NO. J875. THE JAPANESI^ l^PA RID JS— JORDAN A^D THOMPSON. 565 



330 nun. in total length. Preorbital nearly quadrate, its posterior 

 margin oblique. Maxillary largely sheathed, reaching barely to front 

 of eye, mouth small. Preopercular margin slightly serrate, with a 

 narrow dermal edge. Opercle with two flat points. Four or five 

 small recurved canines in premaxillaries on either side of tip of upper 

 jaw. Outer row on either side slightly enlarged, inner band narrow, 

 vUliform. In lower jaw an outer row anteriorly only. Inner row 

 becomes single and enlarged somewhat laterally, although a villiform 

 band anteriorly, Gill-rakers very short and stumplike, 6 + 8 in 

 number. 



Dorsal spines rather weak and flexible, of nearly equal length, 2§ 

 in head. Dorsal rays of equal length with spines, the last slightly 

 longer. Anal spines also weak, third longest, 3 in head, first two- 

 thirds length of third. Anal rays similar in length to those of dorsal. 



Fig. 5.— Euthtopteroma vikgatum. 



Pectorals and ventrals subequal, nearly equal to length of head. 

 Caudal deeply forked, the upper lobe prolonged into a filament nearly 

 equal to length of head, and its length from base of caudal four times 

 that of middle caudal rays. 



Scales large, finely ctenoid; present across occiput, on cheeks, 

 opercle, sub- and interopercle, not on limbs of preopercle or preor- 

 bitals. Scales on cheeks large, in three rows. 



Color of alcoholic specimen silvery, darker above, more or less 

 bright red in life. A narrow line of intense and permanent yellow 

 extending from angle of opercle straight to upper rays of caudal, 

 another parallel to it, one row of scales above lateral line, but broader 

 and fainter anteriorly and ending at last rays of soft dorsal. Fol- 

 lowing rows of scales, or rather between them, below lateral line 6 or 7 

 silvery stripes as broad as pupil. In young fish the yellow lines 

 have disappeared. 



