282 
5. Arius leiotetocephalus Blkr. 
Arius leiotetocephalus Bleeker, Nat. & Geneesk. Arch. Ned. Ind. III (2). 1846, 
p- 292. 
Arius Meyenii Miiller & Troschel, Horae Ichth. III. 1849, p. 9. 
Ariodes leiocephalus Bleeker, Ichth. Arch. Ind. Prodr. I Siluri, 1858, p. 88. — 
Atl. Tchth. (1. 91862, "p. Ao: 
Arius liocephalus Giinther, Cat. Brit. Mus. V. 1864, p. 165. 
BivOy Dot. YAS. Th S17 oe ea on ae ce: 
Elongate, height 4?/,—5'/,, head 31/,—3?/,, broader than 
high, its width about 1'/, in its length, nearly smooth above; 
occipital process granular, smooth in young specimens, ovate, 
1°/, times longer than broad, mesially with a longitudinal 
elevation, touching the short and narrow basal bone of dorsal 
spine. A narrow median fontanel ending before the occipital 
process reaching to the snout. Dorsal profile sloping down to 
the conical rounded, slightly prominent snout. Humeral process 
triangular, smooth. Eye 7 (in a specimen of 315 mm.), with 
a free orbital margin, situated in the middle of the head, 
more than 3 times in the interorbital space. Maxillary barbels 
reaching hindborder of gillmembrane, mandibulary barbels not 
so far, mental ones still shorter. Dorsal fin about as high as 
body, its strong spine granulated anteriorly, posteriorly nearly 
smooth, ?/, or */, of the length of the head. Adipose fin small, 
its base about '/, of that of the soft dorsal and more than 
6 times in its distance from that fin, above the posterior half 
of the anal, the free border of which is concave. 
Ventrals extending to the origin of the anal, '/, 
of length of pectorals, which are about as long 
és i as head without snout, their flattened spine 
serrated on both sides, about as long that of 
the dorsal. Caudal deeply incised, its lobes 
pointed. Teeth in the jaws in a villiform, 
arcuate band, on the palate granular, in 2 small, 
widely separate anterior patches and in two 
long, oval posterior ones, which posteriorly end 
pellan! SALTY GR in two narrow diverging points. 9 stiff, flattened 
leiotetocep halus Blkr, Short gillrakers. Brownish dark above, whitish 
Teeth of upper jaw below. Fins yellowish, dorsal with a dark point. 
eae ee a Length to 470 mm. 
Nomen indig.: Ikan manjong tonggol. 
