4b Canadian Arctic Expedition, 1913-18 



where it was taken by this expedition as far east as Bernard harbour, Northwest 

 Territories. 



Strange to say, the large Neomysis> Mysis rayi (Mutdoch)^ was not 

 obtained, though considerable collecting was undertaken near point Barrow, 

 the type locality. Other than those mentioned above there are only two 

 schizopods which have been reported from near the region covered by the 

 expedition, but not taken by it: Gnathophausia gigas Willemoes-Suhm^ and 

 Thysanoessa spinifera Holmes', both from the southern Bering sea, off the coast 

 of Alaska, latitudes 53° 56' 50" N. and 57° 40' N., respectively. 



The former is a species ranging as far south as the Hawaiian islands in the 

 Pacific and the Azores in the Atlantic, but in the Atlantic not known to occur 

 north of the 50th parallel''; the latter is strictly a Pacific form, which ranges 

 southward along the West American coast nearly to the southern end of Cali- 

 fornia.' 



Of course the commoner arctic forms, such as Michtheimysis jnixta (Lillej- 

 borg)^ and Thysanoessa negleda^ a,nd longicaudata (Krc^yer)' are to be expected 

 in this region, as well as almost any of the thirty-odd species occurring in the 

 Atlantic Arctic or subarctic ocean, a list too long to introduce here. Reference 

 is suggested to: Zimmer, Fauna Arctica, III (Die arktischen Schizopoden), 

 1904, and Nordisches Plankton, VI (Schizopoden), 1909, in which all these 

 species are illustrated and fully keyed out; and Hansen Danish Ingolf Expe- 

 dition, III (Crustacea Malacostraca I), 1908, and Proc. U.S. Nat. Mus., 

 48 (The Crustacea Euphausiacea of the U.S. Nat. Mus.), 1915. 



In the following list of the species, and the stations at which they were taken 

 reference has been made, in the case of the Mysids, to a plate and description 

 of the species, and in the case of the Euphausids, to the latest review of the 

 group. The drawings were made from balsam mounts by means of the Edinger 

 drawing apparatus. All of the species, except one of Mysis oculata, so indicated, 

 were collected by Mr. Frits Johansen, naturalist of the expedition. 



MYSIDACEA 

 Mysis oculata (Fabr.) 



G. O. Sars, Mon Norgcs Mj-sider, III, 69, pi. XXXI, 1879 



Station 27 n: Collinson point, Alaska, September 20, 191)1 



Pelagic, over about 1 foot of water; 8 inches ice. 

 4 juv. Taken in company with Thysanoessa raschii. 



Station 27 q: Collinson Point, Alaska, September 26, 1913. 

 Pelagic, over about 1 fathom of water. 



1 juv. 



Station 27 s: Collinson point, Alaska, October 3, 1913. 



Depth about 3 fathoms; sandy mud with stones and algse. 



2 juv. 



Station 27 y^: Lagoon at Collinson point, Alaska, October 8, 1913. 

 Pelagic, over 2 feet of water. 

 2 (fragmentary, sex ?) and 6 juv. Taken in company with Thy- 

 sanoessa raschii. 



' Murdoch, Proc. U. S. Nat. Mus., 7, 519, 1884. 

 2 Ortmaim, Proc. U. S. Nat. Mus., 31, 38, 1906. 

 = Hansen, Proc. U. S. Nat. Mus., 48, 90, 1915. 

 * Zimmer, Nordisches Plankton, VI, 33, 1909. 

 ' Zimmer, Nordisches Plankton, VI, 163, 1909. 

 « Zimmer, Nordisches Plankton, VI, 20, 1909. 

 ' Hansen, Proc. U. S. Nat. Mus., 48, 97-100, 1915. 



