194 PROCEEDINGS OP THE ACADEMY OF 



Reinhardt, on the Cyclopterus liparis of Fabricius as a whole. Fabricias having 

 only fully described his first variety, it appears advisable for that reason, as 

 well as on account of its precedence, to identify the name with that one. The 

 name given to the present species as a variety, by Walbaum, may, in that case. 

 be accepted as its specific appellation. 



Genus CAREPROCTUS, Kroyer. 



LiparidinvE with the oral cleft oblique, the lower jaw advanced ; teeth sim- 

 ple and hooked ; a rudimentary suctorial disk situated far forwards, under the 

 anterior part of the eye, and little distant from it the anus, far behind which 

 is the anal fin. 



Type. Liparis Reinhardi Kr.=L. gelatinosus R. 



This very distinct genus is especially distinguished from Liparis by the char- 

 acters mentioned in the generic diagnosis. We owe its establishment to Dr. 

 Kroyer, its species having been previously confounded with Liparis. There 

 are probably two species, one found in Kamtschalka, and the other, long con- 

 founded with it, a native of the Greenland waters. 



Cakeproctus Reinhardi, Kr. 



Liparis gelatinosus, Reinhardt, Oversigt over det Kongelige Danske Videnskaber- 

 nes Selskabs Forhandlingar, 1844 5, pi. x., p. lxxvii., tr. Isis von. Oken, 

 1844, p. 819. 



Liparis gelatinosus, Gill, Cat. p. 47. 



Liparis Reinhardi, Kroyer, Naturhistorisk Tidskrift, ser. 3, Bd I., p. 252. 



Careproctus Reinhardi, Kroyer, op. cit. i., p. 257. 



Synopsis of the PLEURONECTOIDS of California and North-western 



America. 



BY THEODORE GILL. 



In conformity with a promise some time since made,* I now offer a Synopsis 

 of the Pleuronectoids of California, and add descriptions of a new species, 

 which is at the same time the type of a distinct genus, contained in a collection 

 made by Dr. Cooper, of the Geological Survey of California, and kindly sub- 

 mitted to me for examination. 



One of the genera admitted Uropsetta is known to me only Ihrough the de- 

 scription and outline figure of its type published by Dr. Ayres. That species was 

 originally described as Ilippoglossus calif ornicus, but as it evidently did not be- 

 long to Hippoglossus, it was withdrawn by me from that genus, and taken as 

 the type of a peculiar one. It has since been referred to ihe genus Pseudo- 

 rhombus by Giinther, but the Californian naturalist, in approximating it to Hip- 

 poglossus, appea-s to have interpreted nature more truly than the English one. 

 Uropsctla, indeed, is apparently more closely related to Reinhardtius than to 

 any other. 



Four other species are only known through descriptions that are not suffi- 

 cient to positively decide their true affinities. One is the Platessa bilineata 

 of Ayres ;f of this the "mouth, of moderate dimensions, the tip of the upper 

 maxillary scarcely reaching the plane of the pupil of the lower eye ; " the " sin- 

 gle, even row of strong, blunt, conical teeth;" the dextral eyes; the "scales 

 larger and more conspicuous than in any other fish of this tribe yet found on 

 our coast; " and the recurrent lateral line appears to indicate that it is allied 

 to Lepidopsetta ; but the statement that " the scales of the anterior portion of the 

 body are nearly smooth : further back they become gradually more and more 



* Proc. Ac. N. S., Pbila., 1862. 

 t Ayres, Proc. Cal. Ac. i. 4o. 



[Sept. 



