176 FISHES FKOM EAST JAVA. 



5. Mastacembelus unicolor K, & v. H. 



Cuvier et Valenciennes, Hist. nat. des Poissons, 



4° Ed., T. VIII, p. 333. 

 Günther, Cat. of Fishes, T. Ill, p. 542. 

 Day, Fishes of India , p. 339 , pi. 72 , fig. 3. 



N° 5205. 6 Ex. Length 111 — 161 uiM. In one of these 

 specimens nearly no trace of the light coloured spots 

 can be observed, in two others most of them are 

 flowing together so as to form a long streak. 

 Mus. mat. N° 1354. 2 Ex. Java. Coll. Kuhl and v. 



Hasselt. Types of the species. 

 One of them (108 mM.) shows 

 some remainders of the spots , 

 the other not at all. 

 N° 5215. 32 Ex. Malay Archipelago. Coll. 

 Bleeker. Length 43—485 mM. 

 Besides the more or less dis- 

 tinctness of the spots and their 

 confluence into streaks, we 

 observe in this series a varia- 

 tion in the coloration of the 

 dorsal and anal fin : in some 

 examples the dark basal streak 

 is interrupted at regular inter- 

 vals by the yellow colour of 

 the margin. 



6. Macrones micracanthus (Blkr.). 



Bleeker, Atlas Ichth., T. II, p. 59, tab. 74, fig. 3. 

 Günther, Cat. of Fishes, T. V, p. 76. 



N° 5206, 1 Ex. Length 106 mM., longest barbel 63 mM. 

 Mus. mat. N° 2947. 1 Ex. Java, Krawang. Coll. 



S. Muller. 

 N° 2948. 1 Ex. Java. Coll. K. and v. H. 

 N° 2963. 1 Ex. Java. Coll. K. and v. H. 



Notes from the Leyden ÜVIuseum, "Vol. X"VI. 



