N( .. 1334. JAPANESE CYPRINOID FISHES— JORDAN AND FO WLER. 857 



The anterior anal rays are elongate and extend to the ))ase of the 

 caudal. 



The .species, known locally as Hasu, reaches a larger size than an\' 

 other Japanese minnow, except It<kikania uteenackert. Jt is very 

 delicate and finely flavored when boiled, and is nuich appreciated ]»y 

 fhipancse epicures. It is also eaten raw. 



{tCNCK.s^ hook; rostrun/^ snout.) 



19. ISCHIKAUIA Jordan and Snyder. 



Isdiiktmla Jordan and Snyder. Proc. IT. S. Nat. JNIus., 1900, p. 346 {steenackeri) . 



Body elongate, compressed and deep. Head small, compressed, the 

 upper profile nearly straight; snout and eye about equal, the latter 

 about in the middle of the depth of the head; mouth ver}'- oblique, the 

 maxillary protractile and reaching nostril; no barbel; teeth 5, 4,2 — 

 2, 4, 5; interorbital space convex. Gill-rakers short and weak, about 

 4+9. Intestine short. Peritoneum silvery. Scales small, cycloid, 

 about 70. Origin of dorsal midway between tip of snout and base of 

 caudal; first developed ra}^ of dorsal stiffened, spinedike; anal inserted 

 behind tip of depressed dorsal, its base long, of 15 developed rays; 

 caudal deeply eniarginate, the lobes pointed; ventral inserted l)elow 

 origin of dorsal. Lateral line greatly decurved and (concurrent with 

 the lower profile of the body to the caudal. 



Size large, color dusky. 



This genus seems to be allied to the Chinese genus Xen<mjpTl><, dif- 

 fering in the smaller num])ers of the teeth. (Named for Chiyomatsu 

 Ishikawa, director of the Imperial Museum at Tokyo, who first sent 

 us the species from Lake Biwa.) 



32. ISCHIKAUIA STEENACKERI (Sauvage). 

 WADAKA; WATAKO (COTTON-THING); UMANO. 



Opsariichtliys steeiKirkerl Sauvage, Bull. Soc. Philoni. Poii^s., 1883, p. 3; Lake 



Biwa. 

 If^chiknuia stemackeri Jordan and Snvder, Proc. I'. 8. Nat. ]Mus., 1900, ]>. 346, 



pi. x; Lake Biwa. 

 "Genus? species? Wadaka" Ishikawa, Zool. Mag., 1895, p. 129; Otsu, llikone, 

 Nagahama. 

 Head 5; depth 3|; D. Ill, 7; A. Ill, 15; P. 17; V. 9; scales 70 in 

 the lateral line; 12 scales between the origin of the dorsal and the lat- 

 eral line, and 7 between the latter and the middle of the l)elly : pharyn- 

 geal teeth 5, 4, 2—2, 4, 5; width of head If in its length; snout 4 in 

 head; eye 4; interorbital space 2i|; pectoral about 1^; ventral 1^. 



Bodyelongate, compressed and deep. Head small, compi-essed, and 

 the upper profile nearly straight; snout about ecpial to eye, bluntly 

 pointed; eye large, anterior, and nearly in the middle of the depth of 

 the head; "mouth very obli(iue. the jaws nearly ecjual, the maxillary 



