196 PROCEEDINGS OF THE ACADEMY OP 



II. Mouth large and continued more or less under the eye. 



Ventrals inserted laterally Hippo glossing 



A. Caudal entire, or produced behind. 



st. Lateral line straight Psettichthys, 



aa.. Lateral line arched in front Paralichthys. 



AA. Caudal fin emarginated behind. 



Darsal and anal fins regularly arched Uropsetta. 



Dorsal and anal elevated towards middle Hippoglossus. 



III. Mouth large. Ventral of dark side inserted on the ridge 



of abdomen , Rhombin*. 



n. Int^rorbital area sharp Orthopsetta. 



.0. Interorbital ridge prominent, channelled Metoponops. 



Subfamily PLEURONECTIN.E Bon. 



PLEURONECTES (L.) Blkr. 



Pleoronectes Franklinii Gthr. 



Pleuronectes (Rhombus) glacialis Rich, F. B. 258. (not Pallas.) 

 Pleuronectes glacialis DeKay, N. Y. 302. 

 Platessa glacialis Rich, Herald. 

 Pleuroneces Franklinii Gthr. 

 Hab. North-western America. 



Pleoronectes quadrituberculatus Pallas. 



Pleuronectes quadrituberculata Pallas, Zool. Rop. As. iii. 423. 

 Parophrys quadrituberculata Gthr., iv. 456. 

 Hab. Sea between Kamtschatka and America. 



Pleuronectes cicatricosos Pallas. 



Pleuronectes cicatricosus Pallas, Ross. As. iii. 424. 



Hab. " Specimiaa e ru&ri inter Camtschatcam et Americam lecta mini retu- 

 iit D. D. MerkJ'r- Pall. 



PAROPHRYS Grd. 

 Parophrys vbtdla Grd. 



Parophrys vetulus Grd. 

 Pleuronectes digrammus Gthr., iv. 445. 

 Parophrys vetula Gthr., iv. 455. 

 Hab. California. 



Parophrys Hubeardii Gill. 



Parophrys Hubbardii GUI, Pa., 1862, 281. 

 Hab. San Francisco. 



LEPIDOPSETTA Gill. 



Lepidopsetta dmbrosa Gill. 



Platichthys umbrosus Grd , Pa., viii., 136, 1856. 

 Lepidopsetta umbrosa Gill, Pa., 1862, 326. 

 Pleuronectes umbrosus Gthr., iv. 454. 



Jlab. California. 



Allied and perhaps congeneric is the following species ; 



Platessa bilineata Ayres, Cal. i. 40. 

 Pleuronectes bilineatus Gthr., iv. 444. 

 Hab. San Francisco. 



[Sept. 



