Pacific Species of Hippoglossoides. 307 



IE we try now to summarize the facts given above, we shall 

 have the following scheme : — 



Genus Hippoglossoides, Gottsche, 1835. 



[=Citharus, Reinhard, 1838, =Drepanopsetta, Gill, 1861, = Pomato- 

 psetta, Gill, 1864,= Cynopsetta (Schmidt in litt.), Jordan & Starks, 

 1906.] 



I. Branchiostegal rays 8. Lateral line single, 



nearly straight. The contours of the 

 dorsal and anal fins in the posterior half 

 convex. (Atlantic Ocean.) H. platessoides, Fabr. 



II. Branchiostegal rays 7. Lateral line single, 



slightly rising anteriorly or forming a very 



low arch. The contours of the dorsal and 



anal fins in the posterior half concave. [Gilb. 



(Pacific Ocean.) H. elassodon, Jord. & 



a. The prominent teeth in the anterior part 



of the upper and lower jaws large, [(Schmidt), 



canine-like H. elassodon dubius 



b. The prominent teeth in the anterior part 



of the upper and lower jaws not very 

 large. 

 «. The number of rays in dorsal fin 76-86, 



mostly 81-83; in anal 60-69, mostly [(Jord. & Gilb.). 



63-67 H. elassodon elassodon 



8. The number of rays in dorsal fin 67-75, 



mostly 71-74 ; in anal 51-59, mostly [(Gill & Towns.). 



54-55 H. elassodon robustus 



The synonymy of the three subspecies of Hippoglossoides 

 elassodon, Jordan & Gilbert, will be as follows : — 



1. Hippoglossoides elassodon dubius (Schmidt). 



Cynopsetta dubia, Schmidt {in litt.), 1902. 

 Hippoglossoides dubius, Schmidt, 1904. 

 Cynopsetta dubia, Schm. ; Jordan & Starks, 1906. 

 Hippoglossoides dubius, Schm. ; Snyder, 1912. 

 Cynopsetta dubia, Schm. ; Jordan, Tanaka, & Snyder, 1913. 



2. Hippoglossoides elassodon elassodon (Jord. & Gilb.). 



Hippoglossoides elassodon, Jordan & Gilbert, 1880. 



„ „ Bean, 1881. 



„ „ Jordan & Gilbert, 1883. 



,, „ Jordan & Goss, 1886. 



,, ,, Jordan & Evermann, 1898. 



„ „ Jordan & Gilbert, 1899. 



„ „ Schmidt, 1902, 1904. 



„ „ Jordan & Starks, 1906. 



,, „ Gilbert & Burke, 1910. 



Hippoglossoides katakurce, Snyder, 1911, 1912. 

 Hippoglossoides elassodon, Jordan, Tanaka, & Snyder, 1913. 

 Hippoglossoides katakura, Sn. ; Jordan, Tanaka, & Snyder, 1913. 



