186 
a. Gape of mouth small; a free orbital margin; 
adipose fin very small; nasal barbel present or 
MOSM oF Oh gb GOO den GO OS!0 Ga Gua O SD Oe Pangasidae p. 246. 
6, Gape of mouth very large; no free orbital mar- 
gin; adipose fin well developed; no nasal barbel. Dozichthyidae p. 333. 
2. Anal short. Adipose fin well developed, only 
totally wanting in Bveztensteinia. 
a. Nostrils close together, separated by a nasal 
barbel. Gillmembranes confluent with isthmus 
(Gye WES C6 oO daa og GOO oo OO OS OO Bagaridae p. 262. 
b. Nostrils close together, separated by a valve 
without nasal barbel. Gillmembranes connected 
Wey SPINS 6 Geo oo to oD oo 6 ooh Oo a 2 Artidae p. 271. 
c. Nostrils remote from each other, the posterior 
with a nasal barbel. 
a. Teeth on the palate. Gillmembranes free 
P(r UNNUS ig. oh uo Ges Guo. Boo oO a.0 Go le Bagridae p. 335. 
@. Palate edentulous; Gillmembranes_ united 
HMM oO 5 5 os Go Oo Bo oc toe Mie eh Akysidae p. 365. 
Note: Pimelodus javus shortly described by CUVIER & 
VALENCIENNES (Hist. nat. des Poissons XV, 1840, p. 187) 
after a specimen said to be from Java, is brought by BLEEKER 
(Atl. “ichth. Il. 1862, -p. 6a), with two “queries; under the 
american genus Rkamdia. He says never to have seen in Java 
a species like it and as according to him, the type in the 
Leyden Museum is lost, it is impossible to make out what 
Pimelodus javus C.V. is. 
There is therefore no reason to believe that the american 
family of the Pimelodidae is represented in the Indo-austra- 
lian Archipelago. 
i. Fam. Clariidae: 
Body elongate. Head much depressed. Its upper and lateral 
parts covered with osseous plates, forming a cask covering a 
diverticulum of the gill-cavity, containing accessory dendritic 
branchial organs attached to the second and fourth branchial 
arches. Cranial roof with an occipital and frontal fontanel, its 
occipital part prolonged in a process. Mouth transverse, ter- 
minal. Four pairs of barbels: nasal, maxillary, mandibulary 
and mental. Anterior nostrils short tubes behind the upper 
lip; posterior nostrils more or less rounded slits behind the 
