Analysis of Species 
Exnnaute s. Dorsal and anal opposite or nearly so, 
* , —-^ 1* ' *" ■— » 
<«. ■ 
1 . 
branched i^ys 10 to 12 • 
, 1 
^ . No barbel at chin? D, 10 or 11* 
Sr» Only first pectoral ray simple, second and 
following ones branched* 
,1 
JS, . Pectoral with distinct hyaline band; lower 
gill rakers 18.- ——rub esoens . 
2 
^ • Pectoral without distinct hyaline band; 
lower gill inkers 19. 
us 
^ . Pectoral uniformly dark, edges and lowermost 
rays pure white. 
Lower gill rakers 15.—melanocercus* 
e' 
. Lower gill rakers 22. ———— cribrosus. 
■V 
2. . First and second pectoral rays simple, third 
and following ones branched. 
A 
L • Second pectoral ray long as first; 
ventral origin midway between hind eye 
edge and caudal base. 
0.1 
& . Large pale blotch below and subbasally 
on each pectoral —albimaoulatus. 
£ . Pectoral without pale subbasal blotch 
below. 
— rondeletii. 
