The Fresh Water Fishes of the Island of Formosa. 259 



Measurements of Gambusia affinis. 



Locality. 



Shori ( 9 ) . 

 Shori ( 9 ) . 

 Shori ( 9 ) . 

 Shori ( 9 ) . 

 Shori (cf). 

 Shori (dl). 

 Shori (cf). 



44 

 41 

 40 

 37 

 24 

 23 



Family MONOPTERID^. 

 Genus Fluta Bloch & Schneider. 



1798. 



Monopterus Lacepede, Hist. Nat. Poiss., II, p. 139. (Type Monoplerus 



javanensis Lacepede). Not Monopterus of Volta, 1796, a genus of fossil 



fishes. 

 1801. Fluta Bloch & Schneider, Ichth., p. 565. (Type Monopterus javanensis 



Lacepede.) 

 1845. Ophicardia McClelland, Calcutta Journ. Nat. Hist., V, p. 191. (Type 



Ophicardia pharyriana McClelland.) 

 1855. Apterigia Basilewsky, Nouv. Mem. Soc. Nat. Mosc, X, p. 247. (Type 



Apterigia saccogularis Basilewsky.) 



Body elongate, naked; tail short, tapering to a point; no barbels; 

 margin of the upper jaw formed by the premaxillaries, the maxillaries 

 well developed, lying behind them and parallel with them; lips thick; 

 palatine teeth small, in a narrow band; gill-opening confluent into a 

 ventral slit, the membrane united to the isthmus; gill-arches three, 

 with gill-fringes rudimentary, and with moderate slit between them; 

 no accessory breathing sac; lateral line present; no pectoral or ventral 

 fins; dorsal and anal reduced to low folds'; ribs present; no air-bladder; 

 stomach without caecal sac or pyloric appendages. Ovaries with 

 oviducts. (Jordan & Snyder). 



49. Fluta alba (Zuiew). 

 Taunagi (Japan); Senhii (Formosa). 



Murcena alba Ziew, Nov. Act. Sci. Petropol, p. 229, PI. VII, Fig. 2. 



Monopterus javanois'LAci.VE.Ti^, Hist. Nat. Poiss., II, p. 139; Java. 



Monopterus javanensis Bloch & Schneider, Syst. Ichth., p. 565, after 

 Lacepede. — Cantor, Malayan Fishes, 1850, p. 339, Pi. V, Figs. 6-8. — 

 Bleeker, Atlas Ichth. Mur., 1864, p. 118, PI. XL VII, Fig. i; Java; Sumatra; 

 Banka; Bintang, Borneo; Celebes.— Gunther, Cat. Fish., VIII, 1870, 

 p. 14; Batavia; Borneo; Siam; Formosa; China; Japan. — Day, Fish. Brit. 



1793- 

 1798. 

 1801. 



