The Fresh Water Fishes of the Island of Formosa. 233 



extending from the ventrals to beyond the origin of the anal. Anal 

 fin rather elongate, with about twelve rays. Mouth subinferior, 

 small, arched; lower jaw without labial fold. Barbels none. Gill- 

 rakers very short; pseudobranchia\ Pharyngeal teeth 5-5, com- 

 pressed, not denticulated, the bevelled surface with a simple groove. 



Male, during the spawning season, with tubercles on the snout, 

 and the female with a long external urogenital tube. (Giinther). 



Distribution: Europe; Caucasus; China; Formosa; liasin of Amur; 

 Corea; Japan. 



35. Rhodeus ocellatus (Kner). 



1859. Pseudoperilampus (?) ocellatus Kner, Novara, Fisch., Ill, p. 365, Taf. 15, 



Fig. 6; Shanghai. 

 1868. Rhodeus ocellatus Gijnther, Cat. Fish., VII, p. 280; China. — Bleeker, 



Mem. Cyprin. Chine., 1871, p. 34, PI. VI, Fig. 3; Yang-tze-kiang. — Gijnther, 



Ann. Mag. Nat. Hist., Sept., 1873, p. 249; Shanghai. — Jordan & Seale. 



Proc. U. S. Nat. Mus., XXIX, 1905, p. 518; Shanghai. — Jordan & Metz, 



Mem. Carneg. Mus., VI, 1913, p. 20; Suigen, Corea. 



Head 4.23 in length; depth 2.28; D. 2, 12; A. 2, 13; P. 1 1 ; V. 6 ; 

 width of head 2 in its length; eye 3 in head; interorbital space 2.5; 

 snout 3; pectoral 1.25; ventral 1.33; thirty-four scales in a longitudinal 

 series, thirteen scales in an oblique series between origin of dorsal and 

 the middle of belly; pharyngeal teeth 5-5; gill-rakers 2 + 10. 



Body much compressed, deep and rhomboidal; head small, its 

 dorsal profile slightly concave above the eyes; snout as long as the 

 diameter of eye, tip obtusely rounded, with a bony oval swelling, which 

 is provided with a number of minute tubercles, more or less over- 

 lapping the upper lip; interorbital space broad, rather fiat; mouth 

 subinferior, rather transverse, its angle reaching the anterior border 

 of nostril below; lower jaw slightly shorter than the upper; no barbel; 

 nostrils close together, approximated to eyes, posterior nostril widely 

 opened; pharyngeal teeth compressed, the sides not serrated, with a 

 grinding surface. 



Dorsal fin elongate, its origin nearer tip of snout than base of caudal, 

 inserted behind the origin of ventral, base of the fin one and one-third 

 times as long as the head; pectoral fin reaching to within a short dis- 

 tance to ventral; the ventral slender, scarcely reaching the origin of 

 anal; anal fin elongate, inserted beneath the middle of the base of 

 dorsal, anterior ray longest; caudal fin deeply emarginate, the tip of 

 each lobe pointed. 



