290 
of which is changing and its size increasing with age, as is also 
the case with the occipital process, which in youth is short and 
nearly triangular. Dorsal profile sloping down in a straight line 
to the broad, bluntly rounded, prominent snout. Eye 71/, (in 
a specimen of 330 mm.) to more than 8 (specimen of 405 mm.), 
with a free orbital margin, about twice in snout, which goes 
about twice in postorbital part of head. Maxillary barbels 
reaching on middle of pectorals or farther, mandibulary barbels 
somewhat farther than base of pectorals, mental ones nearly to 
hindmargin of gillmembrane. Height of dorsal about equal to 
head without snout, the osseous part of its strong spine, which 
has a filamentous prolongation, is granulated at its frontborder, 
scarcely serrated behind and equal to postorbital part of head or 
somewhat longer. The base of adipose fin nearly equal to that 
of the dorsal. About 3 times in its distance from lastnamed, 
situated above the middle of the anal fin, the middle rays of 
which are the highest and about equal to the length of its 
base. Ventrals extending to the origin of anal or on anal. 
Pectorals falciform, somewhat shorter than 
head, their strong spine obtusely serrated 
along both edges, much longer than dorsal 
spine. Axillary pore not very distinct. 
Villiform teeth in a narrow, slightly 
Coe RSs on arcuated band in the jaws; on the palate 
upper jaw and palate 1. in two pairs of posteriorly rounded pat- 
ches; the outer patch is about twice as 
large as the inner one; both are confluent or separated by a 
very narrow interspace. g flattened, stiff gillrakers, the foremost 
the shortest, the longest much less than '/, length of branchial 
filaments and ?/, of eye. Dark bluish brown above, whitish 
below. Base of fins reddish, their distal part more or less 
dark. Length about 450 mm. 
Nomen indig.: Ikan Kedukan (Malay. Batav.), Kropah 
(Batav.), Ikan Babukan (Bagan api api), Ikan Brukan (Banjer- 
massin), Ikan Bilukan (Sarawak). 
Habitat: Java (Batavia!, Antjol!, Bantam, Surabaya!); 
Madura; Sumatra (Palembang, Bagan api api!, Deli!); Singa- 
pore!; Banka; Borneo (Singkawang, Sarawak, Baram-river, 
Balikpapan!, Kota baru!). — Pinang, Malacca, British India. 
In sea, rivers and estuaries. 
