364 SYNOPSIS. 



lowish-green, the whole surface with pretty large distinct 

 yellowish- white spots ; fins bright red. Fin-rays, D. 2 + 



52 : P. 28 : V. 1 + 9 : A. 1+25 : C. 30. Cuv. Vol., 



x. p. 39, pi. 282 ; Yarr. Brit. Fish., i. p. 194. Zeus luna, 

 Gmel, Lirm. The opah, Pern. Brit. Zool, iii. p. 299, 

 pi. 46 ; Don. Brit. Fish., pi. 97. 



FAM. VII. TcenwidcB. Fam. of Riband-shaped Fishes. Body 

 excessively elongated, narrow, and very much compressed; scales 

 very small or wanting. 



GEN. XXXII. LEPIDOPUS. Head elongated and pointed, 

 the lower jaw projecting, teeth in a single row in each jaw, cut- 

 ting and pointed; dorsal extending the whole length of the 

 body; ventrals reduced to two scales; branchiostegous rays 

 eight. 



Sp. 55. L. argyreus. Scabbard-fish. Body ensiform, cari- 

 nated above and below ; dorsal fin commencing at the 

 nape, the rays simple and flexible ; pectorals rather long ; 

 tail distinct, and forked ; skin quite destitute of scales, the 

 colour like burnished silver, slightly glossed with blue. 

 Fin-rays, D. 105 : P. 12 : A. 17 : C. 17. Cuv. & Val, 

 viii. p. 223, pi. 223; Yarr. Brit. Fish., i. 198. Xipho- 

 theca tetradens, Mont. Mem. Wern. Soc., i. p. 81, and 

 623, pi. 2 and 3. Scabbard-fish, Penn. Brit. Zool., iii. 

 p. 210. 



GEN. XXXIII. TRICHIURUS. Ventrals and caudal wanting ; 

 the tail produced into a long tapering compressed filament ; 

 branchiostegous rays seven. 



Sp. 56. T. lepturus. Silvery Hair-tail. Body ensiform, be- 

 ginning about the middle to taper gradually to the tip of 

 the tail ; a single row of teeth on each side of each jaw ; 

 vomer without teeth, palatine bones each with a row of 

 very minute teeth : pectoral fin small, no vestige of ven- 

 trals nor any scale in their place; skin covered with a sil- 

 very film ; the colour of the whole silvery, except the fins, 

 which are greyish-yellow ; edge of the dorsal speckled 

 with black. Linn., Cuv. $ Vol., viii. p. 237 ; Yarr. Brit. 

 Fish., i. p. 204. 



