228 Annals of the Carnegie Museum. 



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

 armed with two strong osseous smooth spines, opposite the ventral; 

 pectorals reaching midway of the distance to origin of ventral, with 

 a fleshy flap; ventral rather slender, with a scaly flap; anal fin entirely 

 behind the dorsal, short, anterior ray the longest; caudal fin bifurcate, 

 tip of each lobe pointed; caudal peduncle rather long, its depth 2.25 

 in length of head. 



Body covered with uniform cycloid scales; lateral line slightly 

 decurved, extending along the middle of the tail. 



Color in formalin uniform dark gray above, paler below; lower parts 

 silvery; pectoral, dorsal, and caudal fins dusky, other fins whitish. 



Total length 230 mm. 



Described from a specimen from Giran. 



Habitat: Taihasho, Giran. (Two specimens). 



Genus Ischikauia Jordan & Snyder. 

 1901. Ischikauia Jordan & Snyder, Proc. U. S. Nat. Mus., XXIII, p. 346. 

 (Type Opsariichlhiis sieenackeri Sauvage.) 



Body compressed; caudal peduncle deep. Mouth obliciue; lower 

 jaw slightly projecting; maxillary freely protractile, not extending to 

 edge of orbit; no barbels. Teeth, all slightly hooked, with a narrow 

 grinding surface; in three rows; three or four on first, or outer row, 

 five on second, two on third, or inner row. Pseudobranchiae present. 

 Gill-rakers on first arch 13+4; low, pointed. Alimentary canal 

 twice as long as body. Air bladder in two divisions, extending pos- 

 teriorly to vent. Peritoneum with black pigment. Scales of moder- 

 ate size, about sixty-five in lateral line; thirteen from lateral line to 

 insertion of dorsal. Lateral line sharply decurved anteriorly, gradu- 

 ally curving upward and extending posteriorly along middle of caudal 

 peduncle. Dorsal inserted a little behind origin of ventrals, composed 

 of nine rays; first ray short, and closely adnate to the next; second ray, 

 spine-like, strong; the other rays branched. Seventeen anal rays; 

 the first two spine-like, weak. Caudal forked, the tips sharp. Pec- 

 torals pointed. (Jordan & Snyder.) 



Distribution: Formosa; Indo-China; Japan. 



32. Ischikauia macrolepis Regan. 



1908. Ischikauia macrolepis Recan, Ann. Mag. Nat. Hist. (8), I, i). 150; Kagi, 

 Formosa. •' 



Depth of body 3.33 in the length, length of head 4. Snout a little 

 shorter than eye, the diameter of which is 3.25 to 3.50 in the length 



