The Fresh \\'ater Fishes of the Island of Formosa. 241 



the root of \enlral; \enlral reaching vent; four anterior branched 

 rays of the anal elongate, reaching beyond the root of caudal; caudal 

 fin deeply emarginatc, tip of each lobe pointed. 



Scales minute, thin; lateral line decur%ed, extending along the 

 lower half of the tail. 



Color in formalin dark gray abo\e, lower half of tlie sides and belly 

 silvery; sides with about twelve indistinct dark cross-bars; a black 

 longitudinal streak runs along the middle of the tail; membrane of 

 the dorsal with a series of dark streaks; dorsal and caudal fins dusky, 

 other fins whitish. 



Total length 102 mm. 



The present description is from a specimen from the Tamusui River 

 near Shinten, collected by T. Aoki in December, 1916. 



Habitat: Tamusui River (a single specimen). 



Genus Metzia Jordan & Thompson. 



1914. Metzia Jordan & Thompson, Mem. Carneg. Mus., VI, no. 4, p. 227. 

 (Type Acheilognalhus mesetnbrinum Jordan & Evermann.) 



Body short, deep, very greatly compressed; head small and pointed; 

 mouth moderate, somewhat oblique; the jaws subequal, maxillary 

 reaching anterior edge of orbit; pharyngeal teeth in three rows, 

 4, 4, 2 — 2, 4, 4, with brown tip. Scales large and well imbricated; 

 lateral line complete, decurved. Origin of the dorsal slightly nearer 

 tip of snout than tip of caudal fin, anal inserted behind last dorsal ray; 

 ventrals and pectorals moderate, the latter falcate; caudal fin lunate. 

 Peritoneum black; intestine elongate. No barbel. 



Distribution: Botel Tobago Island (Near Formosa). 



39. Metzia mesembrina (Jordan & Evermann). 



1903. Acheilognalhus mesetnbrinum Jordan & Evermann, Proc. U. S. Nat. Mus., 

 XXV, p. 323; Kotosho, Formosa. 



Head 4 in length; depth 3.18; D. 2, 7; A. 3, 14; P. 15; V. 8; width 

 of head 2 in its length; eye 3.6 in head, interorbital space 2.57; snout 

 3.6; thirty-six scales in the lateral line, eight scales in an oblique 

 series between origin or dorsal and lateral line, five scales between the 

 latter and the middle of belly, three scales between lateral line and 

 the root of the ventral; pharyngeal teeth 4, 4, 2 — 2, 4, 4. 



Body deep, very greatly compressed; head small and pointed; 

 snout short, truncated in front; mouth oblique, its angle reaching 

 beyond the anterior border of orbit; the jaws subequal, with thin lips; 

 17 — DEC. 19, 1919. 



