Analysis of species 
. Congermuraena. Tip of caudal black or brown, not 
narrowly white. 
bl. Vertical fins without dark margins; eye 5 l/2 in 
head, 1 l/2 in snout. _j3d.bescens^ 
2 
b . Vertical fins with dark edging. 
c-. Head and trunk 1 l/2 or less in tail. 
d 1 . Eye 4 l/2 to 5 in head, rarely equals snout. 
ju^jd^ralj^, 
d . Eye 6, 1 4/5 in snout. habena ta. 
c2. Head and trunk 1 3/4 in tail. heterognatha. 
. Gongriscus. Tail, including dorsal and anal, 
posteriorly blackish, tip of caudal narrowly 
white, eye 4 l/2 in head, 1 3/4 in snout. 
megastoma. 
