370 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



h. Lips plicate ; dorsal fin anteriorly twisted over to the bUnd 



side Plexjronichthys. 



hli. Lips simple ; dorsal fin anteriorly on the dorsal ridge. 



Hypsopsetta. 

 gg. Teeth blunt, usually compressed, in one scries, forming a cutting 

 edge. 

 i. Body dextral. 

 j. Lateral line with a rcciirreut dorsal branch. 



k. Lateral line nearly straight; scales cycloid, those on 



the cheeks similar PAHOrnRYS. 



Jck. Lateral line arched in iront ; scales ctenoid ; those on 

 the cheeks stellate or tuberculate. 



Lepidopsetta. 

 jj. Lateral Hue simple. 



I. Lateral line arched in Iront; scales ctenoid . .Limanda. 



II. Lateral line nearly straight. 

 m. Dorsal rays less than 80. 



n. Scales ctenoid, closely imbricated. 



PSEUDOPLE UKONECTES. 



im. Scales small, smooth or rough, scarcely imbri- 

 cated Pleuronectes. 



vim. Dorsal rays more than 100 ; body elongate ; scales 



smooth Glyptocephalus. 



ii. Body sinistra], covered with scattered stellated tubercles; 



lateral lino nearly straight PlatichthyS. 



** Pectoral fins wanting (in our species); mouth twisted toward the colored side. 



(SOLEIDJC.) 



0. Vertical fins free from the roimded caudal; body 

 dextral ; veutral of the colored side con- 

 tinuous A^ith the anal. (Soleina\) 

 p. Scales very rough; lateral line straight; teeth 

 villiibrm, on blind side only AcHiRUS. 



00. Vertical fins confluent around the pointed tail; 

 body sinistral; vontrals fi-ee from the anaJ. 

 (PlagimiH<r.) 

 q. No lateral line ; teeth minute, on blind sid* 

 only ; ventral fin of blind side only present; 

 lips not fringed; snout not hooked; scales 

 ctenoid Aphoristia. 



15. Pseudorhombus ocellaris (DeKay) Lyman. — Floundct: 



(CfuBitopsctta ocellans Gill, 1. c) 



Very common. 



16. Pseudorhombus dentatus (L.) Jor. &. Gilb. 

 Tolerably abnndant (Cones and Yarrow). 



17. Pseudorhombus quadrocellatus (Gill) Jor. & Gilb. 



Brownisli olive, with foiu^ large ocellated spots, round or olliptical in 

 shape ; the first above the arch of the lateral line ; the three posterior 

 lorming an isosceles triangle ; the posterior one in the apex on the lateral 

 line ; body oval, compressed and much elevated, highest at middle of 

 body; profile witli an abrupt angle at anterior margin of orbit: lower 



