PARALICHTHIN^ 



131 



separated from edge of head. Maxillary extending to below middle of eye or not 

 quite as far. length 2 1 to 25 in that of head ; lower jaw about twice in head. Some of 

 the anterior teeth in the outer series of upper jaw forming fairly strong canines. 

 8 gill-rakers on lower part of anterior arch. 50-56 scales in lateral line ; supple- 

 mentary scales numerous. Dorsal 82-91. Anal 65-70. Pectoral of ocular side with 

 II rays, the upper rays prolonged and filamentous (at least in the male). Caudal 

 double-truncate. Uniformly brownish, or dotted and mottled with darker ; median 

 fins generally mottled with dark brown ; pectoral with obscure and irregular cross- 

 bars ; blind side of body sometimes wholly or partly dusky. 



Type. — Not traced. 



Distribution. — Atlantic coast of America from South Carohna to Rio de Janeiro. 



Specimens Examined : 



Pleiironectes papillosus , Linnaeus, and P. aramaca, Walbaum, were based on the 

 " Aramaca " of Marcgrave (1648, 'Hist. Brasil.', p. 181, fig. I, which, judging from the 

 brief descnption and crude figure, appears to be this species. The specimens from Rio 

 de Janeiro included in the above description agree closely with the figure of Rhombus 

 soletzjormis, Agassiz, except that that species is depicted as havmg a dark blotch on 

 the shoulder. The otherwise uniform coloration and the wide interorbital space 

 shown in the figure suggest that Agassiz could not have had an example of Syaciiim 

 micrurum before him when describing his Rhombus soUceformis, although a diffuse 

 dark blotch on the anterior part of the lateral line is sometimes found in that species. 



2. SYACIUM GUNTERI, Ginsburg. 



Syacium gunteri, Ginsburg, 1933, Proc. U.S. Nat. Mus., Ixxxii (20), p. 7. 

 Syacium longleyi, Norman, 1933, Ann. Mag. Nat. Hist., (10) xii, p. 201. 



unten. B.M. (X.H.) 1931 . 1 1 .5 . 23. X |. 



