The Fresh Water Fishes of the Island of Formosa. 177 



1913. Parasihinis asoliis Jordan, Sn^'der, & Tanaka, Journ. Coll. Sci. Tokyo, 

 XXXIII, p. 58; Japan. 



Head 4.83 in length; depth 6.20; U. 5; A. 75; P. 1.12; V. 11 ; width 

 of head 1.33 in its length; eye 8 in head, 3 in snout, 4 in interorbital 

 space; interorbital space 2 in head; pectoral 1.66; ventral 2.14. 



Body elongate, posterior part compressed, anterior part more or 

 less depressed; tail long and tapering; head flat and broad; snout 

 depressed, broadly rounded anteriorly; lips thin and smooth, lower 

 jaw somewhat protruding; eyes oval, supra-lateral, and anterior; 

 nostrils far apart, distance between anterior and the posterior nostril 

 equal to the distance between the latter and eye, anterior nostril in a 

 short tube; mouth very broad and superior; teeth sharp, in broad 

 villiform bands in the jaws, vomers, and palatines; barbels four, two 

 maxillary, nearly as long as head, two mental, very short, about 4 in 

 head; interorbital space very broad, its middle part somewhat de- 

 pressed; gill-openings large; gill-rakers i + 10, rather short, and 

 widely set; gill-membranes entirely separated. 



Dorsal fin shorter than ventral, distance to pectoral twice as long 

 as the distance to ventral; anal fin very long, united with caudal be- 

 hind, of uniform height, its origin much in advance of the middle of the 

 length; pectoral armed with a short strong spine, both edges of which 



Measurements of Parasilurus asoius. 



Locality. 



Jitsugetsutan. . 

 Tamusui River. 



Inzanpo 



Ritakukan .... 



bear denticulations, inner ones stronger; ventral fins shorter than the 

 pectoral, reaching behind the origin of anal; caudal fin very slightly 

 emarginate, each lobe obtusely rounded; anal papilla present. 



Body smooth, naked; lateral line distinct, extending along the 

 middle of sides, continuous. 



Color in formalin uniformly dark gray, lower surface of head and 

 abdomen whitish. 



Total length 330 mm. 



Described from a specimen from Jitsugetsutan (Lake Candidius), 

 collected by T. Aoki in September, 1916. 

 13 — DEC. 17, 1919. 



