302 FLATFISHES (HETEROSOMAIA) 



4. HIPPOGLOSSOIDES ROBUSTUS, Gill and Townsend. 



Hipffoglossoides robustus, dill and Townsend, 1807. Proc. Biol. Soc. Washington, xi, p. ::.^vl ; T'rd.in 

 and Evcrmann, 1808, Bull. U.S. Nat. Mus., xlvii (3), p. 2616 ; Jordan and Gilbert, iKo'i, l-nr 

 seals and fur-seal islands N. Pacific, iii, p. 480 ; Hubbs, 11)15, Proc. U.S. Nat. Mus., xlviii, p.4''li. 



Hifipoglossotdes hamilloni, (Jordan and (Albert) Jordan and p;vermann, l8q8, Bull. U.S. Nat. Mus., 

 xlvii (3), p. 2616 ; Jordan and Gilbert. 1S99, Fur seals and fur-seal islands N. Pacific, iii, p. 

 48Q, pi. Ixxxiv ; Schmidt, 1904, Pise. Mar. Orient., p. 226 ; Jordan and Starks, 1900, Proc. 

 U.S. Nat. .Mus., xxxi, p. 190, fig. 9 ; Jordan, Tanaka and Snyder, 1913, J. Coll. Sci. Tokyo, 

 xxxiii (I), p. 320, fig. 269 ; Hubbs, 1915. Proc. U.S. Nat. Mus., xlviii, p. 46O. 



Hifpnilosanides elassodon robustus, Schmidt, 1915, Ann. Mag. Nat. Hist., (8) xvi, p. 308 ; Soldatov 

 .ind l.indberg, 1930, Bull. Pac. Sci. Fish. Inst., v, p. 395. 



Hifl'i.s^l-.sindcs propinquus, Hubbs, 1915, Proc. U.S. Nat. Mus., xlviii, p. 469, pi. xxvi, fig. 5. 



Hipp,>gl,<^s„ides (Cynopselta) robustus. Hubbs. 1918, Annot. Zool. Jap., ix, p. 374. 



Hippnglossoides (Cynopsella) hamilttmi, Hubbs, 191S, torn. cit.. p. 374. 



Hlppoglossoides {Cynopsellii] propiiiquic. Hubbs, 191S, torn. ri.'.. p. 374 



Depth of body (2^) 2J to 2g in the length, length of head 3J to 3.5 Snout as long 

 as or shorter than eye, diameter of which is 4^ to 5J in length of head ; anterior 

 margins of eyes about level or upper a little in advance of lower. Maxillary extending 

 to below middle of eye or a little beyond, length 2J to 2i in that of head ; lower jaw 

 distinctly projecting, 1 1 to about 2 in head ; anterior teeth in upper jaw somewhat 

 enlarged, but not forming distinct canines. 7 branchiostegal rays ; 10 to 13 gill-rakers 

 on lower part of anterior arch. Scales very variable, more or less ctenoid on ocular 

 side, ctenoid or cycloid on blind side ; 87 to 94 in lateral line, about 40 between lateral 

 line and middle of back. Lateral line with a low but distinct curve above pectoral 

 fin. Dorsal (67) 69-77 '■ origin above anterior margin or anterior part of eye. Anal 

 (51) 53-59 (60). Contours of posterior parts of dorsal and anal fins more or less 

 concave. Pectoral of ocular side with 10 or 11 rays, length ij to 2J in that of head. 

 Caudal with 18 rays (12 branched), rounded or double-truncate : caudal peduncle 

 as long as deep or a little deeper than long. More or less uniformly brownish ; fins paler. 



Type. — United States National Museum. No. 48766. 



Distribution. — From the Bering Sea southwards to northern Japan. 



Specimens Examined : 



I (no mm.). Kamchatka. U.S. Nat. Mus. 



1 (195 ,, ). Mouth of R. Oscrraja, Kamchatka. Popov. 



I (162 ,, ). Avacha Bay, Kamchatka. Berg. 



I (105 ,. ). Paralype of Japan. Stanford Univ. 



" //, prnp„HIUUS. 



