THE GERRID FISHES OF JAPAN— JORDAN. 



247 



Color silvery, rather darker al)Ove than usual; faint dark shades 

 along- bases of soft dorsal rays; tip of spinous dorsal black; tips of 

 ventrals more or less dusk}-; axil of pectoral rarely entirely pale, 

 usually dark; ventrals and front of anal yellow in life. 



Of this species, common on sandy shores throughout southern Japan, 

 we have man}^ specimens from Nagasaki, Wakanoura, and Oita, in 

 Bingo. It is an elongate species, with the back dusky and the tin spines 



Fig. 1. — Xyst.ema erythrourum. 



low. It has been confounded with Xysta^ina oyena (Forskal), of India 

 and Arabia, but it is apparently distinct. The latter is a deeper lish, 

 with the caudal dusky liehind and the ventrals pale. 



{epi)6pog red; ovpd tail, which is not the case; Bloch's type was 

 doubtless discolored.) 



2. GERREOMORPHA Alleyne and Macleay. 



Gerreomovpha Alleyne and Macleay, Proc. Linn. Scm?. N. S. W., I, 187B, p. 274 

 [roMmta). 



This genus differs from Xt/stx)ua^ and from all other Gerrldiv^ in 

 having ten dorsal spines instead of nine. The type is Australian. 

 (jrerreoiitorplia tS',??!^/*:'^^ (Hamilton-Buchanan) is an Indian species of this 

 genus. 



(Gerres; /<o/j^//, foi-iu.) 



2. GERREOMORPHA JAPONICA (Bleeker). 



Gerres japonicus Bleeker, Nieue Nalez, Japan, 1857, p. 93, p\. v (Nagasaki). — 

 Nystrom, Svensk. Vet. Ak. Handl., 1887, p. 12 (Nagasaki). 



Xystxmn japonlcum Smith and Pope, Proc. U. S. Nat. Mus., XXXI, 190(1, p. 

 478 (Kochi; Urado). 



Hahitat. — Bay of AVaka, to Nagasaki and southward to the Riu Kiu 

 Islands; rare. 



