JORDAN AND THOMPSON: FISHES OBTAINED IN JAPAN IN 1911. 



285 



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Fig. 55. Peristedion orientale Temminck & Schlegel. (From Bull. U. S. Fi.sh Coram., Vol. XXII, 

 p. 593). 



We have before us a young example of Dodyloptena orientalis (No. 6307a) 

 sixty-eight millimeters long, with a black spot on pectoral as in D. cheirophthalmus 

 (Bleeker). 



One small specimen, fifty-six millimeters in total length, from Misaki, (No. 

 6100a) is with slight hesitation identified as D. orientalis, because of the very much 

 greater proportionate length of the head and spines, large eye, and long dorsal spine. 

 An examination of a series of individuals shows that in this species this is a char- 

 acter of the young. The following table illustrates the changes with age and the 

 peculiarities of the specimen before us. The fin and scale-counts are typical. 



By Jordan and Richardson^ it is stated that Dadyloptena orientalis lacks a 

 lateral fine, but a close examination shows its presence in fully functional condition 

 with developed tube and pores. The distinction raised between this genus and 



« Body-length, to base of caudal, in terms of hundredths of which the other measurements are 

 given. 



' Proc. U. S. N. Mus., Vol. XXXIII, p. 664, 1908. 



