616 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxi. 



Scales liiro-e; a long- pointed scale in axil of both pectorals and ven- 

 trals. Lateral line prominent, with branched tulmles. 



Orig-iii of dorsal a little l)ehind that of ventrals and midwa}^ between 

 tip of snout and base of caudal; its upper edge concave, the last ray 

 elongate; anal tin rather low, with concave margin, its length li times 

 that of dorsal; basal portion of fin scaled; caudal deeply lo])ed, some- 

 what longer than head; pectorals small, thoracic. Ventrals small, 

 their origin about midway between origin of pectoral and that of anal. 



Color, l)ack and top of head dusk}^ olive, other parts pale, silvery; 

 margin of each scale of a brilliant silver; tins brownish. 



This species is here descril)ed from a single small specimen obtained 

 at Nairn, in the Okinawa or Riu Kiu Islands, received from the Impe- 

 rial Museum of Tokyo. It has not been hitherto recorded from Japan. 

 It is common throughout the East Indian region, often entering 

 streams and pools. 



(KVTTpivog^ carp; fMo?, resemblance.) 



2. ELOPS Linnaeus. 



Elops LiNN.EUs, Syst. Nat., 12th ed., 1766, p. 518 [saurus). 

 Mugilomorus Lacepede, Hist. Nat. Poiss., V, 1803, j). 398 {anna-carolina) . 

 Tnchonotns Rafinesque, Analyse de la Nature, 1815, p. S% {anna-carolina); sub- 

 stitute for Mugilomorus, considered objectionable. 



Body elongate, covered with thin, small, silver}^ scales. Dorsal fin 

 slightl}; behind ventrals, its last rays short, the tin depressible into a 

 sheath of scales; anal fin smaller, similarly depressible; pectorals and 

 ventrals moderate, each with a long accessory scale. Opercular l)ones 

 thin, with expanded, membraneous borders; a scaly occipital collar. 

 Lateral line straight, its tubes simple. Pseudobranchiaa present, large. 

 Vertebras 66 to 72. One species known, a large fish of the open sea 

 remarkable for the development of scaly sheaths. The young are 

 ribbon-shaped and elongate, passing through a series of changes like 

 those seen in AlhuJa. 



(sXoip^ name of some sea fish; a swordfish or sturgeon; from e'Xavvoo^ 

 to drive or move.) 



2. ELOPS SAURUS Linnaeus. 



Elops saurus Linn.eus, Syst. Nat., 12th ed., 1766, p. 518 (Carolina). — Gitnther, 

 Cat., VII, 1868, ]). 470 (Cuba, Jamaica, St. Croix, South America, Cape of 

 Good Hope, Zanzibar, Djidda, I'inang, China). — Ishikawa, Prel. Cat., 1897, 

 p. 8 (Miyako, Riu Kiu Islands). — Jordan and Evermaxx, Fishes Nortli and 

 Mid. Amer., I, 1896, p. 410; Fishes of Hawaiian Islands, 1905, p. 53, %. 

 8, and of most authors. 



Argentina Carolina Linn.eus, Syst. Nat., 12th ed., 1766, p. 519 (Carolina) (on the 

 Harengus minor bahamensis of Catesby ) . 



Argentina 7nachnata YouskAl, Descr. Anim., 1775, p. 68 (Djidda, Arabia). 



Elops machnain Jordan and Evermann, Proc. U. S. Nat. Mus., 1902, XXV, p. 

 327 (Suwata, Formosa). 



