NO. 1334. JAPA NESE CYPRINOID FISHES— JORDAN AND FO WLER. 851 



The anal fin also has the developed rays elongated and with adipose 

 expansions. 



{Zako, a Japanese name for river miiuiows, notably for ArJi, lloqna- 

 thus Imiceolata.) 

 a Scales about 43; teeth in inner row 2 — 2; niden with l)r()a(l, dark croHS l>ars. 



pl(tfij]>iift, 28. 

 aa Scales about 52, teeth in inner row mostly 1—1 ; a dark lateral band mo.st distinct 



behind lemminvki, 29. 



aaa Scales about 60; a dark longitudinal stripe most distinct posteriorly. 



b Maxillary not extending to oiijKJsite pu])il, teeth 4, 4, 1 — 1, 4, 4 sieholdi 30. 



28. ZACCO PLATYPUS (Schlegel). 

 HAE (MINNOW); OIKAWA. 



Lenriscus pkUjiptis Schlegel, Fauna .Taponica, Poiss., 1840, p. 207, pi. <i, fig. 1; 

 streams of Nagasaki. 



Opsariichthys plat)/pHS Gui^TSER, Cat. Fish, VII, 1868, p. 296; Japan and For- 

 mosa. — SauvactE, Bull. Soc. Phil., 1883, p. 8; Lake Biwa. — Ishikawa, Zool. 

 Mag., 189.5, p. 121; Hikone, Matsubara on Lake Biwa; Prel. Cat., 1897, 

 p. 11; Tega Lake in Shimosa, Fukiage, Tokyo, Chi R. in JNIusashi, Chichibu, 

 Sawa Lake, Ise, Kishin, Lake Biwa, Zensho, Kyoto, Tsuyama R. 



Boriliunphtit/jms Jordan and Snyder, Proc. V. S. Nat. Mus., XXII, 1900, p. 344, 

 Lake Biwa; Coll. K. Otaki; Check List Fishes of Japan, III, 1901, p. 47; Lake 

 Biwa. 



Lenciscus macrojnis Schlegel, Fauna .lapanica, Poiss., j». 209, pi. ci, fig. 2; 

 Nagasaki. 



Leuciscm minor Schlegel, Fauna Japanica, Poiss, p. 210, pi. ci, fig. 3; Nagasaki. 



Head 4; depth 3i; D. Ill, Y; A. Ill, 9; P. 13; V. 10; scales 43 in 

 the lateral line; 8 scales between the origin of the dorsal and hiterai 

 line, and 5 scales between the latter and middle of bellv; pharyngeal 

 teeth "5, 4, 2 — 2, 4, 4; width of head If in length; snout a little over 

 3 in head; eye 4i; interorbital space 2f; pectoral!; ventral liV. 



Body elongate, compressed. Head moderate, compressed; snout 

 slightly conical, pointed and not projecting; eye rather small, anterior 

 and superior; mouth very ol)Hque; the jaw.^- rather tliin and a])Out 

 equal; maxillary protractile, and not extending to the anterior margin 

 of eye, but a trifle beyond the nostrils; no barbels; pharyngeal teeth 

 without grinding surface, and slightly hooked; nostrils close together 

 on the sides of the snout and nearer the eye than the tip of the former; 

 interorbital space and top of head rather broad and convex. Gill- 

 rakers short and pointed; pseudobranchiie present. Intestine short 

 and with few turns. Peritoneum black. 



Scales rather large, and somewhat narrowly imbricated upon the 

 sides; pectorals with a small, fleshy flap; ventrals with a small, scaly 

 flap. Origin of the dorsal nuich nearer the ti}) of the snout than the 

 base of caudal, when depressed reaching beyond the origin of anal, 

 and the base of the fin a little more than half the head; anal inserted 

 Proc. N. M. vol. xxvi— 02 51 



