2071 
v \\ 
D. Ill, 11, first branched ray 1 1/8 in total head length; adipose 
fin 4 1/4; A. Ill, 16, I, first branched ray 1 3/5; caudal damaged, 
evidently forked; least depth of caudal peduncle 2 3/4; ventral 1 3/5; 
pectoral reaches middle of anal-, length 2 2/5 in combined head and body 
to caudal base. 
Brown, inside mouth and pharynx blackish. Scale pockets and fin 
bases often dark or dusky. Fins pale or whitish. Iris grayish with white 
luminous areas. Opercles blackish* 
Diagnosis . Similar to Lampanyctus macropterus Brauer, but differing 
in the higher supraventral photophore, the fourth pectoral lower than upper 
subpectoral, first or lower posterolateral nearer last anteroanal, 8 
posteroanals and pectoral fin reaching middle of anal fin* 
r 
Type, No. 
U. s. N. M, 
D. 5058. 
Length 115 mm 
For Mr. R. Dale Benson Jr. of Philadelphia, to whom I am indebted 
for many collections of American fishes. 
