1710 
Analysis of species 
# 
1 
a . Four photophores well above lateral line, 1 at 
front end of dorsal fin base, 1 at hind end 
of same (uppermost supraanal), 1 at base of 
adipose fin (superior posterolateral) and 1 
♦ ♦ 
at caudal base (last precaudal). valdiviae. 
a . No photophores above lateral line. 
b 1 . Posterolateral absent; anteroanal in 1 
single continuous group; only 2 precau- 
dals, both on same level; suprapectoral at 
or below pectoral fin base, 
c . Lens of eyes excentric, dorsal; eyes more 
or less approach telescopic; scales cy¬ 
cloid. 
♦ 
1 
d . First 2 supraanals and 2 precaudals sep¬ 
arated from each other by conspicuou¬ 
sly wide interspaces; head 4; anals 
18. parallelum. 
_2 _ 
d . First 2 supraanals and 2 precaudals nor¬ 
mally spaces; head 5 1/3; anals 15 or 
16. 
arcticum. 
