207 
3. Silurodes eugeneiatus (Vaill.). [Fig. 80. p. 205]. 
Callichrous eugeneiatus Vaillant, Bull. Soc. Zool. France XVIII. 1893, p. 61. 
Callichrous eugeneiatus Vaillant, Nouv. Arch. Mus. Hist. Nat. (3) V. 1893. p. 65. 
Silurodes eugeniatus M. Weber & de Beaufort, In: Maass: Durch Zentral-Sumatra, 
TEV ron2.Wische*p: 13. 
Berge, AeA be 6O Paks Tha Vo 7. 
Height 3°/,—4'/,, head 5°/,, eye about 4, somewhat shorter 
than snout, visible from below, situated behind the corner of 
the mouth at a distance of '/, eye-diameter, about twice in 
the convexity of the interorbital space. Upper profile obliquely 
descending from dorsal to snout, nearly straight, with a super- 
ficial concavity before the neck. Maxillary barbel extending 
to the posterior half of anal, mandibulary barbels surpassing 
the caudal. Dorsal with the first ray prolonged, as long as 
distance between corner of mouth and hindborder of head, 
its distance from the end of the snout about 2'/, times in its 
distance from the caudal. Anal slightly connected with the 
base of the caudal, which is deeply forked, its lobes pointed, 
the superior the longer. Ventrals short. Pectorals longer than 
head, the osseous part of the spine equals the head without 
snout and is rather strong. Small villiform teeth in a band on 
the jaws, a few small teeth in one oval patch on the vomer. 
12 gillrakers, the longest a little shorter than the branchial 
filaments. Yellowish, back somewhat darker. A more or less 
dark spot behind the operculum, a smaller one before the 
caudal, both are connected by a dark lateral line. Length 
165 mm. : 
Habitat: Sumatra (Djambi!, Gunung Sahilan!); Borneo 
(Knapei, Sebruang). 
In rivers. 
6. Callichrous Hamilton Buchanan. 
(HAMILTON BucCHANAN. Fishes of the Ganges 1822, p. 149). 
Ompok Lacépéde (diagnosis erronea). 
Compressed, head broad, snout depressed. Cleft of mouth 
oblique, not surpassing the front edge of the eye, lower jaw 
prominent. Eyes covered by skin, their lower border on the 
level of the cleft of the mouth or a little below it. Nostrils 
remote from each other. A maxillary, and some distance be- 
