836 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 



scales at base of dorsal and anal rays and on sides of head 5 similar 

 but smaller scales scattered over the body. Lateral line smooth. Fins 

 without scales ; a cluster of bony prominences above opercle. Teeth 

 incisor-like, truncate, rather broad, §^. Lower pharyngeals broad, 

 with coarse, paved teeth. Head 3| ; depth 2. D. 58 ; A. 42. L. 30 

 inches. San Luis Obispo to Kamschatka; very abundant northward; 

 one of the largest and most important of the flounders of the Pacific 

 coast. 



(Pallas, Nov. Act. Petropol. 1, 347: Platichthys rngosus Girard, U. S. Pac. R. R. Stirv. 

 Fisli. 148; Glintber, iv, 443: PlaticMhys stellatus Lockiugton, Proc. U. S. Nat. Mus. 

 1879, 91.) 



ff. Eyes and color strictly on the right side. 



g. (Scales not imbricated, usually ctenoid in the male, cycloid in the female ; lower 

 pharyngeals broad, with paved teeth. {Pleuronectes.) 



12§9. P. quadritubercMlatMS Pallas. 



Grayish, mottled with paler and with round black spots; fins very 

 dark. Form of P. glaher. Mouth very small, with small, incisor-like 

 teeth, rounded at tip. Eyes separated by a narrow ridge; about five 

 small, prominent, conical, obtuse bony tubercles in a row above the op- 

 ercle, continuous with the direction of the lateral line, which is straight, 

 without accessory dorsal branch ; tubercle above opercle largest. Scales 

 small, cycloid in all specimens examined. Anal spine present. Head 

 31; depth 2. D. 68; A. 50; Lat. 1. 78. Coasts of Alaska and iKam- 

 tschatka. 



(Pallas, Zoogr. Ross.-Asiat. iii, 423, 1811: Farophrys qvadritiiberculatus Giinther, iv, 

 4r)6 ; Bean, Proc. U. S. Nat. Mus. 1881, 241 : Pleuronectes liallasi Steindachner, Ichth. 

 Beitriige, viii, 45, 1879.) 



1290. P. glal>er (Storer) Gill. 



Grayish brown, mottled with darker brown ; fins with blackish spots. 

 Body oblong, ovate. Eyes rather small, separated by a naked elevated 

 ridge. Jaws sometimes each with two distinct rows of teeth; the inter- 

 rupted outer series of truncate, close-set, thickish incisor-like teeth, 

 which are sometimes movable; the inner row of similar teeth more 

 widely set and rather distant from the outer row (and often or generally 

 wanting); about 20 teeth in outer row in lower jaw; right side of both 

 jaws toothless; interorbital ridge continuous with a broad, naked, 

 smoothish, tuberculose ridge, which joins the lateral line. Scales small, 

 distant, non-imbricate, smooth in the female and more or less ctenoid in 

 the male; those on blind side smaller. Fins moderate, somewhat scaly; 

 anterior rays of dorsal low; pectoral a little more than half head; bases 

 of vertical fins not tuberculate. Anal spine present. Lower pharyngeals 



