162 



C. ISHIKAWA. 



taken at the root of the dorsal fin. Head oblong, snout longer than the 

 eye which is about one fifth of the length of the head and considerably 

 more than one-half of the width of the interorbital space. Mouth 

 slightly oblique, slightly wider than long, its posterior angle ending at 

 about two-third to three-fourth from the end of the snout to the orbit ; 

 barbel a little shorter than the length of the ej^e, placed on the extremity 

 of the intermaxillary. The origin of the dorsal fin is in advance of that 

 of the ventral, and slightly nearer to the end of the snout than to the 

 root of the caudal. Pectoral fin shorter than the head without snout, 

 and nearly as long as the distance from the middle point of the orbit to 

 the end of the operculum, and terminates a long way from the root of 

 the ventral. Ventral fin slightly shorter than the pectoral, and reaches 

 to about two-third the distance between the root of the ventral and the 

 vent. Caudal fin deeply emerginate. 



There are three series of scales between the lateral line and the 

 ventral fin. Back brownish, a blackish band along the side of the body 

 beginning from upper part of the gill-opening to the root of the caudal 

 fin. In young specimens of 90 mm and less a small triangular spot of 

 blackish colour is visible at the root of the tail in the line with and dis- 

 tinct from the end of the black band. Dorsal fin with a narrow streak of 

 blackish colour between each rays. Pharyngeal teeth 5/3-3/5, slightly 

 hooked at the tip, except the foremost one of the 5. Intestinal tract 

 with only a single turn. Peritoneum with a few black pigments. 

 Number of vertebrae 35, of which 16 are caudal. 



We obtained a number of these interesting fishes at the fish-market 

 at Matsubara a small village situated close to the Hikone town, in the 

 month of December, 1898. A number of smaller but fine specimens 

 were also sent to me from the same place, at my request, by my friend 

 Mr. Hirase in the month of April this year. These are all caught in a 

 kind of fish trap called Eri, which is very extensively used in the lake. 



