234 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [10] 



ff. Teeth conical, separated, not incisor-like ; scales closely imbricated, 

 all strongly ctenoid ; month comparatively large (approach- 

 ing that of Psettichthys) ; vertebrae (isolepis) 10 -f- 32 = 



42 Isopsetta, 3G. 



ce. Lateral line with a distinct arch in front; scales imbricated, rough- 

 ctenoid; vertebrae (bilineata) 11 -f 29 = 40.Lepidopsetta, 31. 

 dd. Lateral line without accessory dorsal branch. 



h. Lateral line with a distinct arch in front ; scales imbricated, 



rough-ctenoid ; vertebras (limanda) 40 Limaxda, 32. 



Via. Lateral line without distinct arch in front. 



i. Scales regularly imbricate, all (on eyed side) ctenoid in both 

 sexes ; no stellate tubercles on head nor on bases of dorsal and 

 anal fins ; teeth, incisor-like, close-set ; lower pharyngeals very 

 narrow, each with two rows of separate, conical teeth ; fin rays 



scaly Pseudopleuronectes, 33. 



ii. Scales imperfectly imbricated, or else not all ctenoid. 

 j. Scales chiefly cycloid in both sexes ; lower pharyngeals small 

 and narrow, separate, each with 1 to 4 rows of small, bluntish 



teeth Platessa, 34. 



ij. Scales rough-ctenoid in the male, more or less cycloid in the 

 female (fin rays scaly in the male, naked in the female) ; lower 

 pharyngeals very large, more or less united in the adult, their 

 surface somewhat concave, the teeth in five or six rows, large, 

 blunt, close-set ; teeth in jaws incisor-like ; fin-rays of dorsal, 



and anal without tubercles at base Liopsetta, 35. 



jjj. Scales all in both sexes and on both sides of the body repre- 

 sented by coarse scattered stellate tubercles ; similar tubercles 

 between bases of dorsal and anal rays ; lateral line without 

 scales ; lower pharyngeals broad, each with three rows of blunt, 



coarse teeth; teeth incisor-like Platichthys, 36. 



aa. Vertebra? in increased number (varying from 13 + 35 = 48 to 13 + 52=65); dorsal 

 rays 90 to 120; anal rays 70 to 100; teeth broad, incisor-like; 

 scales small, all cycloid. (Genera allied to Glyptocephalus). 

 k. Left side of skull normal ; anal spine obsolete; vertebras 48 to 



52 Microstomia, 37. 



kk. Left side of skull, with large mucous cavities; anal spine 

 strong ; vertebras 58 to 65 Glyptoceph altjs, 38. 



Subfamily V.-SOLEINJE, 



(Soles with the eyes on the'right side, and separated hy a bony ridge.) 



Body oblong or elongate, with the eyes and color on the right side; 

 eyes moderate or small, separated by a distinct bouy ridge, the upper eye 

 usually more or less in advance of the lower ; mouth small, more or less 

 twisted towardsthe blind side; teeth little developed, in villiform bauds ; 

 edge of preopercle aduate, usually concealed by the scales ; gill open- 

 ings more or less narrowed, the gill membranes aduate to the shoulder- 

 girdle above ; blind side of head usually with fringes; pectoral fins 

 small, sometimes wanting; ventral fins developed, one or both of them 

 sometimes obsolete; scales usually ctenoid, rarely wanting; lateral line 

 straight, usually single. 



