JORDAN AND THOMPSON: FISHES OBTAINED IN JAPAN IN 1911. 285 
Fic. 55. Peristedion orientale Temminck & Schlegel. (From Bull. U.S. Fish Comm., Vol. XXII, 
p. 593). 
We have before us a young example of Dactyloptena 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. 
Hilo, | Queens- | Misaki, 
await pee Wakanoura, Kii, Japan. Japan 
Fae. NO. sdekescel ne 
ILGTGNO: . oe Sab ado mene Renae eee 215mm. 148 122 115 | 95 82 56 
Hi35) abn wef Seno ee | 24 25126 25 26 28 32 
Snout to tip of scapular spine......... | 37 38 =6| «(838 SOE G4 43 52 
Cero cco ocieae | 8.5 9:0 |) 85 9.0 10.0 11.0 14.0 
PECIORE... coc denne pon OE Ea eene | 95 87 90 92 84 91 81 
Dn Sere A ee | 35 Moras 35 36 36 37 44 
WIGELORDILALESPRCC ee. asses cs ee ere - | 13 feet} 14 13:5, 15 16 19 
Distance from snout to occiput........ a ees 20 ar | 29 24 | 82 
By Jordan and Richardson’ it is stated that Dactyloptena orientalis lacks a 
lateral line, but a close examination shows its presence in fully functional condition 
with developed tube and pores. The distinction raised between this genus and 
6 Body-length, to base of caudal, in terms of hundredths of which the other measurements are 
given. 
7Proc. U. 8. N. Mus., Vol. XX XIII, p. 664, 1908. 
