856 PROCEEDINGS OF THE NATIONAL MUSEUM. 



phaiyngeal teeth 5, 4, 2 — 2, 4, 5; width of head 2J in its length; snout 

 Hi in head; eye 7; interorbital space 3i; pectoral U, ventral If; 

 eye 2 in snout. 



Body elongate, oblong, and compressed. Head rather pointed, 

 greatly compressed, the sides flattened, and the upper profile almost 

 straight; sides of snout roiuided, and the tip l)lunt and truncated; eye 

 small, anterior and superioi" mouth large, very oblique, maxillary 

 reaching the anterior margin of the eye, protractile, ensheathed above, 

 and with a deep notch along the sides, into which the rami of the 

 mandible tit; lower jaw projecting, and the sjniiphysis fitted into a 

 notch in the upper jaw; pharyngeal teeth on thin and long bones, more 

 or less conical, several in the larger row with narrow grinding surface, 

 and all rather small; nostrils close together on the sides of the snout, 

 and about a half an e3'e diameter distant from the upper front of the 

 eye; interorbital space and top of the head broad and flattened, thea 

 former very slightly elevated. Gill-openings moderately large. Gill-* 

 rakers 3+9, short and firm; pseudobranchise present. Intestine with 

 few turns, short. Peritoneum pale or silvery. 



Scales large, cycloid, and more or less narrowly imbricated; a short, 

 iiesh}^ pectoral flap; ventrals with a scaly flap at base. 



Origin of dorsal midway between tip of snout and base of caudal, 

 when depressed, reaching bej^ond the origin of the anal, the base o1 

 the fill 2if in head, and its upper edge straight; origin of anal a little 

 nearer the base of caudal than middle of pectoral, and the base of ihv 

 fin I'i in head; caudal deeply emarginate, and the lobes pointed; pec 

 torals long, reaching four-fifths the distance to origin of ventrals: 

 origin of ventral below that of dorsal and r(>aching to within a short 

 distance of the origin of the anal. Caudal peduncle If in head, and 

 its least depth 3 in head. Lateral line continuous, inferior, and running 

 along the lower part of the caudal pedu cle. j 



Color in alcohol, dark brown above, the lower portions of the body \ 

 pale; dorsal with the membranes between the rays and the tips of the 

 posterior rays, grayish black, the rest of the fin paler; anal and caudal 

 more or less grayish; pectorals and ventrals pale. Male with rosy 

 shades in life. 



Length, 12^ inches. 



This description from an adult male from Lake Biwa. 1 



Of this species we have numerous specimens from Lake Biwa, at the | 

 little fishing hamlet of Matsubara, near Hikone, Lake Yogo, in '' 

 Mino, the Yodo RiAer at Osaka, and a few examples from the collec- 

 tion of K. Otaki, from Karasaki, on Lake Biwa. 



This and numerous other species were collected also at Otsu, the 

 chief town on Lake Biwa, hy Prof. James F. Abbott. 



Breeding males have the sides of the head, snout, mandible, lower 

 surface of caudal peduncle, and anal fin provided with liorny tubercles. 



