92 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
Leptocephalus humilis Stromman. Figs. 13, 13a, 136. 
Two specimens 75 and 76 mm. long. New Providence. One 85 mm. long. Albatross station 
2600. One 78 mm. long. Alhcdross station 2596. 
This species agrees closely in most respects with Stromman’ s description. It differs in having 
a series of spots above the alimentary canal. There is a series of three or four chromatophores along 
the edge of the upper jaw half way between its tip and the eye; a chromatophore near the base of the 
pectorals; mid-dorsal line in front of the dorsal fin with a series of widely separated chromatophores; 
dorsal, caudal and anal with a series of chromatophores; a few chromatophores on the caudal rays; a 
series of spots above the spinal cord at its posterior part, these sometimes aggregated into two spots; 
myocommas below the median line, each with a series of from one to four chromatophores except 
near the head. The body is long and slender, tapering from the very slender head to behind the 
alimentary canal; tail pointed; segments 71 + 90; 68 89; 68 + 91; 69 + 93. 
13 
Leptocephalus humilis. 
Leptocephalus gilberti, sp. nov. Fig. 14, 14a, 146. 
Type, one specimen 73 mm. long. Albatross station 2597. 
This species resembles Leptocephalus humilis, morrisii, and caudomaculatus in shape of the head, 
the nostrils, the shape of tail. It differs in number of segments, distribution of spots along alimentary 
canal, and length of rayed dorsal. Body tapering equally to both ends from middle; depth about 12 
times in length; head about half the greatest depth; snout pointed; upper and lower profiles nearly 
equally slanting; dorsal beginning on seventh segment behind pectoral; a chromatophore on margin 
of upper jaw; no other pigment about head; a chromatophore below pectoral, a series of chromato- 
phores along upper margin of alimentary canal, congregated in places to form more or less distinct 
spots; a few chromatophores along ventral margin of alimentary canal; base of anal with a series of 
chromatophores to near caudal; a few chromatophores at base of caudal; none at base of the dorsal; a 
few chromatophores on tip of tail; the usual series of linear spots on myocomma beneath lateral line; 
segments 100 + 80, 
We take pleasure in dedicating this species to Dr. Charles H. Gilbert, in recognition of his 
demonstration of the metamorphosis of the Leptocephalus of Albula vulpes into its adult form. 
