i:.i 



Pkurotuctei us, \ilss. Prodr. [ohth. Spand.. p, 55 fl 832). 



'"''/ phabu saxicola, Gottsche, Wiegm, 4.roh. l'. Naturg. 1835, I B.,> 



p. 156 - 1835). 

 Platessa pold, Jen, Man. Brit. Vertebr. Anim.. p, i> (1835). 

 Platessa elongata, Yatr. Suppl. to Brit. Pish., p. '. ; (1839); Hist. Brit. 



Fish. oil. l'. v,.l. -j. p. :;is , is 1 1 ). 

 Platessa saxicola, Kr. Danm. Fiske, '-' l>.. |>. .'.:'.s (1843 I".). 

 glyptocephalus cynoglossus, Gill, Proc. A.cad. Nat. Sci. Philad. 1873, p. 



360 (1873). 

 Glyptocephalus acadianus, Sill, Proc. A.cad. Nat Sci. Philad. 1ST 



360 -is;.; i. 

 Glyptocephalus elongates, (Jill. Proc. Acad. Nat. Sci. Philad. 1ST 



:ii>J (1873). 



.7,.s elongates, hav. Proc. Zool. Sue. Lond. 1879, p. 7"); 



LXI ("1879). 



P- 



l'- 

 PI. 



Diagn. Legemet glost; detsEøjde indéholdes hos yngre 



Individer 4. hos ældre 3 Gange (eller derunder), Bovedets 

 Længde .V , til .t 1 /. Gange i Totallwngden. Tænderue 

 paa Øjensiden 6—13 i Over-. 7—14 i Underkjceven, paa 

 Blindsiden 17—26 i Orer-, 19—28 i Underkjceven. Le- 

 g&mt skjælbeklædt indtilØjnenes Forrand; Finnerne ligeledes 

 mm- eller mindre skjælbeklædte. Interorbitalrummet smult. 

 med ophøjd Kjøl. Øjnene store, indéholdes 3 — 3 l / 2 Gange i 

 Howdets Længde; det ned ri' Øje ligger i /. i Øjenlamgde foran 

 det owe. AnaUorn tilstede. Pedoralen paa Blindsiden ikke 

 forhenget. Eusfurret mdagtig grua : Blindsiden hus de , eldre 

 mer eller mindre mørkfarvet. Pedoralen pan Øjensiden i 

 sin gdre Halvdel sort. 



M. B. 7. D. 110 (95— 120); 'A. 95 (87—102); 

 P. 10—11 (9—14); C. 23 (18—26); Y. 6. 



Localit. fra Nordh. Exped. Lofoten; Tanafjord i 

 Finmarken. 



Bemærkninger til Synonymien. Glyptocephalus cy- 

 noglossus or. som det synes, .Slægtens eneste Repræsehtant 

 i de atlantiske Have. efterat Gl. ueadiui/us, Gil], fraNord- 

 Americas Østkyst har vist sig ikke at være artsforskjellig 

 fira Gl. cynoglossus. Forst i det stille Hav (California) op- 

 træde 2 andre, i .afvigte.Aar (1880) af Lockington be- 

 skrevne Arter. 



Det yngste af Nordhavs-Expeditionens Individer, hvis 

 Totallængde var 212'""' (8 1 / 2 eng. Tomme), tilhører øjen- 

 synlig det Stadium af Arten, hvori den af engelske Natur- 

 forskere er opstillet som en egen Art under Navn af Pleu- 

 ronedes elongatus (Yarr.). Efterat denne Form, hvoraf blot 

 enkelte Individer hidtil have været omtalte, alle fra de 



PUwonectes nigromanus, Nilss. Prodr. [chth. So I., p, .V. (1832). 



Glyptocephalus saxieola, Gottsche, Wiegm. Atvli. I'. Nftturg. 1835, I li., 



p, 156 1 1835). 

 Pl.tt, , -sa pola, Jen. Man. Brit. Vertebr. Aniin.. p. 158 (1835). 

 Platessa elongata, Yarr, Suppl, to Brit. Fish., p. ? (1839); Hist. Brit. 



Fish. ed. 2, vol. 2, p. 318 (1841). 

 Platessa saxicola, Kr. Damn. Piske, 2 l'>.. p. 338 (1843 15). 

 Glyptocephalus cynoglossus, Grill, Proc. A.cad. Nat. Sri. Philad. 1873, p. 



360 i 1873). 

 Glyptocephalus acadianus, Gill, Proc. Aoa.l. Nat. Sei. Philad, 1873, p, 



360 1 1873). 

 Glyptocephalus elongatus, Gill, Proc. Lead. Nat. Soi. Philad. 1873, p. 



362 (1873). 

 Pleuronectes elongatus, Day, Proc. Zool. Soc. Lond. 1879, p. 755, Pl. 



LXI i 1879). 



Diagnosis. — "Body smooth: its depth, in young in- 

 dividuals is to total length as 1 to 4. in adults as 1 to 3 

 (or less); length of head as J to 5 r / 4 - -V ,. Teeth on 



Coloured side in the upper jaw 6 — 13. in the lower 7 — 14: 



on the blind side in the upper jaw 17 — 26, in the 

 lower 1!) — 28. Body seeded to the- anterior margin of the 

 eyes: the f us like/rise more or less covered with scales. Jnter- 

 qrbifal space narrow, with a sharp ridge: the eyes large, their 



din meter .being to the length of the head us 1 to 3 — 'l' .: the 

 lower ege about one-third of its diameter in advance of the 

 upper. I'reaual spine present. The peetorul on the blind side 

 not produced. < 'ulnar rufous brown: the blind side hi adults 

 more or less tinged ivith the same colour. Outer half of 

 peelond ou the coloured side black. 



M. B. 7. D. 110 (95—120); A. 95 (87—102); 

 P. 10—11 (9—14); 'C. 23 (18— 26): V. 6. 



Locality (North Atl. Exped.): 

 Tana Fjord (Finmark). 



— Lofoten ; the 



Remarks on the Synonymy. — Glyptocephalus cyno- 

 glossus is apparently the only species of the genus inhabit- 

 ing the Atlantic Ocean. Gl. ueudiauus. Grill, from the oast 

 coast of North America, having been shown to be Speci- 

 fically distinct from Gl. cynoglossus. Two uthor species 

 (described by Lockington in the current year [I860]) occur, 

 however, in the Pacific (coast of California). 



The youngest of the specimens taken on the Expedi- 

 tion, total length 212""" (8 1 / 2 English incites), obviously re- 

 presents the stage of development in which Gl. cynoglossus 

 has boon referred by English naturalists to a separate spe- 

 cies, under the name of Pleurdnedes elongatus (Yarr.). This 

 form, ut' which up to the present time a few specimens 



