28d Canadian Arctic Expedition, 1913-18. 



Synidotea muricata (Harford). 



1877. Idotea muricata Harford, Proc. Cal. Acad. ScL, 7, pt. 1, p. 117. 



1897. Synidotea muricata Benedict, Proc. Cal. Acad. Nat. Sci. Phila., p. 400. 



1899. Synidotea muricata Richardson, Proc. U. S. Nat. Mus. 21, p. 849 



1899. Synidotea muricata Richardson, Ann. Mag. Nat. Hist., series 7, vol. 4, 



p. 269. 



1900. Synidotea muricata Richardson, American Naturalist, 34, p. 228. 

 1905. Synidotea muricata Richardson, Bull. 54, U. S. Nat. Mus., p. 390.' 



Range: Icy cape to northern California. 



Localities recorded: Icy cape, lat. 70° 15' N., long. 162° 55' W., 25 fathoms, 

 type locality; also lat. 41° 03' N., long. 154° 15' W., Pacific ocean, off northern 

 California, Lt. Geo. M. Stoney, U.S.N. , collector, 7 specimens. Cat. No. 21265, 

 U. S. N. M. 



Synidotea picta Benedict. 



1897. Synidotea picta Benedict, Proc. Acad. Nat. Sci. Phila., pp. 401-402. 



1899. Synidatea picta Richardson, Proc. U. S. Nat. Mus. 21, p. 849. 



1899. Synidotea picta Richardson, Ann. Mag. Nat. Hist., ser. 7, vol. 4, p. 269. 



1900. Synidotea picta Richardson, American Naturalist, 34, p. 228. 

 1905. Synidotea picta Richardson, Bull. 54, U. S. Nat. Mus., p. 391. 



Range: Alaska: Cape Lisburne to the Shumagin islands. 



Localities recorded: Cat. No. 13325, Cape Lisburne, Alaska, approximately 

 lat. 68° 50' N., long. 166° 05' W., 5-7 fathoms, W. H. Dall, collector, 1880, 

 3 specimens; Cat. No. 1331 1, mouth of port Clarence, Bering strait, 7-12 fathoms, 

 sandy, 1874, W. H. Dall, collector, 3 specimens; Cat. No. 21360, Norton sound, 

 Alaska, 3 specimens; Cat. No. 20502, U. S. Bureau of Fisheries Station 3600, 

 Aleutian islands, off Unimak island, 9 fathoms. Albatross, collector, 7 specimens, 

 cotypes; Cat. No. 22659, anchorage, Big Koniushi island, Shumagins, Alaska, 

 6-20 fathoms, sand, rocks, W. H. Dall, collector, 1 specimen. 



Family ARCTURIDAE. 

 Genus Arcturus Latreille. 

 Arcturus baffini Sabine. 



1824. Idotea baffini Sabine, Suppl. to App. to Capt. Parry's Voyage, p. 228, 



pi. 1, figs. 4-6. 

 1829. Arcturus tuberculatus Latreille in Cuvier, R^gne Animal, 2nd ed., IV, 



p. 139. 

 1836. Arcturus baffini Westwood, Trans. Entom. Soc, London, I, p. 72. 

 1840. Arcturus baffini Milne Edwards, Hist. Nat. Crust., Ill, p. 123, pi. xxxi, 



fig. 1. 



1885. Arcturus baffini G. 0. Sars, Den Norske Nordhavs Expedition, Zool., 



Crust., I, p. 97, pi. ix, figs. 1-21. 



1886. Arcturus baffini Bbddard, Report on the Scientific Results of the Explor- 



ing Voyage of H.M.S. Challenger, Zool., XVII, pi. xx, fig. 12. 

 1887-88. Arcturus baffini Hansfn, Vid. Medd. Naturh. Foren. i Kidbh., pp. 



188-189. 

 1895. Arcmrus baffini Axel Ohlin, Akademisk Afhandling, XXII, pp. 15-18. 

 1898. Arcturus baffini Benedict, Proc. Biol. Soc. Washington, XII, p.43. 



1900. Arcturus baffini Richardson, American Naturalist, XXXIV, p. 230. 



1901. Arcturus baffini Richardson, Proc. U. S. Nat. Mus., XXIII, p. 549. 

 1901. Arcturus baffini Ortmann, Proc. Phila. Acad. Nat. Sci., pp. 156-157. 



