NO. 2082. 



FLOUNDERS AND SOLES FROM JAPAN— HUBBS. 



475 



Measurements in hundredths of length to base of caudal. 



Albatross station 



Dorsal rays 



Anal rays 



Pores 



Gill-rakers 



Length, mm 



Length, head 



Depth, body 



Diameter, upper eye. 

 Snout from upper eye 

 Maxillary, eyed side. . 

 Pectoral, eyed side. . . 



Ventral, eyed side 



Length, caudal 



Height, dorsal 



Height, anal 



5071 



5071 



5071 



5074 



5074 



5074 



4946 



60 



61 



61 



61 



62 





59 



52 



49 



51 



45 



52 



52 



49 



60 



61 



62 



66 



67 





64 



6+10 



6+10 



5+9 



5+9 



x+10 



x+10 



5+9 



94 



87 



77 



75 



69 



67 



71 



22 



24 



24 



23 



24 



24 



23 



44 



46 



43 



42 



41 



42 



38 



7 



7 



7 



7 



7 



8 



7 



5.5 



7 



5 



7 



6 



7 



5 



7 









7 



8 



7 



12 



12 



12 



11.5 



12 



13 



12 



9 



9 



10 



10 



11 



11 



10 



27 



28 



27 



28 



28 



29 



28 



11 



12 



11 



11 



11 



12 



12 



11 



11 



11 



11 



11 



12 



12 



PLEURONICHTHYS CORNUTUS (Temminck and Schlegel). 



Platessa cornuta Temminck and Schlegel, Fauna Japonica, Poies., 1846, p. 179, 



pi. 90, fig. 1. Nagasaki. 

 Pleuronichthys cornutus Jordan and Stares, Proc. U. S. Nat. Mus., vol. 31, 1906, 

 p. 201. 



Albatross stations 4878 and 4885, Eastern Sea. 



Albatross station 4946, near Kagoshima, south coast of Kiusiu. 



One specimen from Tsuruga, collected by the Albatross on July 24, 

 1906. 



In 30 specimens, including several in the collections of Stanford 

 University, 15 have 5 gill-rakers on the lower limb of the arch, 13 

 have 6, and 1 has 7, another has 2 + 7 on the blind side, 2 + 9 on the 

 eyed side; the rudimentary gill-rakers are counted. 



One specimen, 112 mm. long, from Swatow, China, reported on by 

 Rutter, 1 collected by Miss A. M. Fielde, and in the collections of 

 Stanford University, shows several points of difference when com- 

 pared with Japanese specimens. The gill-rakers are more numerous, 

 longer, and slenderer, 3 on the upper limb on both sides, 8 on the 

 lower limb of the blind side, 7 on the lower limb of the eyed side, the 

 total number 10 or 11 instead of 7 or 8 as usual in Japanese speci- 

 mens. The spines of the head are developed more strongly. The 

 height of the spine at the posterior end of the interorbital, measured 

 from the lower surface of the interorbital bone, is 2 in upper eye (3.5 

 or rarely 2.7 in Japanese specimens). The spine at the anterior end 

 of the interorbital is of the same length as the posterior spine when 

 measured from the upper ridge of the interorbital. Four dorsal rays 

 are extended on the blind side of the head, reaching to opposite the 

 upper margin of the premaxillary. In Japanese specimens only 3 

 rays are on the blind side of the head, and they do not extend to the 

 upper margin of the premaxillary. 



The specimen collected by A. M. Fielde at Swatow, China, may 

 finally prove distinct from P. cornutus, but the material at hand does 

 not justify its description at present as a new species. 



i Proc. Acad. Nat. Sci., Phila., 1897, p. 88. 



