136 
One opercular photophore close above level of lover orbital edge. Later¬ 
al series 8, second highest, first next and others subequally low. Ventral 
series 6 on isthmus, then 2 or 3 before pectoral continuous with 9 or 10 to 
ventral, 4 between ventral and anal, 6 above anal and 4 at lower caudal base. 
p redorsal spines 6, gradtiated up to last which 3 l/2 to 4 in total head 
length; D. I, 8, third branched ray 2 to 2 l/4; adipose fin low, length 1 l/q 
to 1 l/2; A. _I, 10, second branched ray 3 l/4 to 3 l/4; caudal 1 l/8; least 
depth of caudal pedxmcle 2 4/5; pectoral 1 l/lO; ventral 3. 
Length 28 mm* (Norman.) 
c! 
North and South Atlantic, Antartic and Indian. Oceans. 
A 
Genus POLYIPNUS G&ither i 
!{ 
Polyipnus GUNTHER, Rep. Voy. Challenger, vol.22, 1887, p.170. Type Polyipnus 
spinosus GUNTHER, monotypic. 
Snout very short, Eye large. Mouth cleft vertical, rather small, bor¬ 
dered above by slender premaxillaries, which followed by posteriorly expanded 
maxillaries. Mandible received within upper j aw. Bands of minute teeth on 
premaxillaries and mandible, in series on maxillary, similar teeth on vomer. 
Preopercular spine strong. Spiny ridges on head and belly. Gill rakers 
rather long. Gill open:' wide, 1 les free from isthmus, delicately united*! 
Branchiostegals 9 to 11. Eody covered with large, extremely thin, deciduous 
scales. Luminous organs before, behind and below eye, op opercle, between 
branchiostegals, in groups along isthmus, ventral edge, between ventral and 
* 
anal, above and behind anal, above and behind pectorals. L orsa ]_ origin 
nearly median. Adipose fin low. Anal begins at last third in’°cdy. Caudal 
Corked. Rectorals long. Ventrals short. 
