178 Annals of the Carnegie Museum. 



Habitat: Distributed throughout the island. My specimens are 

 from Jitsugetsutan (Lake Candidius); Tamusui River; Inzanpo; 

 Ritakukan. 



Genus Pseudobagrus Bleeker. 



i860. Pseudobagrus Bleeker, Act. Soc. Indo-Nederl., VII, p. 87. (Type Bagrus 

 aurantiacus Tcmminck & Schlegel). 



Body moderately elongate. Head broad and compressed, covered 



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



small; snout broad, obtuse; mouth broad, tranverse, 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; eight barbels, the maxillaries longest, and the mentals more or 



less evenly distributed. Dorsal fin short, with five to seven rays, and 



like the pectoral with a stout si)ine; caudal rounded or subtruncate; 



anal with twenty or more radii; ventrals broad, with six rays. (Jordan 



& Fowler.) 



Synopsis of the Formosan Species. 



A. Depth of body 6.4,5-7.40 in length; origin of the dorsal in advance of the tip of 



the pectoral. 

 a. Maxillary barbels long, reaching the tip of operculum; adipose dorsal 

 shorter than the anal; anal fin 15-iayed; pectoral I, 7; caudal fin slightly 



emarginate laiivatius. 



aa. Maxillary barbels short, not reaching the tip of operculum; adipose 

 dorsal longer than the anal; anal fin 18-19-rayed; pectoral I, 8-9; caudal 

 fin rounded adiposalis. 



B. Depth of body 4.5-5.33 in length; origin of the dorsal above the tip of the pec- 



toral. 

 a. Maxillary l^arbels long, reaching beyond the tip of operculum; adijsose 

 dorsal longer than the anal; anal fin 15-rayed; pectoral I, 7; caudal fin 

 slightly emarginate brevianalis. 



5. Pseudobagrus brevianalis Regan. 

 Sankakuko (Formosa). 

 1908. Pseudobagrus brevianalis Regan, Ann. Mag. Nat. Hist. (8), \'ol. I, p. 149; 

 Lake Candidius, Formosa. 



Head 4 in length; depth 5.33; D. I, 7; A. 15; P. I, 7; V. 6; width of 

 head 1.33 in its length; eye S.5 in head; snout 2.5; inter-orbital space 

 2.33; pectoral 1.75; ventral 2.28. 



Body elongate, higher in front, posterior part compressed, cross- 

 section of the anterior part triangular; head rather Hat, its top gradu- 

 ally inclining anteriorly; snout broad, obtuseh' rounded anteriorly, 



