NO. 1499. THE HEE RINGS OF JAPAN— JORDAN AND HERRE. 625 



developed; numerous branching mucous canals radiating behind and 

 below e_ye. 



Teeth none. 



Gill-openings large, membranes free from isthmus; gillrakers of 

 first arch ver}- fine and slender, as long as gill filaments, which are 

 coarser and stouter than rakers; all the gill arches with well developed 

 gillrakers; pseudobranchia* numerous, coarse. 



Scales thin, close set, not deciduous, medium size, cycloid; a long, 

 narrow, pointed scale in axil of ventral and pectoral. 



Lateral line not present. 



Distance from tip of snout to ])ase of dorsal a trifle more than from 

 posterior end of dorsal to middle of base of caudal; fin moderately 

 high forward, rapidly decreasing in height till last ray is reached; 

 this is filamentous and greatly elongated, reaching base of caudal; anal 

 fin low, slightly longer than dorsal; caudal of medium size, deepl}' 

 emarginate; pectoral moderate; ventral small, its origin beneath mid- 

 dle of dorsal. 



Color dorsal region brownish olive, with a silvery cast; each scale 

 on back and to middle of sides with a brown spot in middle; a large 

 black blotch on shoulder, opposite or higher than e^-e; sides and belh' 

 yellowish silvery; fins uniform, pale brown or yellowish. 



This description is taken from specimens from Tok^^o. We have 

 others from Nagasaki, and from Matsushima Bay, It is rather com- 

 mon in southern Japan. 



The related species {KonoKrrus tlirlssa Osbeck and lumosirics nasus 

 (Block) = Chatoessus aquosus Richardson) occurs in southern China, 

 but there is no trustworthy record of their existence in Japan. It is 

 not known that Konosh'us punctatus occurs in China. 



{punctatus^ spotted.) 



7. KONOSIRUS NASUS (Bloch). 



DOROKUI (^MUD CARP). 



Clupea nasus Bloch, Ichthyologia, XII, 1797, p. 117, pi. ccccxxix (Tranqnebar). 

 CJiatoessus nnsus Cuviek and Valenciennes, Poiss., XXI, 1848, p. 104 (Pondi- 



cherry, Bombay). — Gunther, Cat., VII, 1868, p. 407 (Cochin, Java, 



Amboyna, Philippines). 

 Dorosoma nasiis Bleeker, Atlas Ichth. Clup., YI, p. 142; pi. cclx, fig. 4 (East 



Indies) . 

 Konosirus nnstis Smith and Pope, Proc. V. 8. Nat. Mus., XXXI, 1906, p. 462 



(Urado near Kochi). 

 Clupanodon nasicus hxcEPEDE, Poiss., V, 1803, p. 472 (After Bloch). 

 Chatoessus altus Gray, Illustr. Ind. Zool., 1835, pi. xci, fig. 2 (India). 

 Chatoessus aquosus RicuARUso's, Ichth. China, 1846 (Canton). 

 Chatoessus come Eichardson, Voy. Erebus and Terror, 1846, p. 62, pi. xxxi. 

 Konosirus thrissa Jordan and Seale, Proc. Davenport Ac. Sci., X, 1905, p. 2 



(Hong Kong; not Clupea thrissa Linnaeus)." 



«The name Clupea thrissa Linnaeus, based primarily on the Clupea triza of Lager- 

 strom and Clupea thrissa of Osbeck, seems to belong to the remaining Chinese species, 

 distinguished by the long anal fin (A. 26 to 28). This should stand as 

 Proc. N. M. vol. xxxi— 06 41 



