Eyes entirely absent; snout 
and upper part of head covered 
by pair of large transparent 
membrane like bones, each cov¬ 
ering large luminous organ. 
Ipno ps. 
nae. Body well compressed, elong¬ 
ate, slender; head attenuated; dorsal far 
postmedian; anal long. 
h^*. Teeth entire, round, slender, 
some on palatines and in man 
-dible rather enlarged. 
Paralepis. 
2 
h , Teeth triangular, edges uneven 
or jagged and of equal 
length; palatine teeth very 
small in young, absent with_ 
age 
Sudis. 
