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Body very slender, head low, subquadrate in cross section, width at frontal margin of orbit about as wide as deep. Snout rather long, terminating in a sharp point anteriorly and projecting beyond mouth for a distance slightly less than 1/2 diameter of orbit. Orbit small, subcircular. Mouth large, lateral, considerably oblique. No barbel. Scales large and thin, exposed area with very small, weak spinules arranged in quincunx order, those on breast, belly, and axillary fossa entirely cycloid. Vent just in front of anal fin and preceded by a long luminous organ. Two external lenses present in constant position, anterior one advanced on mid-ventral line beyond pelvic fin base for a distance slightly less than 1/2 orbital diameter, and posterior one, larger than the former, immediately before vent. |