280 Annals of the Carnegie Museum. 



snout 3.4; pectoral 1.69; ventral 1.64; forty- two scales in the lateral 

 line, four and one-half scales in an oblique series between origin of 

 dorsal and lateral line, twelve scales between the latter and the middle 

 of belly, nine scales between lateral line and the ventral; gill-rakers 

 5 + 18; six branchiostegals. 



Body oblong, compressed, rather deep, dorsal and ventral profiles 

 strongly convex; head moderate, with two sharp flat spines on the 

 posterior margin of operculum, pre-opercles finely serrated; ventral 

 surface of head convex and smooth; snout smooth, pointed anteriorly, 

 interorbital space more or less convex; mouth oblique, with thin 

 fleshy lips, its angles extending backward to the middle of the orbit 

 below; lower jaw protruding; teeth on both jaws in villiform bands, 

 vomer and palatines with a band of villiform teeth, no canine teeth; 

 nostrils approximated, supralateral, in front of eye above, anterior 

 nostril in a short tube. 



Origin of the dorsal opposite that of ventral, much nearer tip of 

 snout than base of caudal, elongate, fourth and fifth spines longest, 

 soft rays higher than spines, the base covered with a scaly sheath; 

 pectoral lateral, reaching beyond the middle of ventral; ventrals close 

 ogether, each armed with a short strong spine, the end of the fin- 

 membrane adnate to the belly, tip not reaching the anal; anal fin rather 

 long, with three strong spines, second strongest but shorter than the 

 third, inserted in front of the origin of first dorsal ray, the base of the 

 fin covered with a scaly sheath; caudal fin rather broad, divergent, 

 very slightly emarginate; caudal peduncle rather long, its depth 2.33 

 in length of head. 



Body covered with moderate ctenoid scales; cheeks and operculum 

 covered with scales; lateral line continuous, slightly upcurved, running 

 along the middle of the tail. 



Color in formalin dark grey above, belly and lower parts of sides 

 yellowish; posterior margin of scales of the sides spotted with dark, 

 their anterior margins finely speckled with black; dorsal fin dark 

 gray, soft rays fuscous; pectorals dusky; ventrals white; membrane 

 of the anal finely speckled with black; caudal fin dark brown. 



Length of body 205 mm. 



Described from a specimen from Tamusui River, collected by T. 

 Aoki in December, 1916. 



Habitat: Tamusui River near Shinten; Choso River at Koshiryo; 

 Giran River near Inzanpo; Bokusekikaku. 



