300 Mr. P. Schmidt on the 



North Japanese and Okhotsk Seas, and afterwards 

 considered by American and Japanese authors [Jordan 

 & Starks (1906), Jordan, Tanaka, & Snyder (I 913 )] 

 to be the representative of a new genus — Cynopsetta, 

 Schmidt [this name Cynopsetta was first used by me 

 in a preliminary list (Schmidt, 1902) without descrip- 

 tion]. J. O. Snyder (1912, p. 439) has identified 

 two specimens found in Otaru as nearest to this 

 species, but " with some doubt as to whether the 

 species itself really differs from Hippoglossoides 

 elassodon." 



(5) Hippoglossoides katakurce, Snyder (1911), described 

 from Otaru (Hokkaido) from one specimen *. 



The near relationship of these five species has been gene- 

 rally acknowledged. Thus, of Hippoglossoides hamiltoni, 

 Jordan & Evermann (1898, p. 2617) write :—« Allied to 

 Hippoglossoides elassodon . . . Its relations with H. robustus 

 are much nearer, but the species are apparently distinct." 

 On the same subject I have written (Schmidt, 1904, 

 p. 227) : — " If we take into consideration that the Atlantic 

 Hippoglossoides platessoides, a species nearly allied to Hippo- 

 glossoides hamiltoni and H. elassodon, is highly variable, 

 and has, according to Smitt, D. 76-93, A. 64-73, it is 

 doubtful if the separation of H. hamiltoni from //. elassodon 

 is well grounded, inasmuch as there are very few specimens 

 for comparison. Having studied my two specimens, I 

 believe that H. hamiltoni may be perhaps regarded as a 

 synonym of H. elassodon." 



Of Hippoglossoides dubius I have written (Schmidt, 1904, 

 p. 228) in the same work : — " It is nearly allied to Hippo- 

 glossoides elassodon, J. & G., differing in the more developed 

 denies canini, in the absence of scales on the interorbital 

 space and on the snout, in the cycloid scales on the anterior 

 part of the body, in the narrower interorbital space, and 

 deeper caudal peduncle." 



Table I. gives a comparison of the principal characters of 



* Hippoglossoides herzenstemi, Schmidt (1904), was described by me 

 from the North Japanese Sea as a Hippoglossoides. But in the same 

 work 1 suggested that it might be better to consider it as the representa- 

 tive of a new genus — Trotopsetta. Now I am convinced that this suppo- 

 sition was well grounded, inasmuch as it coincides with the opinion of 

 American and Japanese ichthyologists [Jordan & Starks (1906), Jordan, 

 Tanaka, & Snyder (1913)]. 



