9 
55 
(3%) 
ATOPICHTHYS LYCHNUS. 
higher than wide, forehead very convex transversely. Snout pointed, 
longer than the eye. Eye large, shorter than the snout, near one sixth as 
long as the head. Mouth wide, cleft hardly reaching a vertical through the 
middle of the eye; lower jaw shorter. Teeth short, subconical, visible 
under strong lenses. Nostrils small; posterior nostril as near to the lip 
as to the orbit, nearer to the latter than to the anterior; anterior nostril 
with a short tube, nearer to the end of the snout than to the posterior, 
and nearer to the lip. 
Gill opening small, about half as wide as the eye, in front of the base 
of the pectoral. 
‘Pectorals small, one third as long as the head, twice as long as the eye, 
pointed, of fifteen rays. Vertical fins continuous around the tail. Dorsal 
origin not far from two ninths of the distance from snout to end of caudal. 
Anal origin close to the vent. Vent below the sixty-fifth muscle segment. 
Lateral line in the first half dozen segments descending to the median 
line of the flank. 
Anal fin and hinder portion of dorsal, for the greater part of the length, 
internally marked on the bases of the rays by small spots of black pigment. 
No other pigment on the specimen. 
Total length seven, greatest depth seven-eighths, length of head three- 
eighths, depth of head three-sixteenths, snout to dorsal fin one and nine- 
sixteenths, and snout to vent three and five eighths inches. 
Station, 3354; Lat., 7° 9' 45’ N.; Lon., 80° 50’ W.; Surface townet, Time, Feb. 25, 1891, 15 255 
P. M.; over a depth of 322 fathoms; Temp., 46° F.; Bottom, Gn. M. 
Atopichthys lychnus sp. n. 
Plate LX VII. figs. 3, 3 a. 
Narrowly compressed in the body, greatest depth one nineteenth of the 
total length, moderately pointed in front, acute and slender at the tail, 
deepest behind the middle of the total, tapering gradually forward and 
more rapidly backward. Distance from snout to vent more than half of 
the entire length. Head little wider than the body, higher than wide, in 
length one eighteenth of the total; crown convex longitudinally and very 
convex transversely. Snout compressed, subconical, rounded, blunt, deeper 
than high, little more than one fourth as long as the head. Eye large, as 
long as the snout, one diameter distant from the end of the latter, iris 
