JORDAN AND THOMPSON! FISHES OBTAINED IN JAPAN IN 1911. 227 



gg. Depth less, 3.33 to 2.77. 



/;. Barbels .slightly over half diameter of eye; lateral stripe indistinct, or lacking. 



(. D. with nine developed rays; A. 10; barbel 1.5 in snout intermedins. 



a. D. 8; A. 9; barbel equal to snout lanceolatus. 



hh. Barbels much less than half of ej'e; lateral stripe indistinct, as wide as pupil of eye. . . moriokm. 



Note on Metzia Jordan & Thompson, a New Genus of Cyprinidce, Allied to 



Acheilognathus. 



The species described by Jordan and Evermann (Proc. U. S. N. Mus., Vol. 

 XXV, 1902, p. 323), as Acheilognathus mesembrinus, may be taken as the type of a 

 new genus, Metzia, characterized by three rows of pharyngeal teeth 1-3-5 on left 

 side, 1-3-4 on right; lateral line complete, decurved; anal inserted behind last dorsal 

 ray; maxillary long, extending beyond anterior border of eye; body deep, com- 

 pressed; peritoneum black; intestine elongate; no barbel. Characters otherwise 

 as in Acheilognathus. Named for Charles William Metz, assistant in Stanford 

 University, and associated with the writers in the identification of the fishes of the 

 collection upon which we are now reporting. 

 56. Acanthorhodeus atremius sp. nov. (Plate XXV, fig. 3). 



The genus Ai^nthorhodeus Bleeker is separated from Rhodeus by the develop- 

 ment of one of the rudimentary rays of the dorsal as a distinct spine. The Chinese 

 species of the genus are large fishes, sharply separable from Rhodeus, but the 

 Japanese species of Acanthorhodeus are scarcely distinct from the other genus. 

 This may make the mergence of the two groups necessary. 



Described from two specimens collected by Jordan & Snyder in the Chikugo 

 River at Kurume in 1900; both males,4.5 and 5 cm. in total length; type in the 

 Stanford University Collection: cotype in the Carnegie Museum. 



Head 4 in body-length; depth 2.4; eye 2.66 in head; snout 4; length of caudal 

 peduncle from last anal. rays 1.25 in head, its depth 2; dorsal height 1.25; dorsal 

 base 1.125; anal height 1.5, its base 1.2; D..rays II, 10; A. II, 9 or 10; pharyngeal 

 teeth 5-5; scales in lateral series, 32, in transverse series between insertions of 

 vertical fins 11, between occiput and dorsal 16. 



Snout not overhanging premaxillaries, its tip level with lower half of pupil; 

 maxillaries not quite reaching anterior border of orbit; mouth not very oblique; 

 male with tubercular prominences on snout widely separated and protuberant; a 

 small tuberculated area above and between eye and nostril; no barbels present; 

 pharyngeal teeth hooked, with narrow grinding surface occasionally plicate on the 

 lower side as in Acheilognathus rhombeus; gill-rakers short, 3-|-6. 



Dorsal inserted midway between snout and base of caudal, its third, or first 



