830 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY — IV. 



rens, the longest rays 1| length of the head; dorsal fin beginning oppo- 

 site or slightly below the premaxillary, about five rays being on the 

 blind side. Head 4 ; depth 1^. D. 65-72 ; A. 45-48. Coast of Cali- 

 fornia; not rare. 



(Jordan & Gilbert, Proc. U. S. Nat. Mus. 1880, 49.) 



bb. luterorbital ridge witliout distinct spine. 



12'?9. P. ceenosus Girard. 



Color light broAvn, blotched with chocolate color and yellowish, some- 

 times nearly plain, but usually profusely mottled; sometimes with ocel- 

 lated blotches, sometimes with the light colors replaced by purplish red. 

 Interorbital ridge i^rominent, bu.t without spine or conspicuous tuber- 

 cles, the tubercles of the other species being represented by slight 

 deviations. Vertical fins very high, the longest rays of dorsal and 

 anal two-thirds the length of the head. A narrow baud of teeth on 

 the colored side of the lower jaw. Dorsal fin beginning on the level 

 of the premaxillary, its first five rays on the blind side; caudal longer 

 than head. Head 4|; depth If. D. 68; A. 48-50. San Diego to 

 Alaska, not generally common, but widely distributed; usually in 

 deep water. 



(Girard, Proc. Acad. Nat. Sci. Phila. 1854, 139: Paroplmjs coenosus Giinther, iv, 456.) 

 45r.— HYPSOPSKTTA Gill. 



(Gill, Proc. Acad. Nat. Sci. Phila. 1864, 195: type Pleiironichthys guttiilaUts Grd.) 



Eyes and color on the right side. Body broad, ovate, rhomboid; 

 mouth very small ; teeth slender, equal, acute, in several series; lips 

 thick, not plicate. Lateral line nearly straight, with an accessory 

 dorsal branch. Scales small, smooth. Dorsal fin beginning on the 

 dorsal ridge, not turned to the blind side; anal spine present; caudal 

 fin convex. Gill-rakers little developed, (yi/j', deep; i/'^'"«, flounder.) 



12§0. H. gultwBata (Grd.) Gill— Diamond Flounder; " Turbot." 



Brown, with numerous pale-bluish blotches in life, these disappearing 

 in spirits; blind side white, with a strong tinge of yellow along profile 

 of head ; fins plain, sometimes with black specks. Body very deep, 

 somewhat angulated near middle of back and belly; eyes moderate, 

 separated by a flattish, raised area: head without spines or tuber- 

 cles ; scales of opercular region little developed ; those of blind side 

 reduced ; no teeth on right side of either jaw. Accessory lateral line 

 long, half length of body. Anal si)ine small; pectorals about half 

 length of head; ventrals rather short; caudal peduncle much deeper 



