Eye ellipsoid, 1 2/3 in snout. No eyelids. Gape large, 
extends about half an eye-diameter beyond eye. Lips rather 
thin, entire. Upper jaw extends sbout 2/5 an eye-diameter 
beyond mandible. Teeth conic, biserial in jaws and on vomer; 
front of upper jaw with double row of 6 slightly larger teeth 
before mandible tip. Front nostril in short broad simple 
tube in upper lip, at mandible tip. Hind nostril slit in 
upper lip betowefront eye edge. Fleshy tongue not free. 
Interorbital level. Gill-opening 1 1/8 in snout. Dorsel 
begins about. over last fifth in pectoral. Anal little lower 
than dorsal. End of tail moderately compressed, slender, 
last dorsal and anal rays slightly elongate. 
Color in alcohol: dull brown. Vertical fins slightly 
darker or more deeper brown marginally. Length 415 mm. No 
with, Sfoertrasans 25 
locality, Rio Janeiro according aot, “onc oes drawing 
in 1858. ey 
We compared an example in the Academy from Colon, 
635 mm. long, not 400 mm. as stated by Fowler .”° It shows 
the nasal tube with a distinct pointed barbel. 
ap Oe errr ee ee ee me nme ee meee « 
2G Proce. £eaee. Tat, 50L. Fetes; LOLs, Ds 
© 
Ophisurus opis Castlienau, is described with rows of 
teeth on the palate. The figure shows the dorsal beginning 
directly behind the pectoral tip, eye large and the nasal 
tube simple or without indication of a barbel. 
