288 
p. Terminal bulb rounded or ovate, with basal pigment spot; 
filaments on a stalk melanostigma. 
I 
■£* Eerninal bulb elongate, without pigment spot; filaments 
4 
f 
iiot stalked ^ melanonema* 
I — n 
Barbel with 1 bulb. 
1 • 
I 
SL* with branched terminal appendage 
^ patulus. 
Ci 
fl* Bulb with simple terminal appendage 
,£• Bulb without appendage 
long ibarba*, 
simplex. 
Pectoral rays 2. ' ' 
1 
r. Barbel with bulb divided by terminal notch into 2 uneoual 
J. 
lobes, longer tapering* 
1 
JL* Cne bulb with 2 minute filaments; barbel 2/7 to l/z of 
body without caudal 
dubuis. 
s_. Only 1 bulb bearing terminal branched appendages; barbel 
l/2 of fish without caudal schiffi. 
3 -— 
umall bulb basal to main one, bears branched terminal ap¬ 
pendage, with 2 to 4 bulb like bodies on stem; barbel l/z 
to 2/3 body without caudal polvaster. 
Barbel with 2 to 4 separate bulbs, none bilobed. 
Two well separated bulbs, sometimes with 1 or 2 smaller one! 
£ 
between 
irariab.1 lis • 
—* Three bul ' bs » median very near terminal, which larger 
trituberatus. 
Three bulbs, median very near terminal, which smaller 
