140 
BLTJNT-HEA.DET) HALFBEAK. 
to the tail; their membrane at first broader, but narrowing in 
its progress; pectoral fins and tail round. Ventral fins small, 
and very obscure — to be seen only in the larger specimens. 
The colour in different specimens varied greatly — from dark 
with a tint of green, to yellowish green and cream-coloured, 
with specks. 
