PLEURONECTIN^ 



P- 405, 

 Berg, I 

 Explor. 

 Stat., ii 

 PleuTonectes 

 Pleuronectes 



2. LIOPSETTA GLACIALIS (Pallas). 



[Arctic Flounder.] 



glacialis, Pallas, 1776, Reise Russ., iii, p. 706 ; Schneider, 1801, in Bloch, Syst. Ichtli., 

 Pallas, 1814, Zoographia, iii, p. 424 ; De Kav, 1842, N. H. New York, (Fish.), p. 302 ; 

 882. Proc. U.S. Nat. Mus., iv, (1881), p. 241 ;' Jordan and Gilbert, 1883, Bull. U.S. Nat. 

 vi, p. 837 ; Jordan, 1884, Nat. Hist. Aquat. Anim. (Fisheries Fish. Indust. U.S., i), p. 

 xlvii; Lilljeborg, 1891, Sverig. Norg. Fiskar, ii, p. 410; Smitt, 1893, Scand. Fish., i, 

 figs. 110, III ; Gratsianov, 1904, Zap. Russ. Georg. Obsc. St. Petersb., xli (i), p. 227 ; 

 916. Poiss. eaux douces Russ., p. 470, fig. 354 ; Knipovich, 1926, Trans. Inst. Sci. 

 North, xxvii, p. 144, fig. no ; Lindberg and Dulkeit, 1929, Bull. Pac. Sci. Fish. Res. 

 i{i). p. 51. 



cicatricosus , Pallas, 1814, Zoographia, iii, p. 424. 

 (Rhombus) glacialis, Richardson, 1836, Faun. Bor. Amer., Iii, Fish., p. 258. 



lower pharyngeals. 



Plaiessa glacialis, Richardson, 1852, Zool. Voy. " Herald ", Fish., p. 166, pi. xxxii, fig. 4. 



Platessa dw[v]inensis, Lilljeborg, 1851, Ofvers. K. Vet. Ac. Forh., vii (i), {1850), p. 5; Lilljeborg, 



1852, Vet. Akad. Handl., Ixxi, (1850), p. 306, pi. xx, figs. 1, 2 ; Nilsson, 1855, Skand. Faun., ed. 



2, Fiskar, p. 617 ; Malmgren, 1864, Arch. Naturgesch., xxx (i), p. 295. 

 Pleuronectes franklinii, Giinther, 1862, Cat. Fish., iv, p. 442 ; Bean, 1882, Proc. U.S. Nat. Mus., iv 



(1881), p. 241. 

 Pleuronectes dvinensis, Mela, 1882, Vertebr. Fennica, p. 307. 



Liopsetta dvinensis. Jordan and Goss, 1889, Rep. U.S. Com, Fish., xiv, {1886), p. 294. 

 Liopsetta glacialis, Jordan and Goss, 1889, torn, cit., p. 294, pi. vii, fig. 17 ; Jordan and Evermann, 



1898, Bull. U.S. Nat. Mus., xlvii (3), p. 2649, pi. ccclxxx, fig. 935 ; Evermann and Goldsborough, 



1907, Bull. U.S. Bur. Fjsh., xxvi, (1906), p. 356, fig. 141 ; Gilbert and Burke, 1912, Bull. U.S. 



Bur. Fish., xxx, (1910), p. 96 ; Hubbs, 1915, Proc. U.S. Nat. Mus., xlviii, p. 487 ; Soldatov and 



Lindberg, 1930, Bull. Pac. Sci. Fish. Inst., v, p. 407, fig. 61. 



Depth of body if to 2^ in the length, length of head 3^ to 3*. Upper profile of 

 head more or less concave. Snout about as long as eye, diameter of which is 5§ to 7 

 in length of head and more than 4 times width of interorbital ridge, which is naked or 

 occasionally with 2 or 3 scales ; lower eye a Uttle in advance of upper ; postocular 



