On new Fishes from Lake Candidius^ Formosa. 359 



eye 5 in the length of head, interorbital width 3. Width of 

 mouth a little less than ^ the width of head ; sheath of lower 

 jaw with rounded anterior edge ; lower lip thick, divided 

 into two lobes by a deep anterior notch ; posterior edge of 

 lower lip narrowly interrupted mediauly ; 4 barbels, the 

 posterior twice as long as the anterior and 1^ as long as the 

 eye. 41 scales in a longitudinal series, 5^ in a transverse 

 series from origin of dorsal fin to lateral line, o between 

 lateral line and base of pelvic fin. Dorsal 11, with 8 branched 

 rays ; origin equidistant from end of snout and base of 

 caudal ; first branched ray the longest, a little longer than 

 the base of the fin. Anal 8, with 5 branched rays. Pectoral 

 § the length of head, not reaching the pelvics, which are 

 inserted below the anterior part of dorsal. Silvery ; back 

 darker ; six dark vertical bars on each side ; membrane of 

 dorsal fin blackish. 



A single specimen, 137 mm. in total length. 



Opsariichthys harhatus. 



Pharyngeal teeth 1.4. 5 — 5 .4.1. Depth of body 3| to 

 4 in the length, length of head 3^ to 3|. Snout longer than 

 eye, the diameter of which is 4;^ to 5^ in the length of heatl ; 

 interorbital width '2\ to 3 in tlie length of head. (Jleft of 

 mouth oblique, extending to below anterior \ of eye ; on each 

 side a short barbel ^t the corner of the mouth ; lower jaw 

 shorter than the upper; a notch in front of the prjeorbital, in 

 advance of which the upper lip is partly covered by the skin 

 of the snout. 52 to 58 scales in a longitudinal series, 12 or 

 13 in a transverse series from origin of dorsal fin to lateral 

 line, 3 or 4 between lateral line and base of pelvic fin. 

 Dorsal 10, with 7 branched rays ; origin above base of 

 pelvics ; longest ray ^ to | the length of head ; free edge a 

 little convex. Anal 12, with 9 or 10 branched rays ; middle 

 rays prolonged in the adult. Pectoral shorter than the head, 

 not reaching the pelvics. Caudal forked. Caudal peduncle 

 If to 1§ as long as deep. A dark lateral stripe expanding 

 on the caudal peduncle ; a vertically elongate blackish spot 

 on each interradial membrane of the dorsal. 



Four specimens, 98 to 160 mm. in total length; all are 

 males with tubercles on the snout and suborbitals. 



Although diifering from other members of the genus in the 

 presence of barbels, tliis species can scarcely be regarded as 

 gcnerically distinct from 0. pachycephalus. 



25* 



