 

 39261, U. S. B. F. Station 3253, between Bristol bay and Pribilof island, 36 

 fathoms, Albatross coll., 7 specimens; Cat. No. 21255, 5 specimens from the same 

 station; Cat. No. 21256, U. S. B. F. Sta. 3637, Zapadnie bay, St. George island, 

 Bering sea, 32 fathoms. Albatross, 1 specimen; Cat. No. 22665, U. S. B. F. Sta. 

 3280, off Khondoubine island. Alaska, lat. 56°, 27', long. 162° 08^ 36 fathoms, 

 Albatross coll., 2 specimens; Cat. No. 22606, U. S. B. F. Sta. 3546, off Akutan 

 island, Alaska, 36 fathoms. Albatross, 4 specimens; Cat. No. 22663, U. S. B. F. 

 Station 2842, off North head, Akutan island, Alaska, 72 fathomrs, 1 mutilated 

 specimen; Cat. No. 28560, 1 specimen from the same station; Cat. No. 22662, 

 U. S. B. F. Sta. 2841, off North head, Akutan island, Alaska, 36 fathoms, 1 

 specimen; Cat. No. 25137, U. S. B. F. Station 3254, north of Unimak island, _ 

 Alaska, 46 fathoms. Albatross, coll., 1 specimen; Cat. No. 25138, U. S. B. F. 

 Station 3222, Unimak pass, Alaska, 50 fathoms, 1 specimen. 



Genus Pleuroprion zur Strassen. 

 Pleuroprion murdochi (Benedict). 



1898. Arcturus murdochi Benedict, Proc. Biol. Soc. Washington, 12, pp. 49-50' 



1899. Arcturus murdochi Richardson, Proc. U. S. Nat. Mus., 21, p. 855. 



1899. Arcturus murdochi Richardson, Ann. Mag. Nat. Hist. 7, 4, p. 277. 



1900. Arcturus murdochi Richardson, American Naturalist, 34, p. 230. 

 1905. Arcturus murdochi Richardson, Bull. 54, U. S. Nat. Mus., p. 342. 



Range: So far this species has only been recorded from the type locality. 



Locality recorded: Cat. No. 7915, U. S. N. M., 10 miles west of Point 

 Franklin, Alaska, (approximately lat. 70° 40^ N., long. 169° 20^ W.,) in 13^ 

 fathoms, August 31, 1883, 2 specimens, cotypes, collected by the Point Barrow 

 Expedition. 



Pleuroprion frigidum Hansen. 



1901. Arcturus hystrix A. Ohlin, Bihang K. Sv. Vet. Akad. Handl. Vol. 26, 



PL IV. No. 12, p. 30, figs. 6a-6r. (Not A. hystrix G. O. Sars). 

 1916. Pleuroprion frigidim Hansen, Danish Ingolf Exped. Crust. Malacost., 

 Vol. 3, pt. 5, p. 196, pi. XV, figs. 7a-7b. 



