368 
2. Acrochordonichthys rugosus (Blkr.). 
Pimelodus rugosus Bleeker, Verh, Bat. Gen, XXI. I. 1847, Nieuwe bijdr, Siluri, p. 11. 
Acrochordonichthys platycephalus Bleeker, Ichth. Arch. Ind. Prodr. I. Siluri, 1858, 
p. 224. — Atl. Ichth. II. 1862, p. 67. 
Acrochordonichthys rugosus Bleeker, Ichth,. Arch. Ind. Prodr. I. Siluri, 1858, 
p- 227. — Atl. Ichth. II. 1862, p. 68. 
Acrochordonichthys platycephalus Giinther, Cat. Brit. Mus. V. 1864, p. 94. 
Acrochordonichthys rugosus Giinther, Cat. Brit. Mus. V. 1864, p. 95. 
Bu62 sD a: is A. O= 10; Py ae Tos V. 6. 
Height 6'/,—7 in total length, greatest width 4'/,—4*/,. 
Head 4°/, to sligthly more than 5. Dorsal profile from dorsal 
to the blunt rounded snout sloping down in a nearly straight 
line. Nasal barbels slightly longer than eye, maxillary barbels 
reaching to gillopening or not so far, mandibulary barbels to 
base of pectorals and mental barbels much shorter. Occipital 
process rather narrow, triangular, somewhat more than twice 
as long as broad at its base; an oval hollow at its base, 
distinctly separated from the median fontanel. Laterally on 
each side from this hollow a deep groove. Origin of dorsal 
above the middle of the pectorals, its height equal to post- 
orbital part of head, its spine somewhat shorter. Anal nearly 
of equal height, opposite to posterior part of low adipose fin. 
Ventrals rounded, not reaching anal, about equal to postorbital 
part of head. Pectorals slightly shorter than head, their spine 
equal to head from anterior nostril, much longer than the 
dorsal one. Caudal slightly emarginate, as long as head from 
posterior nostril. Least height of caudal peduncle more than 
thrice in its length. Entirely brownish or blackish, with irre- 
gular light spots. Dorsal, anal, ventrals and pectorals with a 
whitish margin. In A. platycephalus 3 round distant yellow 
spots, posteriorly on the sides. Length 110 mm. [Specimens 
of A. rugosus of Bleeker’s collection in Leyden Museum 
examined]. 
Nomen indig.: Djogo-ripo (Javan.). 
Habitat: Java (Buitenzorg!, Surakarta); Sumatra (Palem- 
bang). 
In rivers. 
3. Acrochordonichthys pleurostigma (Blkr.) [Fig. 149, p. 367]. 
Pimelodus pleurostigma Bleeker, Nat. Tijdschr. Ned. Indié, VII. 1854, p. 442. 
Pimelodus zonatus Bleeker, Nat. Tijdschr, Ned. Indié, VII. 1854, p. 444. 
