tSo 



FLATFISHES (HETEROSOMA lA) 



side with 1 1 or I ^ rays, length i J to if in that of head. Caudal rounded. Vertebra; 

 ID + 27-32. Brownish or greyish, sometimes with irregular darker markings : fins 

 often with small dark dots ; pelvic fin of ocular side occasionally with a black spot. 



Type — Not traced. 



Distribution. — South-western Europe, from the Cattegat and Christianiafiord to 

 the Sea of Marmora. 



Specimens Examined : 



Ci.llctt. 

 Murrav. 



Yarrell Col 

 Mar. Biol. 



Hyrne. 



Wolfenden. 



Argyll. 



Gunthcr. 



Day. 



Willi penny. 



Yarrell Coll. 



Zool. Soc. Coll. 



(130 



This is a \ery variable species, and it is probable that the examination of a large 

 series of examples would lead to the recognition of two or more distinct races or sub- 

 species,^ Apart from a slight difference in pigmentation, there are no apparent sexual 

 differences. The species has long been confused in the Mediterranean with A. 

 macrostoma, and some of the references in the above synonymy may refer to the 

 latter form. 



5. ARNOGLOSSUS M.VCROSTOMA, Kyle. 



Ital., (19), fig.; C.uiestMi 

 au, 1881, Hist. \at. Pui; 



I'lcuraufctes artUi(:lossus (? non Schneider), Bonaparte, 1837, Icon. 



1S6J, Arch. Zool. Anat. Fisiol. Genova, i, p. 14, pi. i, fig. 4 



France, in, p. 3^8- 

 Platophrys [Arnoglossus) latcrna form rnacroccphala . . . , Siiiitt, i8g3, Scand. Fish., i, p. 428. 

 Arnnglossus lalenm ittacroslfunii, Kyle, i<jl3. Rep. Danish Ocean. Exped. IQ08-1010, ii, A. 1, p. 1)4, 



hg. 2fj. 



Close to ,4. laleyiia. Depth of body I'j to 25 in the length, length of head 3^^ to 

 35. Snout rather longer than eye, diameter of which is (3J to) about 5 in length of 

 head ; eyes separated by a bony ridge, the lower a little in advance of the upper. 

 Maxillary extending to a little beyond middle of eye, length 2-1^ to 2 J in that of head ; 

 lower jaw about i J in head. Teeth somewhat larger than in A . latcrna, but not much 

 enlarged anteriorly. 7 or 8 gill-rakers on lower part of anterior arch. Scales feebly 

 ctenoid; about 50 in lateral line. Dorsal (86) 89-91. Anal 65-68 (6g). Pectoral 

 (if ocular side with 13 rays, length about 2 in that of head. Caudal rounded. Vertebra; 

 10 - 29. More or less uniformly pale brownish ; fins with traces of darker dots. 



Die; 



See Jordan and Hubbs, 191 

 L- authors may have included < 



Mu 



p. 4(- 



The material described by 



