J3X 
- 332 - 
.1 
. Snout little extended; no strongly 
marked ridges on head and 
suborbital ridge not extending to 
preopercle; dorsal spine trenchant 
on front edge, usually serrate,- 
-Coryphaenoides. 
.2 
_J . Snout usually greatly extended; head 
with prominent ridges furnished with 
modified scales and suborbital ridge 
extended to preopercle; dorsal spine 
smooth, rounded anteriorly,--- 
- Coelorhinchus, 
, Branchiostegals 7; gill membranes narrowly 
united, gill opening extended forward 
ventrally; lower gill rakers more than 15; 
scales large, thin, smooth or weakly 
denticulated; ventral regions with fine, 
parallel lines, alternating dark and 
silvery; vent close before anal, midventral 
line with 2 lens like bodies connected by 
black ridge on wall of abdominal cavity, 
one close before vent, other in advance of 
ventrals; tropical fragile species less 
than foot long.-•-Hymemocephalus 
