190 PROCEEDINGS OF THE ACADEMY OF [May-Oct„ 



covering the upper lip; interorbital space and top of head more 

 or less convex, eye small, anterior and superior, 1. 46 in snout; 

 mouth salDinferior, not very oblique, maxillary reaching posterior 

 border of nostril; lips thin, the lower discontinuous, distinct at 

 the angle of mouth only; anterior margin of lower jaw trenchant; 

 pharyngeal teeth hooked, with no grinding surface; nostrils close 

 together, on the supra-lateral part of snout; gill -openings rather 

 large; gill-rakers rather short and pointed. Origin of dorsal mid- 

 way between tip of snout and base of caudal, the first branched 

 ray the longest, reaching beyond the others to origin of anal when 

 depressed, its outer margin nearly straight; pectoral five-eighths 

 the distance to ventrals; origin of ventral in advance of that of 

 dorsal, inserted nearer origin of anal than that of pectoral; anal 

 inserted a little nearer to tip of pectoral than base of caudal, the 

 first branched ray the highest, scarcely reaching beyond the others 

 when depressed, the base of the fin 1.50 in its height, outer border 

 shghtly concave; caudal peduncle long, its depth 2.50 in head; 

 caudal fin deeply emarginate, lobes sharply pointed. Scales cycloid, 

 imbricated, of rather even size; no pectoral flap; ventral with a 

 slender scaly flap; lateral line continuous, more or less decurved 

 anteriorly, running along the middle of tail. Color in alcohol uni- 

 formly grayish brown above, paler below; all the fins whitish. Total 

 length 145 mm. 



Habitat: Central Formosa (type-locality unknown). 



{Schistmus, split-tail; with reference to the vvell-developed rudi- 

 mentary caudal rays.) 



Leuciscus medius new species. 



Head 3.83 in length; depth 4.55; D. iii,7; A. iii,7; P. 15; V. 8; 

 scales 76 in lateral line; 19 scales between the origin of dorsal and 

 lateral line, 17 between the latter and middle of belly; 11 scales 

 between lateral line and the root of ventral; width of head 2 in 

 its length; snout 3 in head; eye 4.33; interorbital space 3; pec- 

 toral 1.71; ventral 1.81; pharyngeal teeth 4,2-2,5; gill-rakers 2 + 7. 

 Body elongate, compressed; head elongate, pointed, sides flat- 

 tened, upper profile nearly straight; snout rather pointed, slightly 

 produced; eye moderate, anterior 1.50 in snout; mouth terminal, 

 slightly obhque, maxillary reaching posterior border of nostril; lips 

 thin, not cUIated; lower lips discontinuous; anterior margin of 

 lower jaw trenchant; pharyngeal teeth hooked, with no grinding 

 surfaces, nostrils close together, in front of eye above; inter- 



