Ce Ophichthyidee. 
My richtnys 
colubrinus (Boddaert). 
Head 20%; depth 43; snout 5 in head; gape 32; interorb- 
ital°6; mandible 2 4/5. Body moderately compressed, sides 
convex. Tail tapers to sharp compressed point. Head aa trunk 
combined 1 1/10 in tail. Head width 33 its length. Snout 
conic, about long as wide. Eye small, 4 in snout. No eyelid. 
Rictus half an eye-diameter beyond eye. Lips entire, wide, 
fieshy. Lower jaw nearly an eye-diameter shorter than upper. 
Teeth molar-like, rather irregularly biserial above and on 
vomer, more regularly biserial in lower jaw. Front of upper 
jaw with slight loop of molar teeth. No tongue. Front nostril 
short fleshy tube before mandibular tip. Hind nostril obli- 
que slit in upper lip below front eye edge. Interorbital convex. 
Gill-opening 1 2/3 in snout. Head and fore part of trunk with 
many longitudinal wrinkles, little wider on pherynx. Dorsal 
origin nearer snout tip than gill-opening by space equal to 
snout, fin elevated at origin. Anal little lower than dorsal. 
Pectoral short, broad, rudimentary, base over twice its length. 
Color in aicohol: generally pale uniform brown. Body with 
