900 rnOCEETHNGS of the national museum. vol. XXVI. 



5. FLUVIDRACO NUDICEPS iSauvage). 

 PifeudobagrHS nudicepsSAVVACxE, Bull. Soc. Pliilomat., J88.'], p. 2; Lake Biwa. 



The original description is as folloAvs: 



D. I, 6; A. 23; P. I, 7. Longueur de la tete contemie cinq foiH dans la longueur 

 totale; dessus de la tete osseux, granuleux; processus occipital plus long que large, 

 etroit; os basilaire triangulaire, aussi long que le processus occipital, partage par une 

 suture transverse. Dorsale plus haute que le corps; (?pine dentelee, aussi longue que 

 la tete, sans le niuseau. Epine pectorale la nieme longueur que I'epine dorsale, de 

 nieine longueur que celle-ci, tres fortement dentelee. Adipeuse de nieme longueur 

 que I'anale. Dents du palais suivant inie })ande retrecieau milieu; Ijarbillons niaxil- 

 laires s'etendant jusqu'aux i)ectorales. Longueur, 0,090. 



This species is near FJnvldraco fulvidraeo (Richardson), of the 

 streams of Canton. It is also near Fluvhlraco ransonnetil^ and ma}' 

 even be the same. There is no evidence that Flwudraco fultudraco 

 occurs in Japan. 



{nudus, naked; crjj^i, head.) 



5. PSEUDOBAGRUS Bleeker. 

 IWndohagrus Bleeker, Act. 8oc. Sci. Indo-Nederl., VII, 1860, p. 87 {aumntiacus). 



Body nioderatel}'^ elongate. Head broad and depressed, covered 

 above by moderately thick, smooth skin; eyes moderate or rather 

 small; snout broad, obtuse; mouth broad, transverse, and with bands 

 of villiform teeth in the jaws; a continuous transverse band of teeth 

 on the roof of the mouth; nostrils remote, the anterior usually in a 

 small tube; 8 barbels, the maxillaries the longest, and the mentals 

 more or less evenly distributed. Dorsal tin short, with 5 to 7 ra3^s, 

 and like the pectoral with a stout spine; caudal rounded or su])truncate; 

 anal with 20 or more radii; ventrals broad, with 6 rays. 



{il'€vd?fg false: BagruKi). 



6. PSEUDOBAGRUS AURANTIACUS (Schlegel). 

 GIGI; GIBACHI. 



Bagrus aurmHiacus Schlegel, Fauna Japoniea, 1840, Y'. 227, pi. civ, fig. 2; Sat- 

 suma, Kuruma, Higo. 



Pseudobagrus nurantiacus Bleeker, Act. Soc. Sci. Indo-Nederl., VII, p. 85. — 

 GiTNTHER, Cat. Fish. Brit. Mus., V, 1S64, p. 85.— Sauvage, Bull. Soc. Philo- 

 mat., 1883, p. 2; Lake Biwa. — Jordan and Snyder, Proc. U. S. Nat. Mus., 

 XXIII, 1900, p. .340; Tokyo; Annot. Zool. Japan, III, April 3, 1901, p. 44.— 

 IsHiKAWA, Prel. Cat., 1897, p. 22; Tokyo, Chichibu, Suwa. Tega Lake. 



Pseiidobagrustokien.ns'DouERhKi^, Fische Japans, IV, 1887, i>. 288; Tokyo. — Jordan 

 and Snyder, Annot. Zool. Japan, II, April 3, 1901, p. 45. 



Head, 5J in length; depth, 7; 1). I, 7; A., 20; P. I., 7; V., 0; eye, 

 4i in interorbital space; width of mouth, 2 in head; pectoral, li in 

 head; ventral, 2. 



Body elongate, with rather uniform depth, the tail strongly com- 

 pressed. Head broad, depressed; snout short, bluntly rounded when 

 viewed from above and i)r()jecting beyond the mandible; the width of 

 the head is le.ss than its length; eyes small, laterally superior, andcov- 



