rofo 4 | cr* 
- 
ANALYSIS OF O-SIffiRA 
1 
_a. Scales present; premaxillary free from maxillary 
316 
Stomias. 
1 - 
. Depth 7 l/2 to 13. 
2 
• Depth. 18 Macrostomias. 
a. Ho scales. 
1 
c_. Pectoral arch attached to s5ai.ll by post-temporal bone; parietals present; 
teeth fixed, with long palatine series; dorsal and anal subeoual. 
1 
d_. Postocular organ large; an adipose fin Elapterostomias. 
2 -~- 
d. Postocular organ minute; an adipose fin Chirostomias. 
3 - 
d_. Post ocular very large; no adipose fin Trigonolampa. 
_c. Pectoral arch without post-temporal; parietals present; lower jaw with 
strong Iixed fang anteriorly and 1 depressible tooth behind; second, upper 
tooth long fang; pair of teeth on vomer; 0-2 teeth on each palatine. 
1 ‘ 
_e. Second premaxillary tooth fixed in adult. 
1 
Ho isolated pectoral ray; f . ngs of lower jaw not penetrating premax- 
illurics 'if on mouth closes 
Odontostomias. 
. An isolated and produced pectoral rav. 
MM - - V 
1 
£• Anal origin below dorsal origin -Opostomias* ~ ♦ 
? 2 ^ ~~ m ‘ ‘ ~- - * ' 
Anal origin before dorsal 02 'igin • 3 Flagellostomias. 
2 
J3* oSecond premaxillary tooth denressible. 
1 
£_• An isolated and produced pectoral ray; anal origin before dorsal 
orinn 
Thysanactis** 
2 
hm' Y.e isolated pectoral ray; anal origin nearly below dorsal 
Leptostomias• 
origin 
