271 
Bagarius Nieuwenhuisii Popta, Notes Leyden Museum, XXIV. Jan. 1904, 
p- 190 and XXVII. 1906, p. 66. 
Bagarius bagarius Max Weber & de Beaufort, in Maass ,Durch Zentral-Sumatra” 
Bd. II. 1912, Fische p. 16. 
Peer zee. OF ne pe Plt. rey Ve 6. 
Height 5—7. Head 3'/,—3'/,. Eye small, situated in the 
beginning of the posterior half of the head. Maxillary barbels 
' reaching on pectorals or not so far. Dorsal spine nearly equal 
to snout and eye, about as long as the pectoral spine, the 
hindborder of which is strongly denticulated. Greyish or 
yellowish, with large, irregular black bands and markings. All 
the fins with a black base and a black intermarginal band or 
black spots. A nearly uniformly coloured variety has been 
described as B. nieuwenhuisiz. Length more than 2000 mm. 
' Nomen indig.: Kelaling (Javan.), Lika (Sundan., Malay.), 
keto, keto lawang, keto langit (Mahakam). 
Habitat: Java (Parongkalong, Trogon, Surakarta); Sumatra 
(rivers Musi and Kwantan!); Borneo (rivers Mahakam and 
Kapuas). — Burma, Tonkin, British India. 
In rivers, descending to estuaries. 
7. Fam. ARIIDAE. 
Dorsal fin short, with a pungent spine placed anteriorly 
between pectorals and ventrals, which have 6 rays. Adipose 
fin shorter than dorsal, opposite to anal, which has 14—26 
rays. Pectorals lateral, rather low down, with a pungent 
spine. Caudal forked. Head more or less depressed or conical, 
covered by skin or with the headshields conspicuous. Nostrils 
close together, the posterior with a valve but without a barbel. 
Generally maxillary, mandibulary and mental barbels, or only 
the maxillary or only the mandibulary ones are present. Eyes 
sometimes subcutaneous, in most cases with a free orbital 
margin. Mouth wide or narrow, transverse or crescentic, at 
the lower side of the snout, the upper jaw more or less 
prominent. Teeth on palate villiform, conical, granular or 
absent; in the jaws villiform, conical or incisor-like, in one or 
more series, in bands or in patches. Gillmembranes united 
and connected with isthmus. Branchiostegal rays 5—9. 
