373 



a minute spine anteriorly at its base, longest dorsal ray slightly 

 longer. Base of adipose fin longer than that of the dorsal, 

 equal to or shorter than its distance from the latter. Anal 

 rounded, its height about equal to that of the dorsal. Ventrals 

 rounded, reaching to anal, their origin below end of dorsal. 

 Osseous part of pectoral spine flat, furrowed, about equal to 

 head. Caudal deeply emarginate. Caudal peduncle about twice 

 as long as high. Yellowish brown, with dark brown irregular 

 cross-bands, one on the head, one below and behind dorsal, 

 one through adipose fin to anal, the fourth on base of caudal. 

 Fins and barbels variegated with brown. Length 43 mm. 



Nomen indig. : Kekel, ikan belang (Mai. Batav.), Bangon 

 (Sundan.). 



Habitat: Java (Batavia!, Parongkalong). 



In rivers, descending to their mouth. 



Doubtful species. 

 Akysis macronema Blkr. 



Akysis macronema Bleeker, Act. Soc. Sclent. Indo-Neerl. VIII. 1860, Negende 



Bijdr. Sumatra p. n. Atl. Ichth. II. 1862, p. 65. 

 Akysis macronema Giinther, Cat. Brit. Mus. V. 1864, p. 97. 



According to Bleeker this species differs from A. variegatus 

 (Blkr.) in that the height is less, the maxillary barbels are some- 

 what longer, the adipose fin is shorter and its distance from 

 the dorsal twice its length. The dorsal spine wants the minute 

 spine at its base. 



Bleeker's specimens in the Leyden Museum are in too bad 

 a state to allow of a decision on the validity of this species. 



3. Breitensteinia Steindachner. 

 (STEINDACHNER, Sitzb. Akademie Wien LXXXIII. 1881, p. 13). 



Both trunk and tail elongate. The tail becoming hindwards 

 gradually more four sided, by the prominence of the dorsal, 

 ventral and lateral processes of the vertebrae. Head depressed, 

 spatulate, superiorly with prominent blunt longitudinal ridges. 

 Maxillary a little prominent before the terminal curved mouth- 

 opening. Anterior nostril forming a short tubule near the 

 border of the mouth, posterior nostril close to the eye, with 

 a very short tentacle. Eyes very small, looking upwards, covered 



