bo 
(or) 
bo 
DEEP SEA FISHES. 
Station. Latitude. Longitude. Depth. Temperature, Bottom. 
3402 0° 57’ 30” 8. 89° 3’ 30”. W. 42) fathoms 42.3° F. R. glob. Oz. 
3433) 1252/26) 15/7 Ne 109° 48’ W. 1218“ Btasaie IRA Br. M. bk. Sp. 
3435 26° 48’ N. 110° 45’ 20” W. 859“ 37.3° F. Br. M. bk. Sp. 
34386 27° 34’ N. 110° 53/ 40” W. Cd 37.2° BE. Br. M. bk. Sp. 
3437 About 50 miles S. of Guaymas 628) 40° F. Submarine townet 
“No. 1388”? 32° 17’ N. 135° 49’ W. Surface. [on the bottom. 
Myctophum tenuiculum psp. n. 
Plate J, fig. 5. 
D. 12-11; A. 19; V. 7; P. 138-12; Ll. 39-41; Ltr. 24+ 1+ 4. 
Body compressed, elongate, very slender near the caudal fin, depth three 
thirteenths of the length to the base of the caudal. Head narrow, deep, 
three elevenths of the entire length to the bases of the caudal rays. Snout 
short, half as long as the eye, blunt, prominent and slightly overhanging 
the front of the mouth. Eye, large, twice the length of the snout, less than 
one third of the length of the head, as wide as the interorbital space, one 
half as long as the maxillary. Mouth large ; a vertical from its middle 
passes through the middle of the eye; maxillary extending backward of 
the orbit about half the diameter of the eye. 
The fifth ray of the dorsal is midway from the snout to the base of the 
caudal, and the eighth is above the first ray of the anal fin. The adipose 
dorsal is above the hindmost three rays of the anal. The bases of the ven- 
trals are forward of the dorsal. Pectorals small, reaching backward of the 
bases of the ventrals. Caudal forked, pedicel long, narrow, slender, portion 
between the adipose fin and the bases of the long rays of the caudal equal 
to four fifths of the length of the head. 
Scales large, smooth, those on the lateral line larger. 
A single lantern occupies the middle of the interorbital space; on each 
side there are three lanterns in the branchiostegal series; a minute one 
lies at the angle of the mouth with a larger one just above it behind the 
maxillary; one is situated at the lower edge of the base of the pectoral, 
another close above it forward of the upper ray of the fin and a third a 
short distance below and forward under the opercular edge; none visible 
on the isthmus; five between the isthmus and the ventrals; four between 
the ventrals and the anal; on the flank about one scale-width above these 
last a series of three the foremost of which lies above the base of the 
ventral; a single one above the vent near the lateral line ; eighteen between 
