374 



CARL L. HUBRS : 



H. dubius Schmidt. 

 H. robustus Gill and Townsend. 

 // hamiltoni Jordan and Gilbert. 

 // propinquus Hubbs. 



D. — Status of the Species of the Subgenus Cynopsetta. 



Four of the species of Cynopsetta : elassodon, dubius, hamiltoni, and 

 propinquus have already been examined and compared by the writer 

 (/. c). These species were found to be quite distinct from one another. 

 Comparisons of descriptions of the fifth known species, H. robustus, 

 with specimens of both hamiltoni and propinquus, seemc.1 to indicate 

 that robustus, with its deeper body, etc., was distinct. The measure- 

 ments presented by Schmidt indicate clearly that the specimens which 

 he identified as Hippoglossoidcs elassodon robustus have more slender 

 bodies than the types of robustus, and that they have shorter fin-rays 

 especially in the pectorial fin, than in hamiltoni. It is probable that 

 Schmidt's form is identical with neither robustus nor hamiltoni, as he 

 urged. In both of the characters just mentioned it agrees with H. 

 propinquus. 



Schmidt refers Hippoglossoidcs katakurce Snyder to H. elassodon. 

 As the writer has previously indicated (/. c., p. 466), H. katakurce is 

 a synonym of H. dubius ; the type has 12 gill-rakers on the lower 

 limb of the outer arch; dubius has 13 — 15 (rarely 12, or even 11 or 

 17) ; elassodon has 15-19. 



Hippoglossoidcs dubius cannot be an age-variant of elassodon, as 

 Schmidt suggested, because of the numerous differences evident in both 

 young and adult, as previously described by the writer. 



E. — The Relationship of the Species of the Subgenus 



Cynopsetta. 



Schmidt has referred all the Pacific species of Hippoglossoidcs to 

 H. elassodon, recognizing three subspecies : //. e. dubius, H. e. elassodon, 



