Storefs Synopsis of the Fishes of North Jlmerica. 227 



GENUS III. PLEURONECTES, Dekay. (RHOMBUS, Cuv.) 

 With the jaws and pharynx of Hippoglossus, they have some close or even 

 teeth, or pectiniforra ; but their dorsal advances towards the edge of the 

 upper jaw, and extends, as well as the anal, very nearly to the caudal. The 

 majority have the eyes to the left. 



1. Pluuronectes argus, Bloch. 



Oblong. Of a pale brown color, with scattered blue, half-ocellate spots. Tail lunate. 



D. 85. P. 1G. V. 6. A. 79. C. 17. Length, 10 inches. 



Precise locality not mentioned by Catesbv. 



Pleuronectes argus, Bloch, IS. 



" " Lin., Syst. Nat, Gmel., p. 1239. 



Solealunata et punctata, Sole, Catssby's Hist. Carol., n. p. 27. 

 Pleuronectes argus, Argus Flounder, Shaw's Gen. Zool., iv. pp. 319, 320, fig. 45. 

 Pleuronectes argus el lunulatus, Turton'S LlNKSUS, I. pp. 767, 7bo. 

 Rbombus argus, Griffith's Cuv., x. p. 497. 



2. Pleuronectes maculatus, Mitchill. 



Orbicular. Body and fins pellucid, with numerous black spots. The anterior rays of the 

 dorsal with membranous slips. Chin with a slight protuberance. Lateral line arched above 

 the pectorals. 



D. 68. P. 12. V. 6. A. 56. C. 15|. Length, 12 to 18 inches. 



Massachusetts, Storer. New York, Mitchill, Dekay. 



Pleuronectes maculatus, New York Plaice, Mitchill, Report in part, p. 9. 



Pleuronectes aquosus, Plaice of New York, Mitchill, Trans. Lit. and Phil. Soc. of New York, i. p. 3S9. 



pi, 2, fig. 3. 

 Pleuronectes maculatus, Spotted Turbot, Dekat's Report, p. 301, pi. 47, fig. 151. 



3. Pleuronectes glacialis, Pallas. 



Ovate. Color a mixture of yellowish-gray and dull greenish-gray, somewhat clouded, but 

 without defined spots ; belly bluish white ; caudal fin irregularly spotted with red. Caudal 

 cuneiform, entire- Scales small, rough on left side of the body. Lateral line straight. 



D. (?). P. (?). V. (?). A. (?). C. 0). Length, (r). 



Arctic Sea, Richardson. 



Pleuronectes (Rbombus) glacialis (Pallas), Arctic Turbol, Rich., Fauna Boreal. Amcric, m. p. 25S. 

 Pleuronectes glacialis, Dekay's Report, p. 302. 



GENUS IV. ACHIRUS, Lacepede. 

 Destitute of pectoral fins. Both eyes and color on the right side. Mouth 

 distorted to the side opposite the eyes. Dorsal and anal extend to the tail, 

 but are not united with it. 



