tip than adipose fin origin, depressed fin 1° to latter. 
Adipose large, twice size of eye. Anal origin little nearer 
caudal base than first dorsal origin, front rays much larger 
than others, depressed fin 1 4/5 to caudal base. Pectoral 
(to longest or first ray bip) reaches 15 to ventral. Latter 
inserted well behind first dorsal base or about midway between 
front eye edge and caudal base, extends beyond anal origin 
or about opposite adipose fin origin. Color in alcohol: brown 
on back. Silvery-whitish streak from shoulder to caudal base 
medialiy. Under surface of head and body pale or whitish. 
Barbels dull brown. Iris brownish with pale yellow tinge. 
Pins brown, darker terminally and ventral edge narrowly whitish. 
Caudal uniform dull brown. Length 270 mm. Though eithout 
locality this specimen may heve been obtained in Peru?. 
Tachysurus equatorialis Starks. 
Head 3 4/5 to 3 7/8; depth 52 
16; Snout 2 7/8 in head; eye 4 1/5 
to 4; interorbital 2 3/5 to 2 3/4. 
Body moderately elongate, compressed. least depth about 
helf its length or 3 3/5 to 3 4/5 in head. Head width 1 1/3 
to 1 2/5 in its length. Snout moderately wide, convex, length 
2/5 to 2/3 its width. Eye center ebout first 2/5 in head, 
l= to 2 in snout in profile. M llery half way to eye. Jaws 
with broad bands of fine teeth. Narrow medien cutaneous 
fold on vomer. Each palstin with much wider band of rather 
blunt teeth, widely seperated or lateral in mouth. Mexillery 
