1920. 



NATURAL SCIENCES OF PHILADELPHIA. 



191 



orbital s])ace and top of head very slightly convex; gill-openings 

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

 nearer base of caudal than tip of snout, rather high, the first branched 

 ray the longest, reaching far beyond the origin of anal when de- 

 pressed, its outer margin nearly straight, anal inserted nearer tip 

 of pectoral than base of caudal, the first branched ray the highest, 

 not reaching beyond the others when depressed, the base of the 

 fin 1.42 in its height, its outer margin straight; pectoral two-thirds 

 the distance to ventrals; ventrals inserted nearer origin of anal 

 than that of pectoral, in advance of origin of dorsal; caudal peduncle 



Fig. 2. — Leuciscus medius new species. 



compressed, its depth 2 in head; caudal fin deeply forked, the lobes 

 obtusely pointed. Scales cycloid, moderately small, of rather even 

 size; no pectoral flap; ventral with a small fleshy flap; lateral line 

 continuous, slightly decurved, running along the middle of the tail. 

 Color in alcohol grayish brown above, paler below; all the fins 

 whitish. Total length, 110 mm. 



Habitat: Central Formosa (type-locality unknown). 



The present species distinctly differs from the former in having 

 19 scales between origin of dorsal and lateral line. 



{Medius, central, the species having been obtained in central 

 Formosa.) 



