PLEURONECTIN^ 



I. PLEURONECTES PALLASII, Steindachner. 

 PUuronectes pallasii, Steindachner, 1880, SitzBer. Akad. Wiss. Wien, Ixxx (i), (1879}, p. 163, pi. ii, 



Pleuronectes quadrituberculatui 

 Jordan and Gilbert, 1883 

 Bull. U.S. Nat. Mus., xlvi 

 N. Pacif.,{3),p. 491 ; Sch 

 1906, Proc. U.S. Nat. M 



[non Pallas), Bean, 1882, Proc. U.S. Nat. Mus., iv, (1881), p. 241 ; 



Bull. U.S. Nat. Mus., xvi, p. 836; Jordan and Evermann, 1898, 



(3), p. 2648 ; Jordan and Gilbert, 1S99, Fur seals and fur-seal Is. 



idt, 1904, Pise. Mar. Orient., p. 239, figs. 17, 18 ; Jordan and Starks, 



xx.\i, p. 216 ; Evermann and Goldsborough, 1907, Bull. U.S. Bur. 



Fish., xxvi, (1906), p. 355, fig. 140 ; Soldatov and Lindberg, 1930, Bull. Pac. Sci. Fish. Inst., 



V, p. 406. 



PlaUssa quadrituberculata, Jordan and Goss, 1889, Rep. U.S. Com. Fish., xiv, (1886), p. 292 ; Jordan, 



Tanaka and Snyder, 1913, J. Coll. Sci. Tokyo, xxxiii (i), p. 329. 



Fig. 256. — Pleuronectes pallasii. B.M. (N.H.) 96.7.23.238. X f. p., lower pharyngeals. 



Depth of body i| to twice in the length, length of head about 3J. Upper profile 

 of head distinctly concave. Snout as long as or shorter than eye, diameter of which 

 is 4f to 5J in length of head ; lower eye a little in advance of upper ; interorbital 

 ridge low, narrow, with a few embedded scales posteriorly ; behind the eyes a row 

 of 5 high, regular, conical (lower and obtusely rounded in young) bony prominences, 

 the first just behind upper eye, clcsely followed by the second, the last just in front 

 of upper angle of gill-opening. .Maxillary extending to below anterior edge or anterior 

 part of eye, length on ocular side a little more than 4, on blind side 3! to 3I in that 



0-3 + 12-19 

 of head ; lower jaw scarcely projecting, about 3 in head. Dental formula —^ — . _ . 



7 gill-rakers on lower part of anterior arch ; lower pharyngeals slender, not much 

 appro-ximated anteriorly, width nearly 5 in length, their inner edges more or less 

 evenly curved ; each with 2 widely separated rows of obtusely pointed, somewhat 

 compressed teeth, those of the inner row larger than those of the outer ; one or two 

 small teeth between the two rows. Scales all cycloid ; about 100 in a longitudinal 

 series above lateral line ; 80 pores in lateral line. Dorsal (63) 68-72 ; origin above 

 middle of eye ; middle rays sometimes with a series of embedded scales on ocular 

 side ; highest rays about J length of head. Anal {48) 50-53. Pectoral of ocular 

 side with 11 rays {5 branched), length 2| to 2f in that of head. Pelvics with 6 rays. 



