2218 
Two antorbital luminous organs, one very small and superior on upper 
eye edge little anterior, other a broad mass along whole front eye edge; 
2 opercular photophores, upper larger and in line with lower eye edge and 
fourth pectoral spot; 3 branchiostegals; 5 pectorals, first interval greatly 
longest, fourth spot elevated level with pectoral fin origin rather close 
behind third pectoral in vertical} 1 suprapectoral slightly nearer pectoral 
fin origin than lateral line; 2 subpectorals, in slightly inclined line 
with first pectoral, first median in position and second or upper close 
v 
before bases of lower pectoral rays in vertical with suprapectoral} 4? 
ventrals, second slightly higher than either fourth pectoral or first 
supraanal; 1 supraventrel, little nearer ventral base them lateral line; 
anals 6 f 4, first and last anteroanals elevated though first little lower 
than median supraanal, posteroanals behind anal fin base; 3 supraanals, in 
nearly straight inclined line passing behind last ventral, median much closer 
to first than to upper or third which close below lateral line; 1 postero¬ 
lateral close below lateral line behind last anteroanal in vertical; 4 
precaudals, first 3 close together and low, fourth much higher posteriorly 
little below end of lateral line. Large luminous scale below suprapectoral* 
D. Ill, 11, first branched ray 1 3/4 in head; adipose fin 33/4; 
A. Ill, 11, first branched ray 2 1/4; caudal 1 1/4, forked; least depth of 
caudal peduncle 2 4/5; pectoral 3; ventral 1 3/4. 
Length 39 mm. (Brauer.) 
Pacific and Indian Oceans. 
Gilbert’s type of Dianhus gjgas is 172 mm. long and seems to vary 
only in minor characters from Brauer’s account and figure. He gives scales 
35 in lateral line and gill rakers 8 f 16. 
