290 FLATFISHES (HETEROSOMATA) 



Htf>po^losstts hippoiiloswiiies, Lilljeborg, iSgi, Sverig. Norg. Fiskar, ii, p. 21)3 ; Sat'imintlssoii. 191 \, 

 Vidensk. Medd. naturh. Foren. Kjob., Ixv, p. 28 ; Saemundsson, 1927, Rit. Visind. Isl.. ii, p. U- 



Keinhardtiiifi (Platysomatichtliys) hippuglossoides, Jensen, 1925, Medd. Koniiu. Havuiidersog. Kjoli., 

 Ser. Fisk.. vii'(7). p. 10. 



Hippni^lnssus {f*l<it\snmutichthys] hippogloasnides, Jensen, 1904, Medd. (ironland, xxix. p. zyi. 



Eggs, I.arv.k ,\Nr. VruiNi.. 

 (ri IVleisi'u, 1S94. Kt-p. Danisli Uiol. Stat., iv, (1893), p. J30, pi. ii, lig. 21 ; Schmidt, 1904, Medd. 

 Koinin. Havimdersog. Kjob., Ser. Fisk., i (3), p. 8, pi. i, figs. 1-3 ; Ehrenbaum, igo."), in Brandt 

 and Apstein, Nordisches Plankton, I. Eier Larv, Fiseh. (I), p. 181, fig. 73 ; Koefoed, 1909, 

 Crois. Ocean. .Mer. (Ironlund 19115. Poiss., p. 17, fig. 9. 



Depth of body -if to 3 J in tlio length, length of head 3I to nearly .) Snout longer 

 than eye, diameter of which is yj to 8J in length of head and equal to or (usnally) less 

 than interorbital width ; anterior margins of eyes about level, the upper entering 

 dorsal profile of head and with an entirely vertical range. Maxillary extending to 

 below posterior part of eye or beyond, length i\ to 2J in that of head : lower jaw 

 strongly projecting, nearly twice in head. 10 to 12 gill-rakers on lower part of anterior 

 arch. About no pores in lateral line. Dorsal (92) 94-102. Anal 71-76. I'ectoral 

 of ocular side with 13 to 15 rays, length 2J to 2i in that of head. Caudal with 15 

 branched rays, emarginate or lunate ; caudal peduncle as deep as long or a little 

 longer than deep. More or less uniformly blackish or brownish on both sides, the 

 blind side a little paler ; blind side white in the young.' 



Type. — Not traced. 



Distribution. — Arctic parts of the ."Atlantic, southwarils to the Grand lianks olt 

 Newfoundland and the British Isles'- ; in deep water 



Specimens Examined : 



2 (420, 530 mm.). Off Siglu Fjord, N. Iceland. Ege. 



I (490 mm.).' 12 miles off Siglu Fjord, \. Icckiml. Schmidt 



(" Dana " Coll.). 



9 (470-580 mm.). N. Iceland. Birdarson. 



I (700 mm.), stuffed. Greenland. — 



One of the types of Hippi:- 

 f;lossus groenlatuiicus- 



I (720 mm.). S.W. of Ireland (52 ',<.' N'.), 170 fms. Tatlorsall. 



I (640 ,, ), skeleton. — Brooks. 



I {115 .. ). skull. — Kyle. 



This species is said to attain a length of a little more than 3 feet. 



2. KEINHARDTIUS MATSUUK.E. Jordan and Snyder. 



Hippoglossus groenlandtcus (lion Giinther), Ishikawa and Matsu'iira, 1897, Prel. Cat., p. 25. 



Reinhardtius matsuurae, Jordan and Snyder, 1901, J. Coll. Sci. Tokyo, xv, p. 309, pi. xvi, tigs. 7, 

 8 ; Jordan and Starks, 1906, Proc. U.S. Nat. Mus., xxxi, p. 196 ; Jordan. Tanaka and Snvder, 

 1913, J. Coll. Sci. Tokyo, xxxiii(i), p. 322 ; Soldatov and I.indbcrg, iT,n, Bull. Pac. Sci. Fish. 

 Inst., V, p. 398. 



Probably identical with the preceding species, but length of head 4^ in that ot 

 fish (without caudal). Dorsal 96. Anal 69. 117 scales in lateral line. 

 Type. — Imperial Museum, Tokyo. 

 Distribution. — Misaki, Japan. 

 Known only from the type, a stuffed specimen about i^ feet in total length. 



' The pelagic larval form is pigmented on both sides, although the coloration is darker on the 

 riglit side. After passing into the bottom stage the pigment of the blind side gradually disappears 

 and this becomes entirely white to the naked eye. Later, pigment is again developed on the blind 

 side [Jensen]. 



^ Probably extending southwards normally to about 70' N. on the eastern side of the Atlantic. 



' Reversed example. 



