113. PLEURONECTID.E PLEURONECTES. 833 



caudal tipped witli dusky; blind side white, immaculate, or with small 

 round rusty si30ts; left side of head sometimes rusty tinged. Body 

 oblong, robust; caudal peduncle rather long; snout projecting; form- 

 ing an angle with the profile; mouth oblique, the chin projecting; 

 teeth joH^, narrowly incisor-like, bluntish, in a single, rather close-set 

 series; maxillary reaching past front of orbit, 5| in head; eyes large; 

 interorbital space rather broad, scaly, continuous with a ridge above 

 oi)ercle. Head mostly covered with scales like those of the body, but 

 smaller and rougher. Gill-rakers feeble. Lower pharyngeals each 

 with two rows of coarse blunt teeth. Scales thick and firm, adherent, 

 not closely imbricated; those in front well apart; all the scales strongly 

 ctenoid; blind side with similar scales, almost as strongly ctenoid. Ver- 

 tical fins mostly scaly. Lateral line conspicuous, its scales less rough 

 than the others; a distinct short accessory lateral line on both sides, 

 extending to about the tenth dorsal ray, less than one-sixth head; aseries 

 of pores around lower eye behind. Dorsal beginning over pupil, its ante- 

 rior rays low; its highest rays nearly half length of head; caudal 

 large, double truncate; pectoral of right side about half head. Head 

 31; depth 2. D. 70 to 76; A. 52 to 57; V. 6; Lat.l. 85. L. 15 incht'S. 

 Puget Sound. 



{Parophrys ischyrm Jordan & Gilbert, Proc. U. S. Nat. Mus. 1880, 276.) 

 hh. Lateral line with a strong arch in front; scales rough. {Lepidopselta* Gill.) 

 12§4. P. bilineatus (Ayres) Gthr. 



Yellowish brown, with numerous round pale blotches. Body broadly 

 ovate, thickish; mouth moderate, turned toward the left side.; teeth 

 stout, conical, little compressed, bluntish, in one series, rather irregu- 

 larly placed. Lower pharyngeals broad, with two rows of blunt teeth. 

 Gill-rakers few, very short, thick and weak, without teeth. Snout pro- 

 jecting; eyes large, separated by a prominent ridge, which, like the 

 cheeks and upper portion of the opercle, is covered with rough stellate 

 scales; lower eye advanced; opercle, subopercle, and interopercle of 

 left side scaly; preopercle naked. Scales rather small, mostly ctenoid, 

 not closely imbricated; those on the blind side smooth; scales on the 

 cheeks and other parts of the head very rough ; scales of body smoother 

 and less closely imbricated anteriorly, the degree of roughness varia- 

 ble, northern specimens (var. umbrosus) being roughest. Lateral line 



*Gill, Proc. Acad. Nat. Sci. Phila. 1864, 195: type Platiclithys umbroHus Girard = 

 Plateasa hilineata Ayres. (/leff/SoS, scaly; ^-err a, flounder.) 



Bull. Nat. Mus. No. 16 53 



