390 REPORT OF NEW JERSEY STATE MUSEUM. 



usually small. Lateral line usually present, extending on caudal, 

 sometimes duplicated or wanting. Dorsal long, continuous, of 

 soft rays only, beginning on head. Anal similar, shorter. Caudal 

 various, sometimes coalescent with dorsal and anal. Pectorals 

 inserted rather high, rarely wanting. Ventrals under pectorals, 

 usually of several soft rays, one of them sometimes wanting. 



Fishes of the sand bottoms of all seas, some ascending rivers, 

 and carnivorous. Many are important food-fishes. 



Key to the genera. 



a. BoTHiN^. Ventrals unsymmetrical, dissimilar in position and usually 

 in form, ventral of eyed side being extended along ridge of abdomen ; 

 eyes and color on left side. 

 &. Lateral line with distinct arch in front, vomer with teeth. 



LOPHOPSETTA 



hb. Lateral line without arch in front, vomer toothless. etrofus 



aa. Ventrals symmetrical, similar in position and in form of base, ventral of 

 colored side not extending along ridge of abdomen. 



c. HiPPOGLossiNiE'. Mouth nearly symmetrical, dentition nearly 

 equally developed on both sides ; gape usually, but not always, 

 wide. 



d. Body comparatively elongate ; caudal lunate ; dorsal rays lOO ; 



anal 85. hippoglossus 



dd. Body broader ; caudal double truncate or rounded ; dorsal 



rays fewer than 95 ; anal fewer than 75. paralichthys 



cc. PivEURONECTiN^. Mouth unsymmctrical, jaws on eye side with 



nearly straight outline, bones on blind side strongly curved ; 



teeth chiefly on blind side. 



e. Lateral line with a distinct arch in front ; scales imbri- 

 cated, rough ctenoid. limanda 

 ee. Lateral line without distinct arch in front, scales regularly 

 imbricated, all on eyed side ctenoid in both sexes. 



PSEUDOPEEURONECTES 



Genus Lophopsetta Gill. • 



' The Window Panes. 

 Lophopsetta maculata (Mitchill). 



Plate 85. 



Window Light. Spotted Turbot. Sole. Spotted Flounder. 



Sand Flounder. 



Head 3^; depth ij^; D. 65; A. 50; V. 6; scales 100 above 

 course of lateral line to base of caudal; mandible 2 in head; 



