30 



especially in the lateral line and on the back. There may be 

 two black patches at the base of the caudal. Rays of dorsal 

 and caudal with irregular rows of black spots, other fins hyaline. 

 Length nearly 50 mm. 



Nomen indig. : Sereni (Javan.), Serowot, Djeler (Sundan.). 



Habitat: Sumatra (Deli!); Java (Batavia!, Buitenzorg!, 

 Bandongl, lake Situ bagendit!, Tjilankahan, Perdana, Garut, 

 Purworedjo). Tenasserim (British Museum). 



5. Acanthophthalmus Bleeker. 

 (BLEEKER, Nat. Tijdschr. Ned. Indie XVI. 18581859, p. 303). 



(Pangio Blyth). 



Elongate or very elongate, and anguilliform, compressed. 

 Eyes covered by skin, below them an erectile bifid suborbital 

 spine. Head more or less compressed, snout short, bluntly 

 rounded; mouth small, inferior. Six barbels, two rostral ones 

 close together near apex of snout, a pair on the upper jaw, 



Fig. 12. Acanthophthalmus lorentzi n. sp. X 2l /2- Left half of lower surface 

 of anterior part of head enlarged: m mouthopening, u upperlip, / lower lip. 



an other pair on the lower jaw. Scales minute or scarcely visible, 

 wanting on head. Nostrils close together, the anterior tubulate. 

 Dorsal far backwards between ventrals and anal or above anal. 

 Caudal rounded, truncate or slightly emarginate. Gillopenings 

 subvertical, ending near base of pectorals. 



Distribution: Fresh water of indo-australian Archipelago, 

 (Sumatra, Java, Borneo, Singapore); Southern Shan States, 

 Burma, Tenasserim and North east Bengal. 



Artificial key to the indo-australian species. 



I. Height 8 II in total length with caudal. 

 A. Dorsal its own length or more before anal. 



